Polymerizable liquid crystal medium and polymerized liquid crystal film

Abstract

A polymerizable liquid crystal medium and a polymerized liquid crystal film are provided. The present invention relates to optical components exhibiting a reverse or negative light dispersion profile, comprising two or more liquid crystal polymer films, where a first polymer film exhibits a uniform planar alignment of polymerized LC molecules and a second polymer film adjacent to the first polymer film exhibits a cholesteric alignment of polymerized LC molecules with a quarter-pitch rotation across the film thickness of the second polymer film. The present invention also relates to a method for their manufacture. These optical components can be used, for example, to tailor the optical properties of liquid crystal displays (LCDs), improve light utilization efficiency, ensure anti-reflection and visibility in organic light-emitting devices (OLEDs), and for AV / VR applications. Accordingly, the present invention further relates to the use of such optical components for optical, electro-optical, decorative, or security applications, and to corresponding devices.

Description

[Technical Field]

[0001] The present invention relates to optical components exhibiting a reverse or negative light dispersion profile, comprising two or more liquid crystal polymer films, where a first polymer film exhibits a uniform planar alignment of polymerized LC molecules and a second polymer film adjacent to the first polymer film exhibits a cholesteric alignment of polymerized LC molecules with a quarter-pitch rotation across the film thickness of the second polymer film. The present invention also relates to methods for their manufacture. These optical components can be used, for example, to adjust the optical properties of liquid crystal displays (LCDs), improve light utilization efficiency, ensure anti-reflection and visibility in organic light-emitting devices (OLEDs), and for AV / VR applications. Accordingly, the present invention further relates to the use of such optical components for optical, electro-optical, decorative, or security applications, and to corresponding devices. [Background technology]

[0002] OLED displays are made with a metal cathode that is highly reflective and acts like a mirror. It is important that the viewer only sees the light emitted by the OLED and not the light that enters the display being reflected. To achieve this, the display needs an anti-reflective layer or anti-reflective stack.

[0003] Circular polarizers are typically used to optically separate the incident light and eliminate reflected light. A circular polarizer consists of a linear polarizer combined with a quarter-wave plate. The optical retardation of the quarter-wave plate (QWP) should match exactly one-quarter of the wavelength of the incident light to prevent reflected light from leaving the system. Ideally, the QWP should be achromatic, providing equivalent performance across all visible wavelengths. In this regard, ambient contrast ratio (ACR) is an important performance metric for OLED devices that may need to be viewed in bright sunlight.

[0004] Standard quarter-wave plate materials have positive dispersion, meaning that birefringence decreases with increasing wavelength. These positive-dispersion QWP films only provide good anti-reflection performance at a single wavelength (usually 550 nm). High-end QWP films have negative dispersion (ND), meaning that birefringence increases with increasing wavelength. Negative dispersion films typically exhibit quarter-wave retardation over a wider wavelength range than positive dispersion films, resulting in achromatic anti-reflection performance.

[0005] Standard transparent materials have positive optical dispersion, meaning that the refractive index decreases with increasing wavelength. RM films with standard optical dispersion produce QWPs that convert linearly polarized input light into perfectly circularly polarized light for only a single wavelength. All other wavelengths are converted to a non-ideal elliptically polarized state, and some of this light is not absorbed by the polarizer after reflection and is transmitted to the viewer. As a result, the anti-reflection effect is reduced, and the screen may appear purple instead of black.

[0006] To produce a colorless QWP, the retarder must have reverse (also called negative) optical dispersion, meaning that the refractive index increases with increasing wavelength. One way to create a reverse-dispersion QWP is to combine a half-wave plate (HWP) with a positive optical dispersion and a QWP with a positive optical dispersion. These two retarders must be stacked so that the retarders are perpendicular to each other. The problem with this solution is that it increases process costs because two separate films must be coated and then laminated together. Also, the stack cutting process reduces yield.

[0007] Optical films suitable for this purpose are usually based on polymerizable liquid crystal materials that exhibit wavelength-dependent retardation. In this regard, three main types of optical behavior are known: i) "normal" or "positive" light dispersion (as described, for example, in EP 0940707), ii) "reverse" or "negative" light dispersion (as described, for example, in WO 2016 / 020035), and iii) "flat" light dispersion (as described, for example, in WO 2009 / 058396).

[0008] For example, planar or negative dispersion polymerizable liquid crystal materials may contain extraordinary refractive indices (n e ) higher than the ordinary refractive index (n 0 ) can be produced by adding at least one component with a highly conjugated substituent perpendicular to the long axis of the molecule. Therefore, highly conjugated substituents are required at positions perpendicular to the long axis of the molecule. The latter materials absorb some of the UV radiation during the curing of optical films, resulting in a reduced degree of cure and a reduced thermal durability of the cured film. Furthermore, the latter molecular blocks can be easily oxidized at high temperatures in the presence of oxygen. The same applies to highly birefringent formulations containing highly conjugated reactive mesogens, which reduce the heat resistance of the cured film and usually cause yellowing.

[0009] For example, WO 2008 / 119427 ("Patent Document 4") describes a birefringent polymer film with negative optical dispersion, which is obtained from a polymerizable LC medium containing a compound with H-form as a negative dispersion component.

[0010] Suitable materials having a T-shaped geometry and corresponding birefringent polymer films with negative light dispersion are described, for example, in U.S. Patent Application Publication No. 2015175564 ("Patent Document 5"), WO 17079867 ("Patent Document 6"), WO 16104317 ("Patent Document 7"), U.S. Patent Application Publication No. 2015277007 ("Patent Document 8"), or WO 16171041 ("Patent Document 9"), in particular U.S. Patent Application Publication No. 2015175564. (Patent Document 10) compounds represented by formulae 1 to 5; compounds represented by formulae (I-1) to (I-5), (I-8), (I-14), (I-16) to (I-36), (I-41), (I-54) to (I-65), (I-75) to (I-80), (I-82), (I-83), (I-86) to (I-97), and (I-121) to (I-125) of International Publication No. 17 / 079867 (Patent Document 11); compounds represented by formulae (A12-16) to (A12-20) of International Publication No. 16104317 (Patent Document 12); (A18-20), (A14-1) to (A14-3) and (A141-1) to (A143-2), and formulae (2-A) to (2-D), (3-A) to (3-D), (4-A) to (4-D), (5-A) to (5-D), (7-A) to (7-D), (8-A) to (8-D), (9-A) to (9-D), (11-B) to (11-D), (12-b) to (12-D), (13-B) to (13-D), (22-B) to (22-D) in U.S. Patent Application Publication No. 2015 / 0277007 ("Patent Document 8") and compounds represented by formulas (A) to (B), (B) to (C), (B) to (C), (C) to (D), (25-B) to (25-D), (40-A) to (40-D), (41-A) to (41-D), (42-A) to (42-D), (43-A) to (43-D), (44-A) to (44-D), (50-A) to (50-D), (52-A) to (52-D), (54-A) to (54-D), (55-A) to (55-D), or (56-A) to (56-D), and compounds represented by formulas (A) to (E) of International Publication No. 16171041 ("Patent Document 9").

[0011] However, prior art negative dispersion compounds are bulky, typically difficult to align, or difficult to formulate with narrow annealing temperature process windows, making them unsuitable for mass production. Furthermore, the resulting polymer films typically have weaker strength and lower heat resistance. However, a major drawback is that the synthesis costs of T-type and H-type materials are significantly higher than those of standard LC molecules due to the increased number of synthesis steps. A cheaper alternative to common reverse dispersion films could enhance competitiveness in a broader market, particularly for OLED TVs. Ravi K. Komanduri, Kristopher F. Lawler, and Michael J. Escuti (January 14, 2013 / Vol. 10) 21, No. 1 / OPTICS EXPRESS 404) ("Non-Patent Document 1") disclose a multi-twist retarder (MTR), a liquid crystal polymer film containing a chiral additive used to provide ideal optical properties across a wide bandwidth. By using various combinations (1-3 layers) of different chiral layers (RHS, LHS, none), colorless retarders of various efficiencies can be produced. Further approaches taking into account the technical problems defined above are described, for example, in U.S. Patent Application Publication No. 2013-286479 ("Patent Document 13"), U.S. Patent Application Publication No. 2010-225876 ("Patent Document 14"), U.S. Patent Application Publication No. 2010-225856 ("Patent Document 15"), U.S. Patent Application Publication No. 2010-110362 ("Patent Document 16"), U.S. Patent Application Publication No. 2008-158490 ("Patent Document 17"), and U.S. Patent Application Publication No. 2013-286479 ("Patent Document 18"), U.S. Patent Application Publication No. 2010-225876 ("Patent Document 19"), U.S. Patent Application Publication No. 2010-225856 ("Patent Document 20"), U.S. Patent Application Publication No. 2010-110362 ("Patent Document 21"), U.S. Patent Application Publication No. 2008-158490 ("Patent Document 22"), and U.S. Patent Application Publication No. 2010-110362 ("Patent Document 23"), and U.S. Patent Application Publication No. 2010-110362 ("Patent Document 24"), and U.S. Patent Application Publication No. 2010-110362 ("Patent Document 25"), and U.S. Patent Application Publication No. 2010-110362 ("Patent Document 26"), and U No. 6,693,746 ("Patent Document 20"), U.S. Patent Application Publication No. 2003-202137 ("Patent Document 21"), U.S. Patent No. 6,480,251 ("Patent Document 22"), and U.S. Patent No. 6,061,108 ("Patent Document 23").

[0012] In particular, U.S. Pat. No. 9,298,041 ("Patent Document 24") discloses a multi-layer twist retarder device including two or three twist layers configured to provide broadband retardation for a wide field of view by varying the number of layers, the twist angle, and / or the thickness of each layer.

[0013] However, there remains a need for new and preferably improved optical components that do not exhibit, or exhibit to a lesser extent, the drawbacks of prior art materials. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] European Patent No. 0940707 [Patent Document 2] International Publication No. 2016 / 020035 [Patent Document 3] International Publication No. 2009 / 058396 [Patent Document 4] International Publication No. 2008 / 119427 [Patent Document 5] US Patent Publication No. 2015175564 [Patent Document 6] International Publication No. 17079867 [Patent Document 7] International Publication No. 16104317 [Patent Document 8] US Patent Application Publication No. 2015277007 [Patent Document 9] International Publication No. 16171041 [Patent Document 10] US Patent Publication No. 2015175564 [Patent Document 11] International Publication No. 17 / 079867 [Patent Document 12] International Publication No. 16104317 [Patent Document 13] U.S. Patent Application Publication No. 2013-286479 [Patent Document 14] U.S. Patent Application Publication No. 2010-225876 [Patent Document 15] U.S. Patent Application Publication No. 2010-225856 [Patent Document 16] U.S. Patent Application Publication No. 2010-110362 [Patent Document 17] U.S. Patent Application Publication No. 2008-158490 [Patent Document 18] U.S. Patent Application Publication No. 2004-032677 [Patent Document 19] Japanese Patent Application Laid-Open No. 2002-062540 [Patent Document 20] U.S. Patent No. 6,693,746 [Patent Document 21] U.S. Patent Application Publication No. 2003-202137 [Patent Document 22] U.S. Patent No. 6,480,251 [Patent Document 23] U.S. Patent No. 6,061,108 [Patent Document 24] U.S. Patent No. 9,298,041 [Non-patent literature]

[0015] [Non-Patent Document 1] Ravi K. Komanduri, Kristopher F. Lawler and Michael J. Escuti (January 14, 2013 / Volume 10) 21, No. 1 / OPTICS EXPRESS 404) DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0016] Other objects of the present invention will become readily apparent to those skilled in the art from the following detailed description.

[0017] Surprisingly, the inventors of the present invention have found that by using a polymerizable LC medium according to claim 1, one or more, preferably all, of the above requirements can be met, preferably simultaneously. [Means for solving the problem]

[0018] (Summary of the Invention) The present invention relates to an optical component exhibiting a reverse or negative light dispersion profile comprising two or more liquid crystal polymer films, where a first polymer film exhibits a uniform planar alignment of polymerized LC molecules and a second polymer film adjacent to the first polymer film exhibits a cholesteric alignment of the polymerized LC molecules with a quarter-pitch rotation across the film thickness of the second polymer film.

[0019] The present invention further relates to a method for producing the optical components described above and below.

[0020] The invention relates in particular to the use of the optical components described above and below in optical, electronic or electro-optical devices.

[0021] The invention further relates to optical, electronic, or electro-optical components or devices themselves, including the optical components described above and below.

[0022] The devices include, but are not limited to, electro-optical displays such as OLEDs and LCDs, non-linear optical (NLO) devices, optical information storage devices, electronic devices, light-emitting displays, organic photovoltaic (OPV) devices, lighting devices, sensor devices, electrophotographic recording devices, organic memory devices, or devices for AR / VR applications. DETAILED DESCRIPTION OF THE INVENTION

[0023] <Terms and definitions>

[0024] As used herein, the term "polymer" will be understood to mean a molecule that includes a backbone of one or more different types of repeating units (the smallest building blocks of a molecule), and includes well-known terms such as "oligomer," "copolymer," "homopolymer," and the like. Furthermore, the term polymer will be understood to include, in addition to the polymer itself, residues from initiators, catalysts, and other elements incident to the synthesis of such a polymer, where such residues are understood not to be covalently incorporated therein. Furthermore, such residues and other elements are usually removed in post-polymerization purification processes, but are typically mixed or entrained with the polymer, and they generally remain with the polymer when transferred between containers or solvents or dispersion media.

[0025] As used herein, the term "(meth)acrylic polymer" includes polymers obtained from acrylic monomers, polymers obtained from methacrylic monomers, and the corresponding copolymers obtained from mixtures of such monomers.

[0026] The term "polymerization" refers to a chemical process for forming a polymer by linking together multiple polymerizable groups or polymer precursors (polymerizable compounds) containing such polymerizable groups.

[0027] The terms "film" and "layer" include rigid or flexible, self-supporting or free-standing films with mechanical stability, as well as coatings or layers on a supporting substrate or between two substrates.

[0028] The term "liquid crystal or mesogenic compound" refers to a compound containing one or more calamitic (rod- ​​or board / lath-shaped) or discotic (disk-shaped) mesogenic groups. The term "mesogenic group" refers to a group capable of inducing liquid crystal (LC) phase behavior. A compound containing a mesogenic group does not necessarily exhibit an LC phase by itself; it may exhibit LC phase behavior only in a mixture with other compounds, or when the mesogenic compound or material, or a mixture thereof, is polymerized. For simplicity, the term "liquid crystal" will be used below for both mesogenic and LC materials. For a summary of definitions, see C. Tschierske, G. Pelzl, and S. Diele, Angew Chem. 2004, 116, 6340-6368.

[0029] Calamitic mesogenic groups typically comprise a mesogenic core consisting of one or more aromatic or non-aromatic cyclic groups bonded to each other directly or via linking groups, optionally comprising terminal groups attached to the ends of the mesogenic core, and optionally comprising one or more side groups attached to the long chain of the mesogenic core, where these terminal and side groups are typically selected from, for example, carbyl groups, hydrocarbyl groups, polar groups such as halogen groups, nitro groups, hydroxy groups, etc., or polymerizable groups.

[0030] The term "reactive mesogen" (RM) refers to a polymerizable mesogenic or liquid crystal compound.

[0031] Polymerizable compounds with one polymerizable group are also called "monoreactive" compounds, compounds with two polymerizable groups are called "direactive" compounds, compounds with three or more polymerizable groups are called "multireactive" compounds, and compounds with no polymerizable groups are also called "nonreactive or nonpolymerizable" compounds.

[0032] The term "non-mesogenic compound or material" means a compound or material that does not contain a mesogenic group as defined above.

[0033] Visible light is electromagnetic radiation having wavelengths ranging from about 400 nm to about 740 nm. Ultraviolet (UV) light is electromagnetic radiation having wavelengths ranging from about 200 nm to about 450 nm.

[0034] According to the present application, the term "linearly polarized light" refers to light that is at least partially linearly polarized. Preferably, the alignment light is linearly polarized light with a polarization ratio of more than 5:1. The wavelength, intensity, and energy of the linearly polarized light are selected according to the photosensitivity of the photo-alignment material. Typically, the wavelength is in the UV-A, UV-B, UV-C range, or visible range. Preferably, the linearly polarized light includes light with a wavelength of less than 450 nm, more preferably less than 420 nm, while the linearly polarized light preferably includes light with a wavelength longer than 280 nm, preferably longer than 320 nm, more preferably longer than 350 nm.

[0035] Irradiance (E e ) or radiation power is defined as the electromagnetic power (dθ) per unit area (dA) incident on a surface: E e = dθ / dA.

[0036] Radiation exposure or radiation dose (H e ) is the irradiance or radiation output (E e ) is defined as: H e =E e ·t.

[0037] All temperatures are expressed in degrees Celsius, e.g., the melting point of a liquid crystal, T(C,N) or T(C,S), the transition from the smectic (S) phase to the nematic (N) phase, T(S,N), and its clearing point, T(N,I). All temperature differences are expressed in degrees Celsius.

[0038] The term "clearing point" means the temperature at which the transition between the mesophase and the isotropic phase occurs over the maximum temperature range.

[0039] At the molecular level, the birefringence of a liquid crystal depends on the anisotropy of the polarizability (Δα = α ∥ -α ⊥"Polarizability" refers to the ease with which the electron distribution within an atom or molecule can be distorted. Polarizability increases with increasing number of electrons and the diffusion of the electron cloud. Polarizability can be calculated, for example, using the method described in Jap. J. Appl. Phys., Vol. 42, 2003, p. 3463.

[0040] The "optical retardation" of a layer of liquid crystal or birefringent material at a particular wavelength R(λ) (nm) is defined as the product of the birefringence Δn(λ) at that wavelength and the thickness d (nm) of the layer, and is given by the following formula: R(λ)=Δn(λ) d Optical retardation R is the difference in nanometers between the optical path lengths traveled by S- and P-polarized light when passing through a birefringent material. "On-axis" retardation refers to the retardation at normal incidence to the sample surface.

[0041] The term "negative (optical) dispersion" refers to a birefringent or liquid crystal material or layer that exhibits reverse birefringence dispersion, where the magnitude of the birefringence (Δn) increases with increasing wavelength (λ), i.e., |Δn(450)| < |Δn(550)|, or Δn(450) / Δn(550) < 1, where Δn(450) and Δn(550) are the birefringence of the material measured at wavelengths of 450 nm and 550 nm, respectively. On the other hand, "positive (optical) dispersion" refers to a material or layer where |Δn(450)| > |Δn(550)| or Δn(450) / Δn(550) > 1. See, for example, A. Uchiyama and T. Yatabe, "Control of Wavelength Dispersion of Birefringence for Oriented Copolycarbonate Films Containing Positive and Negative Birefringent Units," J. Appl. Phys., Vol. 42, pp. 6941-6945 (2003). "Flat (optical) dispersion" refers to a material or layer where |Δn(450)|>|Δn(550)| or Δn(450) / Δn(550)≈1.

[0042] Because optical retardation at a given wavelength is defined as the product of birefringence and layer thickness [R(λ) = Δn(λ) d] as discussed above, optical dispersion can be expressed either as "birefringence dispersion," given by the ratio Δn(450) / Δn(550), or as "retardation dispersion," given by the ratio R(450) / R(550), where R(450) and R(550) are the retardations of the material measured at wavelengths of 450 nm and 550 nm, respectively. Since the layer thickness d does not change with wavelength, R(450) / R(550) is equal to Δn(450) / Δn(550). Thus, a material or layer with negative or inverse dispersion will have R(450) / R(550)<1 or |R(450)|<|R(550)|, a material or layer with positive or normal dispersion will have R(450) / R(550)>1 or |R(450)|>|R(550)|, and a material or layer with flat dispersion will have R(450) / R(550)≈1 or |R(450)|≈|R(550)|.

[0043] In the present invention, unless otherwise specified, "light dispersion" means retardation dispersion, ie, the ratio R(450) / R(550).

[0044] "High variance" means that the absolute value of the variance deviates significantly from 1, while "low variance" means that the absolute value of the variance deviates slightly from 1. Thus, for example, "high negative variance" means that the variance is significantly less than 1, while "low negative variance" means that the variance is only slightly less than 1.

[0045] The retardation (R(λ)) of a material can be measured using a spectroscopic ellipsometer, such as the J.A. Woollam M2000 spectroscopic ellipsometer. This instrument measures the optical retardation of birefringent samples, such as quartz, in nanometers over a wavelength range typically between 370 nm and 2000 nm. From this data, the dispersion of the material (R(450) / R(550) or Δn(450) / Δn(550)) can be calculated.

[0046] These measurement methods were published by N. Singh at the National Physical Laboratory (London, UK) in October 2006 and are entitled "Spectroscopic Ellipsometry, Part 1: Theory and Fundamentals, Part 2: Examples, Part 3: Measurements." The measurement procedures are described in the "RetMeas (Retardation Measurement) Manual" (2002) and "WVASE Guide" (2002) (Woollam Variable Angle Spectroscopic Ellipsometer) published by JA Woollam (Lincoln, Nebraska, USA). Unless otherwise stated, this method is used to measure the retardation of the materials, films, and devices described in this invention.

[0047] The birefringence Δn is defined as follows:

[0048]

number

[0049]

number

[0050] Average refractive index n av. and the ordinary refractive index n o can be measured using an Abbe refractometer. Δn can be calculated from the above formula.

[0051] The polymerizable LC media according to the invention can be prepared, for example, by doping the medium with a chiral compound having a high twisting power: the pitch p of the induced cholesteric helix is ​​given by the concentration c of the chiral compound and the helical twisting power HTP according to the following equation:

[0052]

number

[0053] The total HTP of chiral compounds with the same configuration (HTP total ) is approximately expressed by the following equation:

[0054]

number

[0055] c in the formula i are the concentrations of each individual chiral compound, and HTP i is the helical twisting power of each individual chiral compound.

[0056] HTP (|HTP) of all chiral compounds in a mixture of different compositions Δ |) can be approximately expressed by the following formula:

number

[0057] c s is the concentration of each chiral compound in the S configuration, HTP s is the helical twisting power of each chiral compound in the S configuration, c r is the concentration of each chiral compound with R configuration, HTP R is the helical twisting power of each chiral compound in the R configuration.

[0058] The term "director" is known in the art and refers to the preferred orientation direction of the long molecular axis (in the case of calamitic compounds) or the short molecular axis (in the case of discotic compounds) of liquid crystal or RM molecules. When such anisotropic molecules are uniaxially aligned, the director is the axis of anisotropy.

[0059] All physical properties are determined according to "Merck Liquid Crystals, Physical Properties of Liquid Crystals", November 1997, Merck, Germany, and are given at a temperature of 20°C unless otherwise explicitly stated. The optical anisotropy (Δn) is determined at a wavelength of 589.3 nm.

[0060] In case of doubt, the definition given in C. Tschierske, G. Pelzl and S. Diele, Angew. Chem. 2004, 116, 6340-6368 shall be followed.

[0061] In a given general formula, unless otherwise stated, the following terms have the following meanings:

[0062] A "carbyl group" refers to a monovalent or polyvalent organic group having at least one carbon atom, which group either contains no additional atoms (e.g., -C≡C-) or optionally contains one or more additional atoms such as N, O, S, P, Si, Se, As, Te, or Ge (e.g., carbonyl, etc.). A "hydrocarbyl group" refers to a carbyl group which further contains one or more H atoms and optionally one or more heteroatoms such as N, O, S, P, Si, Se, As, Te, or Ge.

[0063] The carbyl or hydrocarbyl group may be saturated or unsaturated. Unsaturated groups may be, for example, aryl, alkenyl, or alkynyl groups. Carbyl or hydrocarbyl groups having more than three carbon atoms may be linear, branched, and / or cyclic, and may contain spiro-linked or fused rings.

[0064] Preferred carbyl and hydrocarbyl groups are optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy and alkoxycarbonyloxy having 1 to 40, preferably 1 to 25, particularly preferably 1 to 18 carbon atoms; optionally substituted aryl or aryloxy having 6 to 40, preferably 6 to 25 carbon atoms; or optionally substituted alkylaryl, arylalkyl, alkylaryloxy, arylalkyloxy, arylcarbonyl, aryloxycarbonyl, arylcarbonyloxy and aryloxycarbonyloxy having 6 to 40, preferably 6 to 25 carbon atoms. Further preferred carbyl and hydrocarbyl groups are C1 to C6 40 Alkyl, C2-C 40 Alkenyl, C2-C 40 Alkynyl, C3-C 40 Allyl, C4~C 40 Alkyldienyl, C4-C 40 Polyenyl, C6-C 40 Aryl, C6-C 40 Alkylaryl, C6-C 40 Aryl alkyl, C6-C 40 Alkylaryloxy, C6-C 40 Arylalkyloxy, C2-C 40 Heteroaryl, C4-C 40 Cycloalkyl, C4-C 40 Cycloalkenyl, etc. C1-C 22 Alkyl, C2-C 22 Alkenyl, C2-C 22 Alkynyl, C3-C 22 Allyl, C4~C 22 Alkyldienyl, C6-C 12 Aryl, C6-C 20 Aryl alkyl, and C2-C 20 Heteroaryl is preferred.

[0065] Further preferred carbyl and hydrocarbyl groups are linear, branched or cyclic alkyl groups having 1 to 40, preferably 1 to 25, carbon atoms, more preferably 1 to 12 carbon atoms, which are unsubstituted or mono- or polysubstituted by F, Cl, Br, I or CN, and in which one or more non-adjacent CH groups are each, independently of one another, -C(R x )=C(R x )-, -C≡C-, -N(R x )-, -O-, -S-, -CO-, -CO-O-, -O-CO-, -O-CO-O-.

[0066] In the above, R x preferably represents H, halogen, or a linear, branched, or cyclic alkyl chain having 1 to 25 carbon atoms, wherein, further, one or more non-adjacent carbon atoms may be replaced by -O-, -S-, -CO-, -CO-O-, -O-CO-, or -O-CO-O-, and one or more H atoms may be replaced by fluorine, an optionally substituted aryl or aryloxy group having 6 to 40 carbon atoms, or an optionally substituted heteroaryl or heteroaryloxy group having 2 to 40 carbon atoms.

[0067] Preferred alkyl groups are, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, 2-methylbutyl, n-pentyl, s-pentyl, cyclopentyl, n-hexyl, cyclohexyl, 2-ethylhexyl, n-heptyl, cycloheptyl, n-octyl, cyclooctyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, dodecanyl, trifluoromethyl, perfluoro-n-butyl, 2,2,2-trifluoroethyl, perfluorooctyl, perfluorohexyl, and the like.

[0068] Preferred alkenyl groups are, for example, ethenyl, propenyl, butenyl, pentenyl, cyclopentenyl, hexenyl, cyclohexenyl, heptenyl, cycloheptenyl, octenyl, cyclooctenyl, and the like.

[0069] Preferred alkynyl groups are, for example, ethynyl, propynyl, butynyl, pentynyl, hexynyl, octynyl, and the like.

[0070] Preferred alkoxy groups are, for example, methoxy, ethoxy, 2-methoxyethoxy, n-propoxy, i-propoxy, n-butoxy, i-butoxy, s-butoxy, t-butoxy, 2-methylbutoxy, n-pentoxy, n-hexoxy, n-heptyloxy, n-octyloxy, n-nonyloxy, n-decyloxy, n-undecyloxy, n-dodecyloxy, and the like.

[0071] Preferred amino groups are, for example, dimethylamino, methylamino, methylphenylamino, phenylamino, and the like.

[0072] Aryl and heteroaryl groups can be monocyclic or polycyclic, i.e., they can have one ring (e.g., phenyl) or two or more rings, which can be fused (e.g., naphthyl) or covalently linked (e.g., biphenyl), or can contain a combination of fused and linked rings. Heteroaryl groups contain one or more heteroatoms preferably selected from O, N, S, and Se.

[0073] In particular, monocyclic, bicyclic, or tricyclic aryl groups having 6 to 25 carbon atoms and monocyclic, bicyclic, or tricyclic heteroaryl groups having 2 to 25 carbon atoms are preferred, which optionally contain fused rings and are optionally substituted. Furthermore, 5-, 6-, or 7-membered aryl and heteroaryl groups are preferred, in which one or more CH groups may be replaced by N, S, or O such that the O and / or S atoms are not directly bonded to each other.

[0074] Preferred aryl groups are, for example, phenyl, biphenyl, terphenyl, [1,1':3',1"]terphenyl-2'-yl, naphthyl, anthracene, binaphthyl, phenanthrene, pyrene, dihydropyrene, chrysene, perylene, tetracene, pentacene, benzopyrene, fluorene, indene, indenofluorene, spirobifluorene, and the like.

[0075] Preferred heteroaryl groups are, for example, five-membered rings such as pyrrole, pyrazole, imidazole, 1,2,3-triazole, 1,2,4-triazole, tetrazole, furan, thiophene, selenophene, oxazole, isoxazole, 1,2-thiazole, 1,3-thiazole, 1,2,3-oxadiazole, 1,2,4-oxadiazole. , 1,2,5-oxadiazole, 1,3,4-oxadiazole, 1,2,3-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole, 6-membered rings such as pyridine, pyridazine, pyrimidine, pyrazine, 1,3,5-triazine, 1,2,4-triazine, 1,2,3-triazine, 1,2,4,5-tetrazine, 1,2,3,4-tetrazine, 1,2,3,5-tetrazine, or fused groups such as indole, isoindole, indolizine, indazole, benzimidazole, benzotriazole, purine, naphthimidazole, phenanthrimidazole, pyridoimidazole, pyrazineimidazole, quinoxalineimidazole, benzoxazole, naphth Heteroaryl groups include oxazole, anthroxazole, phenanthroxazole, isoxazole, benzothiazole, benzofuran, isobenzofuran, dibenzofuran, quinoline, isoquinoline, pteridine, benzo-5,6-quinoline, benzo-6,7-quinoline, benzo-7,8-quinoline, benzisoquinoline, acridine, phenothiazine, phenoxazine, benzopyridazine, benzopyrimidine, quinoxaline, phenazine, naphthyridine, azacarbazole, benzocarboline, phenanthridine, phenanthroline, thieno[2,3b]thiophene, thieno[3,2b]thiophene, dithienothiophene, isobenzothiophene, dibenzothiophene, benzothiadiazothiophene, or combinations of these groups. Heteroaryl groups may be substituted with alkyl, alkoxy, thioalkyl, fluorine, fluoroalkyl, or further aryl or heteroaryl groups.

[0076] (Non-aromatic) alicyclic and heterocyclic groups include both saturated rings, i.e., those containing only single bonds, and partially unsaturated rings, i.e., those which may contain multiple bonds. Heterocyclic rings preferably contain one or more heteroatoms selected from Si, O, N, S and Se.

[0077] (Non-aromatic) alicyclic and heterocyclic groups can be monocyclic, i.e., containing only one ring (e.g., cyclohexane), or polycyclic, i.e., containing multiple rings (e.g., decahydronaphthalene or bicyclooctane). Saturated groups are preferred. Furthermore, monocyclic, bicyclic, or tricyclic groups having 3 to 25 carbon atoms are preferred, which groups optionally contain fused rings and are optionally substituted. Furthermore, 5-, 6-, 7-, or 8-membered carbocyclic groups are preferred, wherein, further, one or more carbon atoms may be replaced by Si, and / or one or more CH groups may be replaced by N, and / or one or more non-adjacent CH groups may be replaced by -O- and / or -S-.

[0078] Preferred alicyclic and heterocyclic groups are, for example, 5-membered ring groups such as cyclopentane, tetrahydrofuran, tetrahydrothiofuran, pyrrolidine, 6-membered ring groups such as cyclohexane, silynan, cyclohexene, tetrahydropyran, tetrahydrothiopyran, 1,3-dioxane, 1,3-dithiane, piperidine, 7-membered ring groups such as cycloheptane, and fused groups such as tetrahydronaphthalene, decahydronaphthalene, indane, bicyclo[1.1.1]-pentane-1,3-diyl, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, octahydro-4,7-methanoindan-2,5-diyl.

[0079] The aryl, heteroaryl, (non-aromatic) alicyclic and heterocyclic groups optionally carry one or more substituents, which groups are preferably silyl, sulfo, sulfonyl, formyl, amine, imine, nitrile, mercapto, nitro, halogen, C1-C 12 Alkyl, C6-C 12 Aryl, C1-C 12 It is selected from the group comprising alkoxy, hydroxyl, or a combination of these groups.

[0080] Preferred substituents are, for example, solubility-promoting groups such as alkyl or alkoxy, electron-withdrawing groups such as fluorine, nitro or nitrile, or substituents for increasing the glass transition temperature (Tg) of the polymer, especially bulky groups such as t-butyl or optionally substituted aryl groups.

[0081] Preferred substituents, hereinafter also referred to as "L", are, for example, F, Cl, Br, I, -OH, -CN, -NO2, -NCO, -NCS, -OCN, -SCN, -C(=O)N(R x )2, -C(=O)Y x , -C(=O)R x , -C(=O)OR x , -N(R x )2, where R x has the above meaning, and Y x represents halogen, optionally substituted silyl, optionally substituted aryl or heteroaryl having 4 to 40, preferably 4 to 20, ring atoms, and straight-chain or branched alkyl, alkenyl, alkynyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 25 carbon atoms, wherein one or more H atoms may optionally be replaced by F or Cl.

[0082] "Substituted silyl or aryl" preferably includes halogen, -CN, R y , -OR y , -CO-R y , -CO-OR y , -O-CO-R y or -O-CO-OR y (In the formula, R y means substituted with H, a straight, branched or cyclic alkyl chain having 1 to 12 carbon atoms.

[0083] In the formulas shown above and below, the substituted phenylene ring [ka] In the formula, L is each the same or different and has one of the meanings given above and below and is preferably F, Cl, CN, NO, CH, C, H, C(CH), CH(CH), CH, CH(CH)C, H, OCH, OC, H, COCH, COC, H, COOCH, COOC, H, CF, OCF, OCHF, OC, F or P-Sp-, very preferably F, Cl, CN, CH, C, H, OCH, COCH, OCF or P-Sp-, most preferably F, Cl, CH, OCH, COCH or OCF.

[0084] "Halogen" represents F, Cl, Br or I, preferably F or Cl, more preferably F.

[0085] The "polymerizable group" (P) is preferably selected from groups containing a C=C double bond or a C≡C triple bond and groups suitable for polymerization with ring opening, such as oxetane or epoxide groups.

[0086] Preferably, the polymerizable group (P) is CH2=CW 1 -COO-, CH2=CW 1 -CO-, [ka] CH2=CW 2 -(O) k3 -, CW 1 =CH-CO-(O) k3 -, CW 1 =CH-CO-NH-, CH2=CW 1 -CO-NH-, CH3-CH=CH-O-, (CH2=CH)2CH-OCO-, (CH2=CH-CH2)2CH-OCO-, (CH2=CH)2CH-O-, (CH2=CH-CH2)2N-, (CH2=CH-CH2)2N-CO-, CH2=CW 1 -CO-NH-, CH2=CH-(COO) k1 -Phe-(O) k2 -, CH2=CH-(CO) k1 -Phe-(O) k2-, Phe-CH=CH-, During the ceremony, W 1 represents H, F, Cl, CN, CF3, phenyl or alkyl having 1 to 5 carbon atoms, in particular H, F, Cl or CH3, W 2 represents H or alkyl having 1 to 5 carbon atoms, in particular H, methyl, ethyl or n-propyl, W 3 and W 4 each, independently of one another, denotes H, Cl or alkyl having 1 to 5 carbon atoms, Phe denotes 1,4-phenylene, which is optionally substituted by one or more groups L as defined above, but which are different from P-Sp, preferably preferred substituents L are F, Cl, CN, NO2, CH3, C2H5, OCH3, OC2H5, COCH3, COC2H5, COOCH3, COOC2H5, CF3, OCF3, OCHF2, OC2F5, also phenyl, k1, k2 and k3 each independently represent 0 or 1, k3 preferably represents 1, and k4 is an integer of 1-10.

[0087] Particularly preferred groups P are CH2=CH-COO-, CH2=C(CH3)-COO-, CH2=CF-COO-, CH2=CH-, CH2=CH-O-, (CH2=CH)2CH-OCO-, (CH2=CH)2CH-O-, [ka] where W 2 represents H or alkyl having 1 to 5 carbon atoms, in particular H, methyl, ethyl or n-propyl.

[0088] Further preferred groups (P) are vinyloxy, acrylate, methacrylate, fluoroacrylate, chloroacrylate, oxetane and epoxide, most preferably acrylate or methacrylate, especially acrylate.

[0089] Preferably, all multireactive polymerizable compounds and subformulas thereof contain one or more groups PS Instead of p-, it contains one or more branched groups containing two or more polymerizable groups P (multireactive polymerizable groups).

[0090] Suitable groups of this type, and polymerizable compounds containing them, are described, for example, in US Pat. No. 7,060,200 or US Patent Application Publication No. 2006 / 0172090.

[0091] In particular, the following formula: [ka] Preferred are multi-reactive polymerizable groups selected from During the ceremony, alkyl represents a single bond or a straight or branched alkylene having 1 to 12 carbon atoms, wherein one or more non-adjacent CH groups are each, independently of one another, -C(R x )=C(R x )-, -C≡C-, -N(R x )-, -O-, -S-, -CO-, -CO-O-, -O-CO-, -O-CO-O-, wherein, further, one or more H atoms may be replaced by F, Cl or CN, wherein R x has one of the meanings given above, aa and bb each independently represent 0, 1, 2, 3, 4, 5 or 6; X has one of the meanings given for X', and P v ~P z each, independently of one another, has one of the meanings given above for P.

[0092] Preferred spacer groups Sp are selected from the formula Sp'-X', such that the group "P-Sp-" corresponds to the formula "P-Sp'-X'-", wherein: Sp' represents alkylene having 1 to 20, preferably 1 to 12, carbon atoms, optionally mono- or polysubstituted by F, Cl, Br, I or CN, wherein, in addition, one or more non-adjacent CH groups are each independently -O-, -S-, -NH-, -NR-, so that O and / or S atoms are not directly bonded to each other. xx -, -SiR xx R yy -, -CO-, -COO-, -OCO-, -OCO-O-, -S-CO-, -CO-S-, -NR xx -CO-O-, -O-CO-NR 0xx -, -NR xx -CO-NR yy may be replaced by -, -CH=CH- or -C≡C-; X' is -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, -CO-NR xx -, -NR xx -CO-, -NR xx -CO-NR yy -, -OCH2-, -CH2O-, -SCH2-, -CH2S-, -CF2O-, -OCF2-, -CF2S-, -SCF2-, -CF2CH2-, -CH2CF2-, -CF2CF2-, -CH=N-, -N=CH-, -N=N-, -CH=CR xx -, -CY xx =CY xx represents -, -C≡C-, -CH=CH-COO-, -OCO-CH=CH- or a single bond; R xx and R yy each independently represent H or alkyl having 1 to 12 carbon atoms, and Y xx and Y yy each independently represent H, F, Cl or CN.

[0093] X' is preferably -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, or -CO-NR xx -, -NR xx -CO-, -NR xx -CO-NR yy- or a single bond.

[0094] A typical spacer group Sp' is, for example, -(CH2) p1 -, -(CH2CH2O) q1 -, -CH2CH2-, -CH2CH2-S-CH2CH2-, -CH2CH2-NH-CH2CH2- or -(SiR xx R yy -O) p1 -, where p1 is an integer from 1 to 12, q1 is an integer from 1 to 3, and R xx and R yy has the above meaning.

[0095] Particularly preferred groups -X'-Sp'- are -(CH2) p1 -, -O-(CH2) p1 -, -OCO-(CH2) p1 -, -OCOO-(CH2) p1 -, where p1 is an integer from 1 to 12.

[0096] Particularly preferred groups Sp′ are, for example, linear ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene, undecylene, dodecylene, octadecylene, ethyleneoxyethylene, methyleneoxybutylene, ethylenethioethylene, ethylene-N-methyliminoethylene, 1-methylalkylene, ethenylene, propenylene and butenylene, respectively.

[0097] In the case of the present invention, [ka] represents trans-1,4-cyclohexylene, [ka] represents 1,4-phenylene.

[0098] In the present invention, the groups -COO-, -C(=O)O- or -CO2- are represented by the formula [ka] and the groups -OCO-, -C(=O)O-, -OC- or -OOC- represent an ester group of the formula [ka] represents an ester group of the formula:

[0099] All concentrations are given as weight percent (w / w), all temperatures are given in degrees Celsius, and all temperature differences are given in degrees delta for each total mixture.

[0100] Unless the context clearly indicates otherwise, as used herein plural forms of the terms herein are to be construed as including the singular and vice versa.

[0101] Throughout the description and claims of this specification, the terms "comprise" and "containing" and variations thereof, such as "comprising" and "comprises," mean "including, but not limited to," and are not intended to exclude (or exclude) other elements. On the other hand, the term "comprise" also encompasses, but is not limited to, the term "consisting of."

[0102] Throughout the description and claims of this specification, the terms "obtainable" and "obtained" and variations thereof mean "including, but not limited to," and are not intended to exclude (or exclude) other elements. Meanwhile, the term "obtainable" also encompasses, but is not limited to, the term "obtained."

[0103] <Detailed Description of the Invention> In a preferred embodiment, the one or more liquid crystal polymer films of the optical component are obtainable or obtained from a polymerizable LC medium comprising one or more di- or multi-reactive mesogens, preferably selected from the group of compounds of formula DRM.

[0104] [ka]

[0105] During the ceremony, P 1 and P 2 each independently represents a polymerizable group, Sp 1 and Sp 2 are each independently a spacer group or a single bond, MG is a rod-shaped mesogenic group, which is preferably selected from the formula MG [ka]

[0106] During the ceremony, A 1 and A 2 when present in plurality, independently represent an aromatic or alicyclic group, which optionally contains one or more heteroatoms selected from N, O and S, and which is optionally mono- or polysubstituted by L; L is P-Sp-, F, Cl, Br, I, -CN, -NO2, -NCO, -NCS, -OCN, -SCN, -C(=O)NR x R y , -C(=O)OR x , -C(=O)R x , -NR x R y, -OH, -SF5, optionally substituted silyl, aryl or heteroaryl having 1 to 12, preferably 1 to 6, C atoms, and linear or branched alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 12, preferably 1 to 6, C atoms, in which one or more H atoms are optionally replaced by F or Cl, R x and R y represent, independently of one another, H or alkyl having 1 to 12 C atoms, Z 1 When there are a plurality of groups independently, they are each represented by -O-, -S-, -CO-, -COO-, -OCO-, -S-CO-, -CO-S-, -O-COO-, or -CO-NR 00 -, -NR 00 -CO-, -NR 00 -CO-NR 000 , -NR 00 -CO-O-, -O-CO-NR 00 -, -OCH2-, -CH2O-, -SCH2-, -CH2S-, -CF2O-, -OCF2-, -CF2S-, -SCF2-, -CH2CH2-, -(CH2) n1 , -CF2CH2-, -CH2CF2-, -CF2CF2-, -CH=N-, -N=CH-, -N=N-, -CH=CR 00 -, -CY 1 =CY 2 represents -, -C≡C-, -CH═CH-COO-, -OCO-CH═CH- or a single bond, preferably -COO-, -OCO- or a single bond; Y 1 and Y 2 represent, independently of one another, H, F, Cl or CN, n is 1, 2, 3 or 4, preferably 1 or 2, most preferably 2; n1 is an integer of 1 to 10, and is preferably 1, 2, 3 or 4.

[0107] Preferred Group A 1 and A 2include, but are not limited to, furan, pyrrole, thiophene, oxazole, thiazole, thiadiazole, imidazole, phenylene, cyclohexylene, bicyclooctylene, cyclohexenylene, pyridine, pyrimidine, pyrazine, azulene, indane, fluorene, naphthalene, tetrahydronaphthalene, anthracene, phenanthrene, and dithienothiophene, all of which are unsubstituted or substituted with 1, 2, 3, or 4 groups L as defined above.

[0108] Preferred Group A 1 and A 2 is selected from 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, thiophene-2,5-diyl, naphthalene-2,6-diyl, 1,2,3,4-tetrahydro-naphthalene-2,6-diyl, indan-2,5-diyl, bicyclooctylene or 1,4-cyclohexylene, in which one or two non-adjacent CH groups are optionally replaced by O and / or S, and in which these groups are unsubstituted or substituted by 1, 2, 3 or 4 groups L as defined above.

[0109] Preferred RMs of the formula DRM are selected from the formula RDMa:

[0110] [ka]

[0111] During the ceremony, P 0 are, independently of one another when they occur in plurality, a polymerizable group, preferably an acrylic, methacrylic, oxetane, epoxy, vinyl, heptadiene, vinyloxy, propenyl ether or styrene group, Z 0 are each independently -COO-, -OCO-, -CHCH-, -CFO-, -OCF-, -C≡C-, -CH=CH-, -OCO-CH=CH-, -CH=CH-COO- or a single bond; L may be the same or different in each occurrence and may be L in formula I. 1 and in the case of several occurrences are independently selected from F, Cl, CN or optionally halogenated alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 5 C atoms, r is 0, 1, 2, 3 or 4; x and y are each independently 0 or the same or different integers of 1 to 12, z is 0 or 1, except that it is 0 if the adjacent x or y is 0.

[0112] Highly preferred RMs of formula DRM are selected from the following formulae:

[0113] [ka]

[0114] [ka]

[0115] In the formula, P 0 , L, r, x, y and z are as defined in the formula DRMa.

[0116] Compounds of formula DRMa1, DRMa2 and DRMa3, especially those of formula DRMa1, are particularly preferred.

[0117] The concentration of the di- or multi-reactive RM, preferably of formula DRM and its sub-formulas, in the polymerizable LC medium is preferably 1% to 60%, very preferably 10 to 60%, more preferably 20 to 55%.

[0118] In a preferred embodiment, the polymerizable LC medium comprises one or more monoreactive RMs in addition to a di- or multireactive RM, preferably selected from formula DRM.

[0119] These additional monoreactive RMs are preferably selected from the group of compounds of the formula MRM.

[0120] [ka]

[0121] In the formula, P 1 , Sp 1 and MG has the meaning given in formula DRM, R is F, Cl, Br, I, -CN, -NO2, -NCO, -NCS, -OCN, -SCN, -C(=O)NR x R y , -C(=O)X, -C(=O)OR x , -C(=O)R y , -NR x R y , -OH, -SF5, optionally substituted silyl, linear or branched alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 12, preferably 1 to 6, C atoms, with the proviso that one or more H atoms may be replaced by F or Cl, X is a halogen, preferably F or Cl; R x and R y are each independently H or alkyl having 1 to 12 C atoms.

[0122] Preferably, the RM of formula MRM is selected from the following formulae:

[0123] [ka]

[0124] [ka]

[0125] [ka]

[0126] [ka]

[0127] In the formula, P 0 , L, r, x, y and z are as defined in formula DRMa; R 0 is an alkyl, alkoxy, thioalkyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 or more, preferably 1 to 15, carbon atoms, or Y 0 or P-(CH2) y -(O) z - represents X 0 -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, -CO-NR 01 -, -NR 01 -CO-, -NR 01 -CO-NR 01 -, -OCH2-, -CH2O-, -SCH2-, -CH2S-, -CF2O-, -OCF2-, -CF2S-, -SCF2-, -CF2CH2-, -CH2CF2-, -CF2CF2-, -CH=N-, -N=CH-, -N=N-, -CH=CR 01 -, -CF=CF-, -C≡C-, -CH=CH-COO-, -OCO-CH=CH- or a single bond, Y 0 is F, Cl, CN, NO2, OCH3, OCN, SCN, SF5, or a mono-, oligo- or polyfluorinated alkyl or alkoxy having 1 to 4 carbon atoms; Z 0 is -COO-, -OCO-, -CH2CH2-, -CF2O-, -OCF2-, -CH=CH-, -OCO-CH=CH-, -CH=CH-COO- or a single bond, A 0are, if present in plural, independently 1,4-phenylene or trans-1,4-cyclohexylene which are unsubstituted or substituted by 1, 2, 3 or 4 groups L, R 01、02 are H, R, respectively, independently of each other. 0 or Y 0 and u and v are each independently 0, 1 or 2; w is 0 or 1, However, the benzene ring and the naphthalene ring may be additionally substituted with one or more groups L, which may be the same or different.

[0128] Compounds of formula MRM1, MRM2, MRM3, MRM4, MRM5, MRM6, MRM7, especially those of formula MRM1, MRM4, MRM6 and MRM7 are particularly preferred.

[0129] The concentration of all monoreactive RMs in the polymerizable LC medium is preferably 1-80%, very preferably 5-70%, more preferably 10-60%.

[0130] Compounds of formula DRM, MRM and sub-formulae thereof are known to those skilled in the art and can be prepared analogously to the methods described in standard works of organic chemistry such as, for example, Houben-Weyl, Methoden der Organischen Chemie [Methods of Organic Chemistry], Thieme-Verlag, Stuttgart.

[0131] In a preferred embodiment, the proportion of the polymerizable mesogenic compound in the entire polymerizable liquid crystal medium according to the present invention is in the range of 30 to 99% by weight, more preferably in the range of 40 to 97% by weight, and even more preferably in the range of 50 to 95% by weight.

[0132] Preferably, the proportion of said mono-, di- or polyreactive liquid crystal compounds, preferably selected from compounds of formula DRM, MRM as given above and below, in the overall polymerizable liquid crystal medium according to the present invention is preferably in the range of 30 to 99.9 wt.%, more preferably in the range of 40 to 99.9 wt.%, even more preferably in the range of 50 to 99.9 wt.%.

[0133] In a preferred embodiment, the proportion of the direactive or multireactive polymerizable mesogenic compound in the entire polymerizable liquid crystal medium according to the present invention is preferably in the range of 5 to 99% by weight, more preferably in the range of 10 to 97% by weight, and even more preferably in the range of 15 to 95% by weight.

[0134] In another preferred embodiment, the proportion of the monoreactive polymerizable mesogenic compound in the entire polymerizable liquid crystal medium according to the present invention, if present, is preferably in the range of 5 to 80% by weight, more preferably in the range of 10 to 75% by weight, and even more preferably in the range of 15 to 70% by weight.

[0135] In another preferred embodiment, the proportion of the multireactive polymerizable mesogenic compound in the entire polymerizable liquid crystal medium according to the present invention, if present, is preferably in the range of 1 to 30% by weight, more preferably in the range of 2 to 20% by weight, and even more preferably in the range of 3 to 10% by weight.

[0136] In another preferred embodiment the polymerisable LC medium does not comprise polymerisable mesogenic compounds with more than two polymerisable groups.

[0137] In another preferred embodiment the polymerisable LC medium does not comprise polymerisable mesogenic compounds with less than two polymerisable groups.

[0138] In a further preferred embodiment the polymerisable LC medium comprises one or more monoreactive mesogenic compounds preferably selected of formula MRM-10 and one or more direactive mesogenic compounds preferably selected of formula DRMa-1.

[0139] In a further preferred embodiment the polymerizable LC medium comprises at least two monoreactive mesogenic compounds, preferably selected from compounds of formula MRM-8 and / or MRM-10, and one or more direactive mesogenic compounds, preferably selected from compounds of formula DRMa-1.

[0140] In a further preferred embodiment the polymerizable LC medium comprises at least two monoreactive mesogenic compounds, preferably selected from compounds of formula MRM-8 and / or MRM-10, and at least two direactive mesogenic compounds, preferably selected from compounds of formula DRMa-1.

[0141] In a further preferred embodiment, the polymerisable LC medium comprises at least two direactive mesogenic compounds, preferably compounds selected from compounds of formula DRMa-1.

[0142] Suitable polymerizable liquid crystal media for the production of the second polymer film or the cholesteric polymer film comprise one or more chiral compounds.

[0143] Preferably, the chiral compounds utilized, either alone or in combination with one another, are 20 μm -1 More than 40 μm, preferably -1 More than 60 μm, preferably -1 Within the above range, most preferably 80m -1 More than ~260μm -1 The absolute value of the helical twisting force (HTP) is in the range of

[0144] Preferably, the non-polymerizable chiral compound is selected from the group of compounds of formulae CI to C-III:

[0145] [ka]

[0146] The latter includes each (S,S) enantiomer.

[0147] In the formula, E and F are each independently 1,4-phenylene or trans-1,4-cyclohexylene, v is 0 or 1, and Z 0 is -COO-, -OCO-, -CH2CH2- or a single bond, and R is alkyl, alkoxy or alkanoyl having 1 to 12 C atoms.

[0148] Chiral compounds that do not necessarily exhibit a liquid crystal phase are particularly preferred.

[0149] The compounds of formula C-II and their synthesis are described in WO 98 / 00428. Compound CD-1 shown in Table D below is particularly preferred. The compounds of formula C-III and their synthesis are described in British Patent No. 2,328,207.

[0150] Further typically used chiral compounds are, for example, commercially available R / S-5011, CD-1, R / S-811 and CB-15 (Merck, Darmstadt, Germany).

[0151] The chiral compounds R / S-5011 and CD-1 described above, as well as the (other) compounds of formulae CI, C-II and C-III, exhibit very high helical twisting power (HTP) and are therefore particularly useful for the purposes of the present invention.

[0152] The polymerizable LC medium preferably comprises 1 to 5, in particular 1 to 3, very preferably 1 or 2 chiral compounds preferably selected from the above formula C-II, in particular CD-1, and / or formula C-III and / or R-5011 or S-5011, very preferably the chiral compound is R-5011, S-5011 or CD-1.

[0153] Preferably the polymerisable LC medium comprises one or more non-reactive chiral compounds and / or one or more reactive chiral compounds preferably selected from mono- and / or polyreactive chiral compounds.

[0154] Suitable mesogenically reactive chiral compounds preferably comprise one or more ring structural elements linked together via a direct bond or a linking group, two of which may be linked to each other either directly or via a linking group which may be the same as or different from the aforementioned linking groups. The ring structural elements are preferably selected from the group of 4-, 5-, 6- or 7-membered rings, preferably 5- or 6-membered rings.

[0155] Preferred monoreactive chiral compounds are selected from compounds of formulae CRMa to CRMc.

[0156] [ka]

[0157] During the ceremony, P 0* represents a polymerizable group P, R is alkyl, alkoxy, thioalkyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having one or more, preferably 1 to 15, carbon atoms, or P 0* -(CH2) o -X 2 - and A 0 and B 0 are, independently in the case of several occurrences, 1,4-phenylene which is unsubstituted or substituted by 1, 2, 3 or 4 groups L as defined above, or trans-1,4-cyclohexylene, X 1 and X 2 are each independently -O-, -COO-, -OCO-, -O-CO-O- or a single bond, Z 0* and Z 0when occurring multiple times, are each independently -COO-, -OCO-, -O-CO-O-, -OCH2-, -CHO-, -CF2O-, -OCF2-, -CH2CH2-, -(CH2)4-, -CF2CH2-, -CH2CF2-, -CF2CF2-, -C≡C-, -CH=CH-, -CH=CH-COO-, -OCO-CH=CH- or a single bond; each o is independently 0, 1, 2, or 3; t is 0, 1, or 2; o is 0 or an integer from 1 to 12; a and v are 0, 1 or 2; z is 0 or 1, provided that the naphthalene ring may additionally be substituted with one or more identical or different groups L; Here, L's are each independently F, Cl, CN, a halogenated alkyl having 1 to 5 C atoms, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy.

[0158] The compound of formula CRM is preferably selected from the group of compounds of the following formula:

[0159] [ka]

[0160] In the formula, A 0 , B 0 , Z 0* , P 0* , a and b have the meanings given in formula CRM or one of the preferred meanings given above and below, (OCO) represents -O-CO- or a single bond, X 2 represents -O-, -COO-, -OCO-, -O-CO-O or a single bond.

[0161] Particularly preferred compounds of formula CRM are selected from the group consisting of the following subformulae:

[0162] [ka]

[0163] [ka]

[0164] where R is -X as defined in formula CRM-a 2 -(CH2) x -P 0* wherein the benzene and naphthalene rings are unsubstituted or substituted with one, two, three or four groups L as defined above and below.

[0165] In a further preferred embodiment the polymerizable LC medium optionally comprises one or more further additives selected from the group consisting of further polymerization initiators, antioxidants, surfactants, stabilizers, catalysts, sensitizers, inhibitors, chain transfer agents, co-reactant monomers, reactive thinners, surface-active compounds, lubricants, wetting agents, dispersants, hydrophobizing agents, adhesives, flow improvers, degassing or antifoaming agents, defoamers, diluents, reactive diluents, adjuvants, colorants, dyes, pigments and nanoparticles.

[0166] In another preferred embodiment the polymerizable LC medium optionally comprises one or more additives selected from polymerizable non-mesogenic compounds (reactive thinners). The amount of these additives in the polymerizable LC material is preferably 0-30%, very preferably 0-25%.

[0167] The reactive thinners used are not only substances that are actually called reactive thinners, but also auxiliary compounds as already mentioned above that contain one or more complementary reactive units, such as hydroxyl groups, thiol groups, or amino groups, through which reaction with the polymerized units of the liquid crystalline compound can occur.

[0168] Photopolymerizable substances typically include mono-, di-, and polyfunctional compounds containing at least one olefinic double bond, such as vinyl esters of carboxylic acids, such as lauric acid, myristic acid, palmitic acid, and stearic acid, and vinyl esters of dicarboxylic acids, such as succinic acid, adipic acid, allyl, and vinyl ethers, as well as methacrylic and acrylic esters of monofunctional alcohols, such as lauryl, myristyl, palmitic, and stearyl alcohol, and difunctional alcohols, such as diallyl and divinyl ethers of ethylene glycol and 1,4-butanediol.

[0169] Also suitable are, for example, methacrylic and acrylic esters of polyfunctional alcohols, especially those that do not contain any further functional groups other than hydroxyl groups or contain at most ether groups.Examples of such alcohols are difunctional alcohols, such as ethylene glycol, propylene glycol and their more highly condensed representatives, such as diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, etc., butanediol, pentanediol, hexanediol, neopentyl glycol, alkoxylated phenolic compounds, such as ethoxylated and propoxylated bisphenols, cyclohexanedimethanol, trifunctional and polyfunctional alcohols, such as glycerol, trimethylolpropane, butanetriol, trimethylolethane, pentaerythritol, ditrimethylolpropane, dipentaerythritol, sorbitol, mannitol, and the corresponding alkoxylated, especially ethoxylated and propoxylated alcohols.

[0170] Other suitable reactive thinners are polyester(meth)acrylates, which are (meth)acrylic acid esters of polyesterols.

[0171] Examples of suitable polyesterols are those that can be prepared by esterifying polycarboxylic acids, preferably dicarboxylic acids, with polyols, preferably diols. Starting materials for such hydroxyl-containing polyesters are known to those skilled in the art. Dicarboxylic acids that can be used include succinic acid, glutaric acid, adipic acid, sebacic acid, o-phthalic acid, and their isomers and hydrogenated products, as well as esterifiable and transesterifiable derivatives of the aforementioned acids, such as anhydrides and dialkyl esters. Suitable polyols are the above-mentioned alcohols, preferably ethylene glycol, 1,2- and 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, cyclohexanedimethanol, and polyglycols of the ethylene glycol and propylene glycol type.

[0172] Suitable reactive thinners further include 1,4-divinylbenzene, triallyl cyanurate, the acrylic acid ester of tricyclodecenyl alcohol, also known as dihydrodicyclopentadienyl acrylate, and allyl esters of acrylic acid, methacrylic acid, and cyanoacrylic acid.

[0173] Of the reactive thinners given as examples, those having photopolymerizable groups are used in particular and in view of the preferred compositions mentioned above.

[0174] This group includes, for example, dihydric and polyhydric alcohols such as ethylene glycol, propylene glycol and their more highly condensed representatives, such as diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, etc., butanediol, pentanediol, hexanediol, neopentyl glycol, cyclohexanedimethanol, glycerol, trimethylolpropane, butanetriol, trimethylolethane, pentaerythritol, ditrimethylolpropane, dipentaerythritol, sorbitol, mannitol and the corresponding alkoxylated, especially ethoxylated and propoxylated, alcohols.

[0175] The group also includes, for example, alkoxylated phenolic compounds such as ethoxylated and propoxylated bisphenols.

[0176] These reactive thinners may further be, for example, epoxides or urethane (meth)acrylates.

[0177] Epoxide (meth)acrylates are, for example, those obtainable by reaction of epoxidized olefins or poly- or diglycidyl ethers, such as bisphenol A diglycidyl ether, with (meth)acrylic acid, as known to those skilled in the art.

[0178] Urethane (meth)acrylates are in particular products of the reaction of hydroxyalkyl (meth)acrylates with poly- or diisocyanates, which are likewise known to the person skilled in the art.

[0179] Such epoxides and urethane (meth)acrylates are included among the compounds listed above as "mixed forms."

[0180] When reactive thinners are used, their amount and properties must be adapted to the respective conditions so that, on the one hand, a satisfactory desired effect, for example, the desired color of the composition according to the present invention, is obtained, and, on the other hand, the phase behavior of the liquid crystal composition is not excessively impaired. For example, a low-crosslinking (high-crosslinking) liquid crystal composition can be prepared using a corresponding reactive thinner having a relatively small (large) number of reactive units per molecule.

[0181] Examples of groups of diluents include: C1-C4 alcohols, such as methanol, ethanol, n-propanol, isopropanol, butanol, isobutanol, sec-butanol, in particular C5-C12 alcohols, n-pentanol, n-hexanol, n-heptanol, n-octanol, n-nonanol, n-decanol, n-undecanol and n-dodecanol, and isomers thereof; glycols, such as 1,2-ethylene glycol, 1,2- and 1,3-propylene glycol, 1,2-, 2,3- and 1,4-butylene glycol, di- and triethylene glycol, and di- and tripropylene glycol; ethers, such as methyl tert-butyl ether, 1,2-ethylene glycol mono- and dimethyl ether, 1,2-ethylene glycol mono- and diethyl ether, 3-methoxy- Mention may be made of cyclopropanol, 3-isopropoxypropanol, tetrahydrofuran and dioxane, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and diacetone alcohol (4-hydroxy-4-methyl-2-pentanone), C1-C5-alkyl esters such as methyl acetate, ethyl acetate, propyl acetate, butyl acetate and amyl acetate, aliphatic and aromatic hydrocarbons such as pentane, hexane, heptane, octane, isooctane, petroleum ether, toluene, xylene, ethylbenzene, tetralin, decalin, dimethylnaphthalene, white spirit, Shellsol® and Solvesso® mineral oils such as gasoline, kerosene, diesel and heating oil, and also natural oils such as olive oil, soybean oil, rapeseed oil, linseed oil and sunflower oil.

[0182] Of course, it is also possible to use mixtures of these diluents in the compositions according to the invention.

[0183] These diluents can also be mixed with water, as long as they are at least partially miscible. Examples of suitable diluents herein are C1-C4 alcohols such as methanol, ethanol, n-propanol, isopropanol, butanol, isobutanol and sec-butanol, glycols such as 1,2-ethylene glycol, 1,2- and 1,3-propylene glycol, 1,2-, 2,3- and 1,4-butylene glycol, di- and triethylene glycol, and di- and tripropylene glycol, ethers such as tetrahydrofuran and dioxane, ketones such as acetone, methyl ethyl ketone and diacetone alcohol (4-hydroxy-4-methyl-2-pentanone), and C1-C4 alkyl esters such as methyl, ethyl, propyl and butyl acetate.

[0184] The diluent is optionally used in a proportion of about 0 to 10.0% by weight, preferably about 0 to 5.0% by weight, based on the total weight of the polymerizable LC medium.

[0185] Antifoaming and defoaming agents (c1)), lubricants and flow aids (c2)), heat-curing or radiation-curing aids (c3)), substrate-wetting aids (c4)), wetting and dispersing aids (c5)), hydrophobizing agents (c6)), adhesion promoters (c7)) and aids for promoting scratch resistance (c8)) cannot be strictly distinguished from one another in their action.

[0186] For example, lubricants and flow aids often act as anti-foaming and / or defoaming agents and / or as aids to improve scratch resistance. Radiation curing aids may also act as lubricants and flow aids and / or defoaming agents and / or as substrate wetting aids. In some cases, some of these aids may also function as adhesion promoters (c8)).

[0187] Corresponding to the above, certain additives can therefore be classified into a number of groups c1) to c8) below.

[0188] Antifoaming agents of group c1) include silicon-free and silicon-containing polymers, such as unmodified or modified polydialkylsiloxanes or branched copolymers, comb or block copolymers containing polydialkylsiloxane and polyether units, the latter being derived from ethylene oxide or propylene oxide.

[0189] Degassing agents of group c1) include, for example, organic polymers such as polyethers and polyacrylates, dialkylpolysiloxanes, in particular dimethylpolysiloxanes, organically modified polysiloxanes, such as arylalkyl-modified polysiloxanes, and fluorosilicones.

[0190] The action of antifoaming agents is essentially based on preventing the formation of foam or destroying already formed foam. Antifoaming agents essentially act by promoting the aggregation of finely divided gases or bubbles to produce larger bubbles in the medium to be defoamed, such as the compositions according to the invention, and thus promoting the escape of gas (air). Antifoaming agents can often also be used as defoamers, and vice versa, and these additives are collectively included in group c1).

[0191] Such auxiliaries include, for example, TEGO® Foamex 800, TEGO® Foamex 805N, TEGO® Foamex 810, TEGO® Foamex 815N, TEGO® Foamex 825, TEGO® Foamex 835, TEGO® Foamex 840, TEGO® Foamex 842, TEGO® Foamex 1435, TEGO® Foamex 1488, TEGO® Foamex 1495, TEGO® Foamex 1496, TEGO® Foamex 1497, TEGO® Foamex 1498, TEGO® Foamex 149 ... Foamex 3062, TEGO® Foamex 7447, TEGO® Foamex 8020, TEGO® Foamex 8030, TEGO® Foamex 8050, Tego® Foamex N, TEGO® Foamex K3, TEGO® Antifoam 2-18, TEGO® Antifoam 2-18, TEGO® Antifoam 2-57, TEGO® Antifoam 2-80, TEGO® Antifoam 2-82, T EGO® Antifoam 2-89, TEGO® Antifoam 2-92, TEGO® Antifoam 14, TEGO® Antifoam 28, TEGO® Antifoam 81, TEGO® Antifoam D90, TEGO® Antifoam 93, TEGO® Antifoam 200, TEGO® Antifoam 201, TEGO® Antifoam 202, TEGO® Antifoam 793, TEGO® ) Antifoam 1488, TEGO® Antifoam 3062, TEGOPREN® 5803, TEGOPREN® 5852, TEGOPREN® 5863, TEGOPREN® 7008, TEGO® Antifoam 1-60, TEGO® Antifoam 1-62, TEGO® Antifoam 1-85, TEGO® Antifoam 2-67, TEGO® Antifoam WM20, TEGO® Antifoam 50,TEGO® Antifoam 105, TEGO® Antifoam 730, TEGO® Antifoam MR 1015, TEGO® Antifoam MR 1016, TEGO® Antifoam 1435, TEGO® Antifoam N, TEGO® Antifoam KS6, TEGO® Antifoam KS10, TEGO® Antifoam KS53, TEGO® Antifoam KS95, TEGO® Antifoam KS1 00, TEGO® Antifoam KE600, TEGO® Antifoam KS911, TEGO® Antifoam MR1000, TEGO® Antifoam KS1100, Tego® Airex 900, Tego® Airex 910, Tego® Airex 920, Tego® Airex 931, Tego® Airex 935, Tego® Airex 936, Tego® Airex 944, Tego® Airex 9 60, Tego® Airex 962, Tego® Airex 970, Tego® Airex 978, Tego® Airex 980 and Tego® Airex 985, Tego® Airex 990 from Tego, and are also commercially available from Tego as BYK®-011, BYK®-019, BYK®-020, BYK®-021, BYK®-022, BYK®-023, BYK®-024, BYK®-025, BY K(R)-027, BYK(R)-031, BYK(R)-032, BYK(R)-033, BYK(R)-034, BYK(R)-035, BYK(R)-036, BYK(R)-037, BYK(R)-045, BYK(R)-051, BYK(R)-052, BYK(R)-053, BYK(R)-055, BYK(R)-057, BYK(R)-065, BYK(R)-066, BYK(R)-070, BYK(R)-080,They are commercially available from BYK as BYK®-088, BYK®-141 and BYK®-A530.

[0192] The auxiliaries of group c1) are optionally used in a proportion of about 0 to 3.0% by weight, preferably about 0 to 2.0% by weight, based on the total weight of the polymerizable LC medium.

[0193] In group c2), lubricants and flow aids generally include not only silicon-free polymers, but also silicon-containing polymers, such as polyacrylates or modifiers, low molecular weight polydialkylsiloxanes.Modification consists in some alkyl groups being replaced by a wide variety of organic groups.These organic groups are, for example, polyethers, polyesters, or even longer-chain alkyl groups, the former being most frequently used.

[0194] The polyether groups in the corresponding modified polysiloxanes are usually composed of ethylene oxide and / or propylene oxide units. Generally, the higher the proportion of these alkylene oxide units in the modified polysiloxane, the more hydrophilic the resulting product.

[0195] Such auxiliaries include, for example, TEGO® Glide 100, TEGO® Glide ZG400, TEGO® Glide 406, TEGO® Glide 410, TEGO® Glide 411, TEGO® Glide 415, TEGO® Glide 420, TEGO® Glide 432, TEGO® Glide 435, TEGO® Glide 440, TEGO® Glide 450, TEGO® Glide 460, TEGO® Glide 470, TEGO® Glide 480, TEGO® Glide 490, TEGO® Glide 500, TEGO® Glide 510, TEGO® Glide 520, TEGO® Glide 532, TEGO® Glide 535, TEGO® Glide 540, TEGO® Glide 550, TEGO® Glide 560, TEGO® Glide 570, TEGO® Glide 580, TEGO® Glide 590, TEGO® Glide 591, TEGO® Glide 592, TEGO® Glide 593, TEGO® Glide 594, TEGO® Glide 595, TEGO® Glide 596, TEGO® Glide 597, TEGO® Glide 598, TEGO® Glide 59 ... e466, TEGO® Glide 490, TEGO® Glide 496, TEGO® Glide A116, TEGO® Glide A115, TEGO® Glide B1484 (which may also be used as an antifoam and defoamer), TEGO® Flow ATF2, TEGO® Flow 300, TEGO® Flow 460N, TEGO® Flow 425, and TEGO® Flow ZFS460 from Tego. Suitable radiation curable lubricants and flow aids that may also be used to improve scratch resistance are the TEGO® Rad2100, TEGO® Rad2200, TEGO® Rad2200N, TEGO® Rad2500, TEGO® Rad2600, TEGO® Rad2600N and TEGO® Rad2700 products, also available from TEGO.

[0196] Such auxiliaries are also available from BYK as, for example, BYK®-300, BYK®-306, BYK®-307, BYK®-310, BYK®-320, BYK®-333, BYK®-341, Byk® 354, Byk® 361, Byk® 361N, BYK® 388.

[0197] For example, such an auxiliary is also available from 3M as FC4430®.

[0198] For example, such agents are also available from Cytonix as FluorN® 561 or FluorN® 562.

[0199] For example, such agents are also available from Merck as Tivida® FL2300 and Tivida® FL2500.

[0200] The auxiliaries of group c2) are optionally used in a proportion of about 0 to 3.0% by weight, preferably about 0 to 2.0% by weight, based on the total weight of the polymerizable LC medium.

[0201] In group c3), radiation curing coagents include, in particular, polysiloxanes having terminal double bonds, such as acrylate group components. Such coagents can be crosslinked by actinic radiation or, for example, electron beams. These coagents generally combine many properties. In the uncrosslinked state, they can act as antifoaming agents, defoaming agents, lubricants, and flow aids and / or substrate wetting aids, while in the crosslinked state, they improve, in particular, the scratch resistance of coatings or films produced using the compositions according to the invention. For example, the improvement in the gloss properties of these coatings or films is essentially attributed to the action of these coagents as antifoaming agents, defoaming agents, and / or lubricants, and flow aids (in the uncrosslinked state).

[0202] Examples of suitable radiation curing coagents are the products TEGO® Rad2100, TEGO® Rad2200, TEGO® Rad2500, TEGO® Rad2650 and TEGO® Rad2700 available from TEGO and the product BYK®-371 available from BYK.

[0203] The thermosetting coagents of group c3) contain, for example, primary OH groups which are capable of reacting with, for example, isocyanate groups of the binder.

[0204] Examples of heat-curing coagents that can be used are the products BYK®-370, BYK®-373 and BYK®-375 available from BYK.

[0205] The auxiliaries of group c3) are optionally used in a proportion of about 0 to 5.0% by weight, preferably about 0 to 3.0% by weight, based on the total weight of the polymerizable LC medium.

[0206] The substrate wetting aids of group c4) serve in particular to increase the wetting of the substrate to be printed or coated, for example with a printing ink or coating composition, such as a composition according to the invention. The improved lubrication and flow behavior of such printing inks or coating compositions is often accompanied by an effect on the appearance of the finished (e.g. crosslinked) print or coating.

[0207] A wide variety of such auxiliaries are commercially available, for example, from Tego as TEGO® WetKL245, TEGO® Wet250, TEGO® Wet260, TEGO® Wet500, TEGO® Wet505, TEGO® Wet510, and from BYK as BYK®-306, BYK®-307, BYK®-310, BYK®-333, BYK®-344, BYK®-345, BYK®-346, and BYK®-348.

[0208] The auxiliary agents of group c4) are optionally used in a proportion of about 0 to 3.0% by weight, preferably about 0 to 1.5% by weight, based on the total weight of the liquid crystal composition.

[0209] The wetting and dispersing auxiliaries of group c5) serve in particular to prevent the pigment from becoming waterlogged, floating or settling and are therefore particularly suitable for the pigment composition according to the invention, if required.

[0210] These adjuvants essentially stabilize the pigment dispersions by electrostatic repulsion and / or steric hindrance of the pigment particles containing these additives, although in the latter case the interaction of the adjuvant with the surrounding medium (e.g. the binder) plays a major role.

[0211] The use of such wetting and dispersing auxiliaries is common practice, for example, in the art of printing inks and paints, so that the use of suitable auxiliaries of this type generally presents no problems for the skilled person.

[0212] Such wetting and dispersing aids are commercially available, for example, from Tego as TEGO® Dispers 630, TEGO® Dispers 705, TEGO® Dispers 710, TEGO® Dispers 740W, and from BYK as Disperbyk®, Disperbyk®-107, Disperbyk®-108, Disperbyk®-110, Disperbyk®-111, Disperbyk®-115, Disperbyk®-130, Disperbyk®-160, Disperbyk®-161, Disperbyk®-162, Disperbyk®-163, Disperbyk®-164, Disperbyk®-165, Disperbyk®-166, Disperbyk®-167, Disperbyk®-168, Disperbyk®-169, Disperbyk®-200, Disperbyk®-201, Disperbyk®-202, Disperbyk®-203, Disperbyk®-204, Disperbyk®-205, Disperbyk®-206, Disperbyk®-207, Disperbyk®-208, Disperbyk®-210, Disperbyk®-211, Disperbyk®-212, Disperbyk®-213, Disperbyk®-214, Disperbyk®-215, Disperbyk®-216, Disperbyk®-217, Disperbyk®-218, Disperbyk®-219, Disperbyk®-220, Disperbyk®-221, Disperbyk®-222, Disperbyk®-223, Disperbyk®-224, Disperbyk®-225, Disperbyk®-226, Disperbyk®-227, Disperbyk Disperbyk®-170, Disperbyk®-174, Disperbyk®-180, Disperbyk®-181, Disperbyk®-182, Disperbyk®-183, Disperbyk®-184, Disperbyk®-185, Disperbyk®-190, Anti-Terra®-U, Anti-Terra®-U80, It is commercially available as Anti-Terra®-P, Anti-Terra®-203, Anti-Terra®-204, Anti-Terra®-206, BYK®-151, BYK®-154, BYK®-155, BYK®-P104S, BYK®-P105, Lactimon®, Lactimon®-WS, and Bykumen®.

[0213] The amount of auxiliary used in group c5) is based on the average molecular weight of the auxiliary. Therefore, preliminary experiments are advisable in each case, but this can be easily carried out by a person skilled in the art.

[0214] The hydrophobizing agents of group c6) can be used, for example, to impart water repellency to prints or coatings produced using the compositions according to the invention. This prevents or at least significantly reduces swelling due to water absorption and thus, for example, changes in the optical properties of such prints or coatings. Also, when the compositions are used, for example, as printing inks for offset printing, water absorption can be prevented or at least significantly reduced.

[0215] Such hydrophobizing agents are available, for example, from Tego, including Tego® PhobeWF, Tego® Phobe1000, Tego® Phobe1000S, Tego® Phobe1010, Tego® Phobe1030, Tego® Phobe1010, Tego® Phobe1010, Tego® Phobe1030, Tego® Phobe1040, Tego® Phobe1 050, Tego® Phobe 1200, Tego® Phobe 1300, Tego® Phobe 1310, Tego® Phobe 1409, Tego® Phobe 1500N, Tego® Phobe 1650, Tego® Phobe 1659, Tego® Phobe 6010, Tego® Phobe 6510, and Tego® Phobe 1400.

[0216] The auxiliaries of group c6) are optionally used in a proportion of about 0 to 5.0% by weight, preferably about 0 to 3.0% by weight, based on the total weight of the polymerizable LC medium.

[0217] Further adhesion promoters from group c7) serve to improve the adhesion of two interfaces in contact. From this it follows immediately that the only effective part of the adhesion promoter is that which is located at either one or both interfaces. For example, if it is desired to apply a liquid or pasty printing ink, coating composition or paint to a solid substrate, this generally means that either the adhesion promoter must be added directly to the latter or the substrate must be pretreated with the adhesion promoter (also known as priming), i.e., the substrate is endowed with modified chemical and / or physical surface properties.

[0218] If the substrate has been previously primed with a primer, this means that the contacting interfaces are those of the primer on the one hand and the printing ink or coating composition or paint on the other hand, and in this case not only the adhesion between the substrate and the primer but also the adhesion between the substrate and the printing ink or coating composition or paint contributes to the adhesion of the entire multilayer structure on the substrate.

[0219] Adhesion promoters which may be described in a broader sense are also the substrate wetting aids already mentioned in group c4), but these generally do not have the same adhesion-promoting capabilities.

[0220] The variety of adhesion promoter systems is not surprising in view of the wide variety of substrates and the physical and chemical properties of, for example, printing inks, coating compositions and paints intended for printing or coating them.

[0221] Examples of silane-based adhesion promoters include 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropylmethyldiethoxysilane, N-aminoethyl-3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropylmethyldimethoxysilane, N-methyl-3-aminopropyltrimethoxysilane, 3-ureidopropyltriethoxysilane, 3-methacryloyloxypropyltrimethoxysilane, 3-glycidyloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-chloropropyltrimethoxysilane, and vinyltrimethoxysilane. These and other silanes are commercially available, for example, from Huels under the trade name DYNASILAN®.

[0222] Corresponding technical information from the manufacturers of such additives should generally be used, or a person skilled in the art can obtain this information in a simple manner through corresponding preliminary experiments.

[0223] However, if these additives are added to the polymerizable LC medium according to the invention as auxiliaries from group c7), their proportion optionally corresponds to about 0 to 5.0% by weight, based on the total weight of the polymerizable LC medium. These concentration data are merely a guideline, since the amount and type of additive in each case depends on the nature of the substrate and the nature of the printing / coating composition. Corresponding technical information is usually available in this case from the manufacturer of such additives or can be determined by the skilled person in a simple manner through corresponding preliminary experiments.

[0224] Examples of additives for improving scratch resistance of group c8) include the above-mentioned products TEGO® Rad2100, TEGO® Rad2200, TEGO® Rad2500, TEGO® Rad2600 and TEGO® Rad2700 available from Tego.

[0225] For these auxiliaries, the quantitative data given for group c3) are equally suitable, i.e. these additives are optionally used in a proportion of about 0 to 5.0% by weight, preferably about 0 to 3.0% by weight, based on the total weight of the liquid crystal composition.

[0226] Examples that may be mentioned of light, heat and / or oxidation stabilizers are: Alkylated monophenols, such as 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, linear or branched nonylphenols having a side chain of the formula (I), such as 2,6-dinonyl-4-methylphenol, 2,4-dimethyl-6-(1'-methylundec-1'-yl)phenol, 2,4-dimethyl-6-(1'-methylheptadec-1'-yl)phenol, 2,4-dimethyl-6-(1'-methyltridec-1'-yl)phenol and mixtures of these compounds; alkylthiomethylphenols, such as 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol and 2,6-didodecylthiomethyl-4-nonylphenol;

[0227] Hydroquinone and alkylated hydroquinones, such as 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenyl stearate and bis(3,5-di-tert-butyl-4-hydroxyphenyl)adipate,

[0228] Tocopherols, such as α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and mixtures of these compounds, and tocopherol derivatives, such as tocopheryl acetate, succinate, nicotinate and polyoxyethylene succinate ("tocopherolate");

[0229] hydroxylated diphenyl thioethers, such as 2,2'-thiobis(6-tert-butyl-4-methylphenol), 2,2'-thiobis(4-octylphenol), 4,4'-thiobis(6-tert-butyl-3-methylphenol), 4,4'-thiobis(6-tert-butyl-2-methylphenol), 4,4'-thiobis(3,6-dis-sec-amylphenol) and 4,4'-bis(2,6-dimethyl-4-hydroxyphenyl) disulfide,

[0230] Alkylidenebisphenols, for example, 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 2,2'-methylenebis(6-tert-butyl-4-ethylphenol), 2,2'-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(6-nonyl-4-methylphenol), 2,2'-methylenebis(4,6-di-tert-butylphenol), 2,2-ethylidenebis(4,6- di-tert-butylphenol), 2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2'-methylenebis[6-(α-methylbenzyl)-4-nonylphenol], 2,2'-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4'-methylenebis(2,6-di-tert-butylphenol), 4,4'-methylenebis(6-tert-butyl-2-methylphenol), 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecyl-mercaptobutane, ethylene glycol bis[3,3-bis(3'-tert-butyl-4'-hydroxyphenyl)butyrate], bis(3-tert-butyl-4-hydroxy-5-methylphenyl)dicyclopentadiene, bis [2-(3'-tert-butyl-2'-hydroxy-5'-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate, 1,1-bis(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecyl-mercaptobutane, and 1,1,5,5-tetrakis(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane,

[0231] O-, N- and S-benzyl compounds, such as 3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl 4-hydroxy-3,5-dimethylbenzyl mercaptoacetate, tridecyl 4-hydroxy-3,5-di-tert-butylbenzyl mercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide and isooctyl-3,5-di-tert-butyl-4-hydroxybenzyl mercaptoacetate,

[0232] Aromatic hydroxybenzyl compounds, such as 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethyl-benzene and 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol;

[0233] triazine compounds, for example, 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexahydro-1,3,5-triazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate and 1,3,5-tris(2-hydroxyethyl)isocyanurate,

[0234] Benzylphosphonates, such as dimethyl 2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate and dioctadecyl 5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate,

[0235] acylaminophenols, such as 4-hydroxylauroylanilide, 4-hydroxystearoylanilide, and octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate;

[0236] Propionic and acetic acid esters, for example, of mono- or polyhydric alcohols, such as, for example, methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxalamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, and 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]-octane;

[0237] Propionamides based on amine derivatives, such as N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamine, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamine and N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine,

[0238] Ascorbic acid (vitamin C) and ascorbic acid derivatives, such as ascorbyl palmitate, laurate, and stearate, and ascorbyl sulfate and phosphate;

[0239] Antioxidants based on amine compounds, such as N,N'-diisopropyl-p-phenylenediamine, N,N'-di-sec-butyl-p-phenylenediamine, N,N'-bis(1,4-dimethylpentyl)-p-phenylenediamine, N,N'-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine, N,N'-bis(1-methylheptyl)-p-phenylenediamine, N,N'-dicyclohexyl-p-phenylenediamine, N,N'-diphenyl-p-phenylenediamine, N-(2-naphthyl)-p-phenylenediamine, N,N'-bis(2-naphthyl)-p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, N-(1-methylheptyl)-N'-phenyl-p-phenylenediamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, 4-(p-toluenesulfamoyl)diphenylamine, N,N'-dimethyl-N,N'-di-sec-butyl- p-Phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, N-phenyl-1-naphthylamine, N-(4-tert-octylphenyl)-1-naphthylamine, N-phenyl-2-naphthylamine, octyl-substituted diphenylamines such as p,p'-di-tert-octyldiphenylamine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoyl Aminophenol, 4-octadecanoylaminophenol, bis[4-methoxyphenyl)amine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N,N,N',N'-tetramethyl-4,4'-diaminodiphenylmethane, 1,2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(phenylamino)propane, (o-tolyl)biguanide, bis[4-(1',3'-Dimethylbutyl)phenyl]amine, tert-octyl-substituted N-phenyl-1-naphthylamine, mixture of mono- and di-alkylated tert-butyl / tert-octyldiphenylamines, mixture of mono- and di-alkylated nonyldiphenylamines, mixture of mono- and di-alkylated dodecyldiphenylamines, mixture of mono- and di-alkylated isopropyl / isohexyldiphenylamines, mixture of mono- and di-alkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine , phenothiazine, mixtures of mono- and di-alkylated tert-butyl / tert-octylphenothiazines, mixtures of mono- and di-alkylated tert-octylphenothiazines, N-allylphenothiazine, N,N,N',N'-tetraphenyl-1,4-diaminobut-2-ene, N,N-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine, bis(2,2,6,6-tetramethylpiperidin-4-yl)sebacate, 2,2,6,6-tetramethylpiperidin-4-one and 2,2,6,6-tetramethylpiperidin-4-ol,

[0240] Phosphines, phosphites and phosphonites, for example, triphenylphosphine, triphenylphosphite, diphenylalkylphosphites, phenyldialkylphosphites, tris(nonylphenyl)phosphite, trilaurylphosphite, trioctadecylphosphite, distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite, diisodecylpentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, diisodecyloxypentaerythritol diphosphite, bis(2,4-di-tert-butyl-6- methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tris(tert-butylphenyl))pentaerythritol diphosphite, tristearyl sorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl)4,4'-biphenylene diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenzo[d,g]-1,3,2-dioxaphosphocin, 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenzo[d,g]-1,3,2-dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, and bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite,

[0241] 2-(2'-hydroxyphenyl)benzotriazoles, for example, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3'- tert-butyl-2'-hydroxy-5'-methylphenyl)-5-chlorobenzotriazole, 2-(3'-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5'-ditert-amyl-2'-hydroxyphenyl)benzotriazole, 2-(3,5'-bis-(α,α-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5' 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3'-t tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)benzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole and 2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2'-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazol-2-ylphenol]; 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]-2H-benzotriazole complete esterification product with polyethylene glycol 300,

[0242] Sulfur-containing peroxide scavengers and sulfur-containing antioxidants, such as esters of 3,3'-thiodipropionic acid, such as the lauryl, stearyl, myristyl, and tridecyl esters, mercaptobenzimidazole, and 2-mercaptobenzimidazole, dibutyl zinc dithiocarbamate, dioctadecyl disulfide, and the zinc salt of pentaerythritol tetrakis(β-dodecylmercapto)propionate;

[0243] 2-hydroxybenzophenones, for example 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyclooxy, 4-dodecyloxy, 4-benzyloxy, 4,2',4'-trihydroxy, 2'-hydroxy-4,4'-dimethoxy derivatives,

[0244] Esters of unsubstituted and substituted benzoic acid, for example 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, bis(4-tert-butylbenzoyl)resorcinol, benzoylresorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl-3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl-3,5-di-tert-butyl-4-hydroxybenzoate and 2-methyl-4,6-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate,

[0245] Acrylates, for example, ethyl α-cyano-β,β-diphenylacrylate, isooctyl α-cyano-β,β-diphenylacrylate, methyl α-methoxycarbonylcinnamate, methyl α-cyano-β-methyl-p-methoxycinnamate, butyl-α- cyano-β-methyl-p-methoxycinnamate and methyl-α-methoxycarbonyl-p-methoxycinnamate, sterically hindered amines such as bis(2,2,6,6-tetramethylpiperidin-4-yl)sebacate, bis(2,2,6,6-tetramethylpiperidin-4-yl)succinate, bis(1,2,2,6,6-pentamethylpiperidin-4-yl)sebacate, bis(1-octyloxy) -2,2,6,6-tetramethylpiperidin-4-yl) sebacate, bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-n-butyl-3,5-di-tert-butyl-4-hydroxybenzyl malonate, condensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine with succinic acid, N,N'-bis(2,2,6,6-tetramethylpiperidine- 4-yl)hexamethylenediamine and condensation products of 4-tert-octylamino-2,6-dichloro-1,3,5-triazine, tris(2,2,6,6-tetramethylpiperidin-4-yl)nitrilotriacetate, tetrakis(2,2,6,6-tetramethylpiperidin-4-yl)1,2,3,4-butanetetracarboxylate, 1,1'-(1,2-ethylene)bis(3,3,5,5-tetramethylpiperidin-4-yl) Methylpiperazinone), 4-benzoyl-2,2,6,6-tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, bis(1,2,2,6,6-pentamethylpiperidin-4-yl)2-n-butyl-2-(2-hydroxy-3,5-di-tert-butylbenzyl)malonate, 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]Decane-2,4-dione, bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate, bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl) succinate, condensation products of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-morpholino-2,6-dichloro-1,3,5-triazine, 2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidin-4-yl)-1,3 ,5-triazine and 1,2-bis(3-aminopropylamino)ethane condensation products, 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidin-4-yl)-1,3,5-triazine and 1,2-bis(3-aminopropylamino)ethane condensation products, 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]-decane-2,4-dione, 3-dodecyl-1-(2,2,6,6-tetramethylpiperidin-4-yl)pyrrolidine-2, 5-dione, 3-dodecyl-1-(1,2,2,6,6-pentamethylpiperidin-4-yl)pyrrolidine-2,5-dione, a mixture of 4-hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine, condensation products of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-1,3,5-triazine, 1,2-bis(3-aminopropylamino)ethane and 2,4,6-trichloro-1,3,5 -Condensation products of triazine, 4-butylamino-2,2,6,6-tetramethylpiperidine, N-(2,2,6,6-tetramethylpiperidin-4-yl)-n-dodecylsuccinimide, N-(1,2,2,6,6-pentamethylpiperidin-4-yl)-n-dodecylsuccinimide, 2-undecyl-7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxospiro[4.5]-decane, 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro-[4.5] Condensation products of decane and epichlorohydrin, condensation products of 4-amino-2,2,6,6-tetramethylpiperidine with tetramethylolacetylenediurea and poly(methoxypropyl-3-oxy)-[4(2,2,6,6-tetramethyl)piperidinyl]-siloxane,.

[0246] Oxalamides, such as 4,4'-dioctyloxyoxanilide, 2,2'-diethoxyoxanilide, 2,2'-dioctyloxy-5,5'-di-tert-butoxanilide, 2,2'-didodecyloxy-5,5'-di-tert-butoxanilide, 2-ethoxy-2'-ethyloxanilide, N,N'-bis(3-dimethylaminopropyl)oxalamide, 2-ethoxy-5-tert-butyl-2'-ethoxanilide and mixtures thereof with 2-ethoxy-2'-ethyl-5,4'-di-tert-butoxanilide, and mixtures of ortho-, para-methoxy-disubstituted oxanilides, and mixtures of ortho- and para-ethoxy-disubstituted oxanilides, and

[0247] 2-(2-hydroxyphenyl)-1,3,5-triazines, such as 2,4,6-tris-(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)- 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]- 4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropoxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[4-(dodecyloxy / tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis 2-(2-hydroxy-4-hexyloxyphenyl)-4,6-diphenyl-1,3,5-triazine, 2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-1,3,5-triazine, 2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]-1,3,5-triazine and 2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-triazine.

[0248] In another preferred embodiment, the polymerizable LC medium comprises one or more specific antioxidants, preferably selected from the Irganox® series, e.g. the antioxidants Irganox® 1076 and Irganox® 1010 commercially available from Ciba, Switzerland.

[0249] In another preferred embodiment, the polymerizable LC medium comprises one or more, more preferably two or more, photoinitiators, for example selected from the commercially available Irgacure® or Darocure® (Ciba) series, in particular Irgacure 127, Irgacure 184, Irgacure 369, Irgacure 651, Irgacure 817, Irgacure 907, Irgacure 1300, Irgacure, Irgacure 2022, Irgacure 2100, Irgacure 2959 or Darcure TPO. In particular, the polymerizable LC medium preferably comprises one or more oxime ester photoinitiators selected from the commercially available OXE02 (Ciba), NCI930, N1919T (Adeka), SPI-03 or SPI-04 (Samyang).

[0250] The overall concentration of the polymerization initiator(s) in the polymerizable LC material is preferably 0.5-10%, very preferably 0.8-8%, more preferably 1-6%.

[0251] Preferably, the polymerizable LC medium comprises a predetermined ratio between the concentration of the photoinitiator and the concentration of all chiral compounds as a whole in the range of 1:1 to 1:5, more preferably in the range of 1:1 to 1:4, even more preferably in the range of 1:1 to 1:3.

[0252] In a preferred embodiment the polymerisable LC medium is dissolved in a suitable solvent, preferably selected from organic solvents.

[0253] The solvent is preferably selected from ketones such as acetone, methyl ethyl ketone, methyl propyl ketone, methyl isobutyl ketone, or cyclohexanone; acetates such as methyl, ethyl, or butyl acetate or methyl acetoacetate; alcohols such as methanol, ethanol, or isopropyl alcohol; aromatic solvents such as toluene or xylene; alicyclic hydrocarbons such as cyclopentane or cyclohexane; halogenated hydrocarbons such as dichloromethane or trichloromethane; glycols or their esters, such as PGMEA (propyl glycol monomethyl ether acetate), γ-butyrolactone. It is also possible to use binary, ternary, or higher mixtures of the above solvents. Methyl isobutyl ketone is a preferred solvent, particularly for multilayer applications.

[0254] When the polymerizable LC medium comprises one or more solvents, the total concentration of all solids, including RM, in the solvent(s) is preferably 10-60%.

[0255] Preferably the polymerizable LC medium is a) one or more bi- or polyreactive polymerizable mesogenic compounds, b) optionally one or more monoreactive polymerizable mesogenic compounds (preferably selected from compounds of formulae MRM8, MRM9 and / or MRM10 and their corresponding sub-formulae), c) in the case of cholesteric polymer films, one or more chiral mesogenic compounds (preferably selected from compounds of formula CRA or CRB, more preferably selected from compounds of CRB and its sub-formulas), d) optionally one or more antioxidants; e) optionally one or more adhesion promoters; f) optionally one or more surfactants; g) optionally one or more mono-, di- or multi-reactive polymerizable non-mesogenic compounds, h) optionally one or more dyes that exhibit an absorption maximum at the wavelength used to initiate photopolymerization; i) optionally one or more chain transfer agents; j) optionally one or more further stabilizers; k) optionally one or more lubricants and flow aids, and l) optionally one or more diluents; m) optionally a non-polymerizable nematic component; n) optionally one or more organic solvents Includes:

[0256] Alternatively, the polymerizable LC medium may be a) one or more bi- or polyreactive polymerizable mesogenic compounds, b) optionally one or more monoreactive polymerizable mesogenic compounds (preferably selected from compounds of formulae MRM8, MRM9 and / or MRM10 and their corresponding sub-formulae), c) in the case of cholesteric polymer films, one or more chiral mesogenic compounds (preferably selected from compounds of formula CRA or CRB, more preferably selected from compounds of CRB and its sub-formulas), d) optionally one or more antioxidants; e) optionally one or more adhesion promoters; f) optionally one or more surfactants; g) optionally one or more mono-, di- or multi-reactive polymerizable non-mesogenic compounds, h) optionally one or more dyes that exhibit an absorption maximum at the wavelength used to initiate photopolymerization; i) optionally one or more chain transfer agents; j) optionally one or more further stabilizers; k) optionally one or more lubricants and flow aids, and l) optionally one or more diluents; m) optionally a non-polymerizable nematic component; n) optionally one or more organic solvents Includes:

[0257] Optical components typically include: providing a layer of a polymerizable LC medium as described above and below on a substrate optionally provided with an alignment layer capable of inducing planar alignment for adjacent layers of polymerizable LC medium, - Irradiating the laminate with actinic radiation, providing a substrate with a layer of a cholesteric polymerizable LC medium as described above and below, - Irradiating the laminate with actinic radiation, If necessary, remove the stack or optical component from the substrate. It is prepared by a method comprising the steps of:

[0258] The coating order of the above layers is not critical to the optical effect achieved, but the direction of light input to the optical component is a factor that needs to be considered when applying the optical component to an optical or electro-optical device.

[0259] Typically, the polymerizable LC medium is applied or printed onto a substrate by known techniques such as spin coating or printing, and the solvent is evaporated before polymerization. It is often suitable to heat the coated solution to accelerate solvent evaporation.

[0260] The polymerizable LC material can be applied to the substrate by conventional coating techniques such as spin coating, bar coating or blade coating, or by conventional printing techniques known to the expert, such as screen printing, offset printing, reel-to-reel printing, letterpress printing, gravure printing, rotogravure printing, flexography, intaglio printing, pad printing, heat seal printing, inkjet printing, stamp or printing plate printing, etc.

[0261] Suitable substrate materials and substrates are known to experts and described in the literature, for example, conventional substrates used in the optical film industry, such as glass or plastic. Preferred substrates particularly suitable for polymerization are polyesters such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN), polyvinyl alcohol (PVA), polycarbonate (PC), triacetylcellulose (TAC), or cycloolefin polymers (COP), or commonly known color filter materials, in particular triacetylcellulose (TAC), cycloolefin polymers (COP), or commonly known color filter materials.

[0262] The Friedel-Creagh-Kmetz law states that the RM layer (γ RM ) and the substrate (γ s ) can be used to predict whether a mixture will adopt a planar or homeotropic orientation.

[0263] gamma RM >γ s In the case of γ, the reactive mesogenic compound exhibits homeotropic alignment, RM <γ s In this case, the reactive mesogenic compound exhibits homogeneous alignment.

[0264] Without being bound by theory, when the surface energy of the substrate is relatively low, the intermolecular forces between the reactive mesogens are stronger than the forces across the RM-substrate interface, and as a result, the reactive mesogens align perpendicular to the substrate (homeotropic alignment) to maximize the intermolecular forces. Therefore, an additional alignment layer capable of inducing planar alignment to the adjacent polymerizable LC medium is required.

[0265] When the surface tension of the substrate is greater than that of the RM, the forces across the interface become dominant. If the reactive mesogens are aligned parallel to the substrate, the interfacial energy is minimized and the long axis of the RM can interact with the substrate. One method to promote parallel alignment is to coat the substrate with a polyimide layer and rub it with a velvet cloth. Other suitable planar alignment layers are known in the art, such as rubbed polyimide or alignment layers prepared by photoalignment, as described in, for example, U.S. Pat. Nos. 5,602,661, 5,389,698, or 6,717,644.

[0266] A general review of alignment techniques is given, for example, in I. Sage, "Thermotropic Liquid Crystals," edited by GW Gray, John Wiley & Sons, 1987, pp. 75-77, and T. Uchida and H. Seki, "Liquid Crystals - Applications and Uses Vol. 3," edited by B. Bahadur, World Scientific Publishing, Singapore, 1992, pp. 1-63. A review of alignment materials and techniques is given in J. Cognard, Mol. Cryst. Liq. Cryst., Vol. 78, Supplement 1 (1981), pp. 1-77.

[0267] In a preferred embodiment, the method according to the present invention comprises a step of leaving the polymerizable LC medium for the first polymer film, for the second polymer film, or for both polymer films to stand for a certain period of time (hereinafter referred to as "annealing") in order to uniformly redistribute the polymerizable LC medium on the substrate or the first polymer film.

[0268] In a preferred embodiment, after coating the polymerizable LC medium on the substrate or the first polymer film, the laminate is annealed for 10 seconds to 1 hour, preferably 20 seconds to 10 minutes, most preferably 30 seconds to 2 minutes, preferably at room temperature.

[0269] In another embodiment, the annealing is carried out at an elevated temperature, preferably from 20°C to less than 120°C, more preferably from 40°C to less than 100°C, and most preferably from 50°C to less than 80°C.

[0270] In a preferred embodiment, the stack is annealed at high temperature and then cooled to room temperature, which can be done actively using a cooling aid or passively by simply leaving the stack to rest for a period of time.

[0271] In a preferred embodiment, in a first UV step the polymerizable LC medium is exposed to actinic radiation, as described for example in WO 01 / 20394, GB 2,315,072 or WO 98 / 04651. In a preferred embodiment, in a first UV step the polymerizable LC medium is exposed to actinic radiation, as described for example in WO 01 / 20394, GB 2,315,072 or WO 98 / 04651.

[0272] Actinic radiation means irradiation with light such as ultraviolet, infrared or visible light, irradiation with X-rays or gamma rays or irradiation with high energy particles such as ions or electrons. Preferably, the first UV step is carried out by irradiation with light, in particular with UV light, especially UVA light.

[0273] The light source for actinic radiation can be, for example, a single UV lamp or a set of UV lamps. If a high lamp power is used, the curing time can be shortened. Another possible light source for light radiation is a laser, such as a UV laser, an IR laser, or a visible laser.

[0274] The curing time for each step is determined independently depending on the reactivity of the photoreactive compound, the thickness of the applied layer, the output of the UV lamp, the selected wavelength, etc. The curing time is preferably 5 minutes or less, very preferably 3 minutes or less, and most preferably 1 minute or less. For mass production, a short curing time of 30 seconds or less is preferred.

[0275] The suitable UV radiation power in each step is preferably 5 to 300 mWcm -2 in the range of 50 to 250 mWcm -2 in the range of 100 to 180 mW cm -2 is within the range.

[0276] The preferred UV dose for each step, as a function of time relative to the applied UV radiation, is preferably between 20 and 1000 mJ / cm. -2 in the range of 40 to 800 mJcm -2 in the range of 40 to 500 mJcm -2 is within the range.

[0277] Curing in each step is independently preferably carried out in air, however, it is equally preferred that the curing steps be carried out under an inert gas atmosphere, preferably nitrogen.

[0278] The curing in each step is carried out independently at a temperature of preferably 1 to 70°C, more preferably 5 to 50°C, even more preferably 15 to 30°C, and most preferably at room temperature.

[0279] The preferred thickness of each polymerized LC film according to the present invention is determined by the optical properties desired in the film or final product.

[0280] For optical applications of the polymer film, it preferably has a thickness of 0.5 to 10 μm, very preferably 0.5 to 5 μm, in particular 0.5 to 3 μm.

[0281] After photopolymerization, the resulting polymer film stack or final optical component can be removed from the substrate and combined with other substrates or additional optical films by lamination processes known to those skilled in the art. Suitable substrates and optical films are set forth above and include, among others, polarizers.

[0282] The optical components according to the invention can be used in transmissive or reflective displays, in particular they can be used in conventional OLED displays or LCDs, in particular OLEDs.

[0283] The present invention is described above and below with particular reference to preferred embodiments, it being understood that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

[0284] Many of the compounds mentioned above and below or their mixtures are commercially available.All of these compounds are known or can be prepared by methods known per se, as described in the literature (for example, standard works such as Houben-Weyl, Methoden der Organischen Chemie [Methods of Organic Chemistry], Georg-Thieme-Verlag, Stuttgart), precisely under known and suitable reaction conditions for the reactions.Also, modifications known per se, but not mentioned here, can be used.

[0285] It will be understood that modifications can be made to the above-described embodiments of the invention that fall within the scope of the invention. Alternative features serving the same, equivalent, or similar purpose may be substituted for each feature disclosed herein, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is only an example of a generic series of equivalent or similar features.

[0286] All features disclosed herein may be combined in any combination, except combinations in which at least some of such features and / or steps are mutually exclusive. In particular, preferred features of the invention are applicable to all aspects of the invention and may be used in any combination. Similarly, features described in non-essential combinations may be used separately (not in combination).

[0287] It will be appreciated that many of the features described above, particularly those of the preferred embodiments, are inventive in their own right and not just as part of embodiments of the present invention, and that independent protection may be sought for these features in addition to or in place of the presently claimed invention.

[0288] The present invention will now be described in more detail with reference to the following examples, which are illustrative and not intended to limit the scope of the present invention. [Example]

[0289] <Polymerizable LC material used> The following mixtures are prepared according to the table below: <Mixture M1>

[0290] [Table 1] <Mixture M2>

[0291] [Table 2]

[0292] Irganox 1076 is a commercially available stabilizer (Ciba AG, Basel, Switzerland). NCI-930 is a commercially available photoinitiator (ADEKA Corporation, Japan). BYK-310 is a commercially available surfactant (BYK, Germany).

[0293] The mixtures were prepared by dissolving the solids in a toluene:cyclohexanone (7:3) mixture, with a mass ratio of 30% mixture M1 or M2 and 70% solvent, respectively.

[0294] <Application method>: Each solution was homogenized at a moderately elevated temperature. Next, the solution of Mixture M1 was spin-coated at 5000 rpm for 30 seconds onto a glass substrate covered with a commercially available polyimide. The coated film was annealed on a hotplate at 60 °C for 60 seconds, and then cooled using a circulator (20 °C) while applying a N purge (20 L / min) for 60 seconds. Curing was performed using a high-pressure mercury lamp (LH6 Fusion) at 77% power (200 mJ / cm). 2 ) at 10 m / min, while an N2 purge is also applied. Next, the solution of mixture M2 is spin-coated onto the polymer film 1 obtained from M1 at 4000 rpm for 30 seconds. The laminate is annealed on a hotplate at 60 °C for 60 seconds, and then cooled using a circulator (20 °C) while applying an N2 purge (20 L / min) for 60 seconds. Curing is performed using a high-pressure mercury lamp (LH6 Fusion) at 77% power (200 mJ / cm2). 2 ) at 10 m / min, followed by N2 purging.

[0295] <Optical results> The resulting optical component exhibits reverse dispersion. The retardation profile approximates ideal quarter-wave retardation at all viewing angles and visible wavelengths. The on-axis dispersion is 0.870, but the dispersion value increases with viewing angle, and the corresponding angular dispersion profile is nearly symmetric. The retardation profiles at wavelengths of 450 nm, 550 nm, and 650 nm have all the characteristics of a planar-aligned polymer film in the optical component. At lower wavelengths, the change in retardation with angle of incidence is generally smaller.

[0296] The retardation profile (retardation [nm] / angle of incidence [°]), angular retardation (R450 / R550 / angle of incidence [°]), and optical dispersion (retardation [nm] / wavelength [nm]) are measured by ellipsometry.

[0297] <Anti-reflective visual performance> Antireflection stacks are made by placing an optical component between a reflective surface, such as a metal cathode in an OLED display, and a linear polarizer, and compared to standard planar aligned films, such as those described in WO 2016 / 020035, the optical component of the present invention exhibits a darker reflection.

[0298] <Conclusion> Combining polymer films as described above results in an emulated chiral pitch, allowing for control of the final film dispersion and retardation to meet anti-reflection requirements. The spectral retardation of this optical component according to the present invention matches that of an ideal quarter-wave plate much better than standard polymer films, such as those described in WO 2016 / 020035. Off-axis performance is also somewhat improved compared to single-film applications involving only one polymer film. The blend used is composed of positive dispersion materials, eliminating the need for complex and expensive H-type or T-type LC molecules to achieve the desired effect of reverse or negative light dispersion in the optical component. The material cost of the optical component is significantly reduced compared to other reverse dispersion application methods, such as those described in WO 2016 / 020035, and its simplicity and compatibility with mass production methods make it a potentially viable commercial alternative for anti-reflection products.

Claims

1. An optical component comprising two or more liquid crystal polymer films, a first polymer film exhibiting uniform planar alignment of polymerized LC molecules and a second polymer film adjacent to the first polymer film exhibiting cholesteric alignment of polymerized LC molecules.

2. 10. The optical component of claim 1, wherein the second polymer film adjacent to the first polymer film exhibits a cholesteric orientation of the polymerized LC molecules with a quarter-pitch rotation across the film thickness of the second polymer film.

3. 3. An optical component according to claim 1 or 2, which exhibits a reverse or negative light dispersion profile.

4. Optical component according to any of the preceding claims, wherein at least one polymer film is obtained from a polymerisable LC material comprising one or more di- or multi-reactive mesogenic compounds.

5. 5. Optical component according to any one of claims 1 to 4, wherein at least one polymer film is obtained from a polymerisable LC material comprising one or more di- or multi-reactive mesogenic compounds selected from compounds of formula DRM 【Chemical 1】 (In the formula, P １ and P ２ each independently represents a polymerizable group, Sp １ and Sp ２ are each independently a spacer group or a single bond, MG is a rod-shaped mesogenic group, said group being selected from the formula MG 【Chemistry 2】 During the ceremony, A １ and A ２ when there are a plurality of them, each independently represents an aromatic or alicyclic group, which may contain one or more heteroatoms selected from N, O and S, and which may be mono- or polysubstituted by L; L is P-Sp-, F, Cl, Br, I, -CN, -NO ２ , -NCO, -NCS, -OCN, -SCN, -C(=O)NR ｘ R ｙ , -C(=O)OR ｘ , -C(=O)R ｘ , -NR ｘ R ｙ , —OH, —SF ５ , optionally substituted silyl, aryl or heteroaryl having 1 to 12 C atoms, and straight-chain or branched alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 12 C atoms, with the proviso that one or more H atoms may be replaced by F or Cl, R ｘ , R ｙ , R ００ and R ０００ each independently represent H or alkyl having 1 to 12 C atoms, Z １ When a plurality of groups are present, they each independently represent —O—, —S—, —CO—, —COO—, —OCO—, —S—CO—, —CO—S—, —O—COO—, —CO—NR ００ -, -NR ００ —CO—, —NR ００ -CO-NR ０００ , -NR ００ -CO-O-, -O-CO-NR ００ -, -OCH ２ -, -CH ２ O-, -SCH ２ -, -CH ２ S-, -CF ２ O-, -OCF ２ -, -CF ２ S-, -SCF ２ -, -CH ２ CH ２ -, -(CH ２ ) ｎ１ , -CF ２ CH ２ -, -CH ２ CF ２ -, -CF ２ CF ２ -, -CH=N-, -N=CH-, -N=N-, -CH=CR ００ -, -CY １ =CY ２ represents -, -C≡C-, -CH═CH-COO-, -OCO-CH═CH- or a single bond; Y １ and Y ２ represent, independently of one another, H, F, Cl or CN, n is 1, 2, 3 or 4; n1 is an integer from 1 to 10.

6. 6. Optical component according to any one of claims 1 to 5, wherein at least one polymer film is obtained from a polymerisable LC material, wherein the concentration of di- or multireactive mesogenic compounds in the polymerisable LC material is in the range of 5 to 70%.

7. Optical component according to any of the preceding claims, wherein at least one polymer film is obtained from a polymerisable LC material comprising one or more monoreactive mesogenic compounds.

8. Optical component according to any of the preceding claims, wherein at least one polymer film is obtained from a polymerisable LC material comprising one or more monoreactive mesogenic compounds selected from the group of compounds of formula MRM 【Chemistry 3】 (In the formula, P １ , Sp １ and MG has the meaning given in formula DRM, R is F, Cl, Br, I, —CN, or —NO ２ , -NCO, -NCS, -OCN, -SCN, -C(=O)NR ｘ R ｙ , -C(=O)X, -C(=O)OR ｘ , -C(=O)R ｙ , -NR ｘ R ｙ , —OH, —SF ５ , optionally substituted silyl, linear or branched alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 12 C atoms, with the proviso that one or more H atoms may be replaced by F or Cl, X is a halogen; R ｘ and R ｙ are each independently H or alkyl having 1 to 12 C atoms.

9. 9. Optical component according to any of the preceding claims, wherein at least one polymer film is obtained from a polymerisable LC material comprising one or more monoreactive mesogenic compounds in a concentration of 1 to 80% of total monoreactive RMs.

10. Optical component according to any of the preceding claims, wherein the polymer film exhibiting cholesteric orientation of polymerised LC molecules is obtained from a polymerisable LC material comprising one or more chiral mesogenic compounds.

11. 11. Optical component according to any one of claims 1 to 10, wherein the polymer film exhibiting cholesteric alignment of polymerized LC molecules is obtained from a polymerizable liquid crystal material comprising one or more monoreactive chiral compounds selected from the group of compounds of formulae CRMa to CRMc 【Chemistry 4】 (In the formula, P ０＊ represents a polymerizable group P, R is alkyl, alkoxy, thioalkyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having one or more, preferably 1 to 15, carbon atoms, or P ０＊ - (CH ２ ) ｏ -X ２ - and A ０ and B ０ are, in the case of multiple occurrences, independently of one another, 1,4-phenylene or trans-1,4-cyclohexylene which is unsubstituted or substituted by 1, 2, 3 or 4 radicals L as defined above, X １ and X ２ are each independently —O—, —COO—, —OCO—, —O—CO—O— or a single bond, Z ０＊ and Z ０ When two or more of them appear, they are independently -COO-, -OCO-, -O-CO-O-, -OCH ２ -, -CH ２ O-, -CF ２ O-, -OCF ２ -, -CH ２ CH ２ -, -(CH ２ ) ４ -, -CF ２ CH ２ -, -CH ２ CF ２ -, -CF ２ CF ２ -, -C≡C-, -CH═CH-, -CH═CH-COO-, -OCO-CH═CH- or a single bond, each o is independently 0, 1, 2 or 3; t is 0, 1 or 2; o is 0 or an integer from 1 to 12; a and v are 0, 1 or 2; z is 0 or 1; provided that the naphthalene ring may additionally be substituted with one or more identical or different groups L; Here, L's are each independently F, Cl, CN, a halogenated alkyl having 1 to 5 carbon atoms, an alkoxy, an alkylcarbonyl, an alkoxycarbonyl, an alkylcarbonyloxy, or an alkoxycarbonyloxy.

12. A method for manufacturing an optical component according to any one of claims 1 to 11, providing a layer of a polymerizable LC medium on a substrate provided with an alignment layer capable of inducing planar alignment for an adjacent layer of polymerizable LC medium, - Irradiating the laminate with actinic radiation, - providing a layer of a cholesteric polymerizable LC medium on the polymer film obtained from the previous step, - Irradiating the laminate with actinic radiation, If necessary, remove the stack or optical component from the substrate. A method comprising the steps of:

13. Use of an optical component according to any one of claims 1 to 11 in an optical or electro-optical device.

14. An optical or electro-optical device comprising the optical component according to any one of claims 1 to 11.

15. 15. An optical or electro-optical device according to claim 14, characterized in that it is an OLED display.

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