Stabilizer composition for silyl-modified polymer sealant

Abstract

The present application relates to a stabilizer composition comprising at least one hindered amine light stabilizer (HALS), at least one phenolic antioxidant, at least one UV absorber, and optionally at least one diluent and / or other components. The stabilizer composition is preferably used in a sealant or adhesive based on a silane-modified polymer (SMP). The present application also relates to a polymer composition based on a silane-modified polymer (SMP) comprising a novel stabilizer package, the package comprising at least one hindered amine light stabilizer (HALS), at least one phenolic antioxidant, at least one UV absorber, and optionally at least one diluent and / or other components.

Description

Technical Field

[0001] This application relates to a stabilizer composition comprising at least one hindered amine light stabilizer, at least one phenolic antioxidant, at least one ultraviolet absorber, and optionally at least one diluent and / or other components. The stabilizer composition is preferably used in sealants or adhesives based on silyl-modified polymers (SMPs). This application also relates to a polymer composition based on silyl-modified polymers (SMPs) comprising the aforementioned novel stabilizer combination, which contains at least one hindered amine light stabilizer, at least one phenolic antioxidant, at least one ultraviolet absorber, and optionally at least one diluent and / or other components.

[0002] Furthermore, this application relates to a method for preparing the above-mentioned stabilizer composition, and the application of the stabilizer composition as a heat stabilizer and / or ultraviolet stabilizer in silyl-modified polymer sealants and adhesives. Background Technology

[0003] Silyl-modified polymers (SMPs), such as silyl-modified polyethers (also known as MS polymers), silyl-modified polyurethanes (also known as SPUR polymers), and silyl-modified acrylic polymers, and their applications as sealants and adhesives in industries such as construction, have been known for many years, as seen in US Patent Application US2002 / 198308, US Patent US6077896, European Patent Application EP-A1288247, and US Patent Application US2003 / 0105261. Examples of commercially available silyl-modified polymer products include Kaneka Corporation's MS Polymers. ® (such as MSPolymers) ® S203H, MSPolymers ® S303H) or Evonik's ST series polymers. Commercially available MS Polymers ® There are multiple grades, each with different levels of functionalization (the number and type of groups attached to the main chain) and main chain structure, and a wider viscosity range.

[0004] These silyl-modified polymers can be used as base materials for moisture-curing one-component (often abbreviated as 1K or 1c in the literature) or two-component (often abbreviated as 2K or 2c in the literature) sealant or adhesive compositions. These compositions can be stored in a essentially moisture-free state and rapidly cure from the surface when exposed to the atmosphere. Typically, silyl-modified polymer sealants cure from a liquid or gel state to an elastic solid state, with the curing process involving the hydrolysis and crosslinking reactions of the silyl groups to achieve crosslinking of the polymer chains.

[0005] For many years, silyl-modified polymers (SMPs) have been widely used as sealants and adhesives in the construction, aerospace, automotive, shipbuilding, and other related industries. These products are typically isocyanate-free and solvent-free, and possess excellent properties such as strong adhesion to a variety of substrates, excellent adhesion durability even after simple surface treatment, and good temperature and UV stability. Generally, the core characteristics of silyl-modified polymer sealants are their excellent flexibility and paintability.

[0006] International patent application publication WO2016 / 081823 discloses a stabilizer composition for protecting organic materials from ultraviolet and thermal degradation. The stabilizer composition includes an ultraviolet absorber selected from o-hydroxyphenyl triazine compounds, o-hydroxybenzophenone compounds, o-hydroxyphenyl benzotriazole compounds, and benzoxazinone compounds, a synergist (e.g., selected from C12-C60 alcohols, fatty acid esters, and their alkoxylated derivatives), and a hindered amine light stabilizer.

[0007] US Patent Application US2010 / 0087576 discloses a moisture-curing silicone composition including an oxaloyl aniline-based UV stabilizer. Furthermore, combinations of UV absorbers and hindered amine light stabilizers in silyl-modified polymer sealants are also described in Japanese Patent Application JP2010 / 248408 and Chinese Patent Application CN107892900.

[0008] Chinese patent application CN106833479 discloses a silane polyether sealant for automobiles, which includes a heat stabilizer, an ultraviolet absorber, a hindered amine light stabilizer, and an antioxidant.

[0009] Japanese patent application JP2010 / 270241 discloses an organosilicon foam containing stabilizers, including hindered phenolic antioxidants, hindered amine light stabilizers, and ultraviolet absorbers.

[0010] International patent application WO2012 / 010570 discloses an additive combination for sealants (such as sealants based on end-capped silane polyethers), the additive combination comprising at least two different sterically hindered amines (e.g., Tinuvin). ® 622 and Tinuvin ® 144) and an ultraviolet absorber (e.g., Tinuvin) ® 312). This document also discloses an additive combination comprising at least two sterically hindered amines, at least one other stabilizer, a dispersant (dispersing polymer), and a plasticizer. But Tinuvin... ® Hindered amine light stabilizers like 622 have low solubility in sealant compositions and are therefore not suitable.

[0011] International patent application WO2002 / 12385A1 discloses a synergistic stabilizer composition for color-stabilized thermoplastic polymers (particularly for polyolefin pipes and other polyolefin molding materials in long-term contact with water), the stabilizer composition comprising at least one sterically hindered amine (including polymers of epichlorohydrin and 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-20-(2,3-epoxypropyl)-dispiro[5.1.11.2]-eicosicosan-21-one) The stabilizer composition comprises 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-20-(2,3-epoxipropyl)-dispiro-[5.1.11.2]-heneicosane-21-one and at least one phenolic antioxidant (preferably bis-[3,3-bis-(4'-hydroxy-3'-tert-butylphenyl)butanoic acid]-glycolester), and may also include other additives such as UV absorbers.

[0012] International patent application WO2012 / 010570 also discloses an additive combination for sealants (such as sealants based on end-capped silane polyethers), the additive combination comprising at least two sterically hindered amines, at least one compound selected from 2-ethyl-2'-ethoxy-oxalanilide and 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate, and a dispersant.

[0013] European patent application EP1925628A1 proposes a combination of sterically hindered amines and phenolic antioxidants for improving the crosslinking / curing rate of vinylsilane-grafted polyolefins in the presence of water or moisture.

[0014] International patent application WO2006 / 003092 discloses a stabilizer composition for use in polyether polyol, polyester polyol or polyurethane compositions, the composition comprising (a) a polyether polyol, polyester polyol or polyurethane, and (b) an oxaloylaniline ultraviolet absorber and / or a hindered amine light stabilizer.

[0015] Japanese patent application JP2005–113066 discloses a curable composition comprising (A) an organic polymer containing a crosslinkable silyl group, (B) an ultraviolet absorber having a triazine backbone, and (C) a hindered amine light stabilizer. Component (A) is preferably one or more compounds selected from crosslinkable silyl-containing polyoxyethylene polymers, crosslinkable silyl-containing (meth)acrylic acid-modified polyoxyethylene polymers, and crosslinkable silyl-containing (meth)acrylic acid polymers.

[0016] In their paper "Progress in Organic Coatings" Vol. 101, pp. 90-99, 2016, Geno et al. investigated the accelerated aging and degradation behavior of polyester thermosetting powder coatings. The authors examined the durability and stability of typical polyester powder coatings used as surface and structural white decorative coatings on building exteriors and studied compositions including UV absorbers and hindered amine light stabilizers.

[0017] US Patent 8399548B2 discloses a moisture-curable crosslinkable composition that is stable under anhydrous conditions, comprising a specific organosilicon compound and one or more oxaloylaniline compounds, and optionally includes hindered amine light stabilizers, antioxidants and other additives.

[0018] Currently, in the silyl-modified polymer sealant industry, hindered amine light stabilizers are often used in combination with benzotriazole UV absorbers to achieve both light and heat stability. A commonly used combination in the industry is the hindered amine light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (CAS No. 52829-07-9) and the UV absorber 2-(2′-hydroxy-3′-tert-butyl-5′-methylphenyl)-5-chlorobenzotriazole (CAS No. 3896-11-5), which provides both light and heat stability. However, benzotriazole UV absorbers have drawbacks, causing silyl-modified polymer sealants and adhesives to yellow in the initial stage and during construction, ultimately resulting in product discoloration, which is unacceptable in many applications.

[0019] The use of powdered stabilizers also has many drawbacks. Measurement is difficult, especially for small doses; and dust is easily generated during weighing, mixing, and / or application. Furthermore, powdered stabilizers tend to form agglomerates, making them difficult to disperse uniformly in the final product, often requiring expensive processing such as grinding of the powdered stabilizer composition.

[0020] International patent application WO2021 / 005201 discloses a stabilizer composition comprising at least one oxaloylaniline ultraviolet absorber, at least one hindered amine light stabilizer, and at least one phenolic antioxidant. This stabilizer composition can be used in sealants or adhesives based on silyl-modified polymers.

[0021] International patent application WO2022 / 152668 also discloses a stabilizer composition for sealants or adhesives based on silyl-modified polymers, the stabilizer composition comprising at least one oxaloylaniline UV absorber and / or at least one (2-hydroxyphenyl)-triazine UV absorber, at least one oligomeric hindered amine light stabilizer, and optionally at least one phenolic antioxidant, at least one liquid diluent and / or other components.

[0022] The industry still needs to develop novel and improved stabilization solutions for silyl-modified polymer sealants to enhance their weather resistance. Preferably, the stabilization solution should not cause initial yellowing (i.e., yellowing occurring after mixing with the polymer (e.g., in a cartridge) or before the curing step), should not affect the color of the stabilized silyl-modified polymer sealant after heat treatment, and should ultimately not impair the performance of the silyl-modified polymer sealant, such as mechanical properties, chemical resistance, adhesive strength, and rheological properties. Furthermore, the industry desires stabilization solutions with better applicability in terms of metering and application; therefore, stabilizers need to have good solubility in commonly used silyl-modified polymer sealants. Based on this, there is a demand for liquid stabilizers in various application scenarios.

[0023] This application unexpectedly reveals that a stabilizer combination, particularly a synergistic stabilizer combination, consisting of at least one oxalaniline-based UV absorber and / or at least one (2-hydroxyphenyl)-s-triazine-based UV absorber, at least one specific hindered amine light stabilizer, and optionally at least one specific phenolic antioxidant and at least one liquid diluent, can significantly improve light and heat stability without affecting the inherent superior properties of silyl-modified polymer sealants, such as elongation at break, tensile strength, and paintability. The liquid diluent also makes the stabilizer combination easier to formulate and more uniformly dispersed in the final silyl-modified polymer sealant, further enhancing the applicability of this stabilizer combination. Summary of the Invention

[0024] This application relates to a stabilizer composition comprising:

[0025] (A) At least one hindered amine light stabilizer A as shown in the following chemical formula (I): (I) In the formula, R1, R2, R3, and R4 are independently selected from alkyl groups having 1 to 12 carbon atoms; and R5 and R6 are independently selected from hydrogen and alkyl groups having 1 to 24 carbon atoms; (B) At least one phenolic antioxidant as component B, which is shown in the following chemical formula (II): (II) In the formula, R x and R y They are independently selected from straight-chain or branched alkyl groups having 1 to 10 carbon atoms; R z Selected from hydrogen or alkyl groups having 1 to 10 carbon atoms; X is –O-(CH2) q -O- groups, where q is an integer from 1 to 12; And p is 0 or an integer from 1 to 6; (C) At least one ultraviolet absorber component C, Wherein, the ultraviolet absorber component C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) At least one (2-hydroxyphenyl)-triazine compound as shown in formula (III.1) as component C1: (III.1), In the formula, R a R b R c R d R e and R f The groups are independently selected from hydrogen, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms and containing 1 to 4 oxygen atoms, and combinations thereof; (C2) At least one oxaloyl aniline compound as shown in formula (III.2) as component C2: (III.2), In the formula, R 10 and R 11They are independently selected from alkyl groups having 1 to 20 carbon atoms and alkoxy groups having 1 to 20 carbon atoms and containing 1 to 4 oxygen atoms; (D) Optionally, at least one diluent D; and (E) Optionally, at least one other additive E; The sum of the contents of components A, B, C, D and E is 100% by weight of the total weight of the stabilizer composition.

[0026] This application discovers that stabilizer compositions comprising components A, B, C, and optionally D and / or E can significantly improve the UV resistance stability of silyl-modified polymer compositions. Furthermore, the stabilizer compositions of this application generally do not affect the properties of the silyl-modified polymer compositions, such as color properties.

[0027] The stabilizer compositions of this application can be advantageously used in sealants and adhesives based on silyl-modified polymers (such as silyl-modified polyethers). Compared with conventional stabilizer systems (such as Tinuvin...) ® Compared to 326), the stabilizer composition of this application can improve the UV resistance and heat resistance of silyl-modified polymer sealants and prevent initial yellowing. Preferably, after heat treatment, the silyl-modified polymer composition with the added stabilizer composition of this application will not show color change (e.g., color change based on the CIE color system). Preferably, the mechanical properties of the stabilized silyl-modified polymer composition remain unchanged or even improved.

[0028] On the other hand, this application relates to a method for preparing the above-mentioned stabilizer composition, the method comprising mixing components A, B, C and optional components D and / or E.

[0029] This application also relates to the use of the above-described stabilizer composition as a stabilizer in sealants or adhesives based on silyl-modified polymers.

[0030] Accordingly, in another aspect, this application relates to a polymer composition comprising: (P) At least one polymer P, which is selected from silane-modified polymers; (S) Stabilizer composition S, which comprises the following components: At least one hindered amine light stabilizer A; At least one phenolic antioxidant B; At least one ultraviolet absorber C; Optionally, at least one liquid diluent D; and Optionally, at least one other additive E; Components A, B, C, D and E are as defined in claims 1 to 9; (F) Optionally, at least one filler F; (G) Optionally, at least one other additive G.

[0031] For the purposes of this application, the term "stabilizer composition" includes blends (i.e. mixtures) comprising components A, B, C as defined herein, and optional D and / or E. The "stabilizer composition" of this application is generally provided as a blend of the components, which can be prepared by mixing components A, B, C, and optional D and / or E.

[0032] For the purposes of this application, the term "stabilizer combination" includes a combination of components A, B, C, and optionally D and / or E as defined herein, which may be provided in blend form (i.e., premixed) or in non-blended form (i.e., not premixed). Therefore, the polymer composition of this application including stabilizer combination S can be prepared by mixing the components of the polymer composition with individual stabilizer components, or by mixing the components of the polymer composition with a premixed blend of all or part of the stabilizer components (A, B, C, and optionally D and / or E). Therefore, the term "stabilizer combination" in this application includes the term "stabilizer composition," but the term "stabilizer composition" does not necessarily include the term "stabilizer combination" as used in this application. Both terms refer to the same components A, B, C, and optionally D and / or E, differing only in their form of provision (i.e., individual components or fully / partially premixed blends).

[0033] For the purposes of this application, the term "alkyl" includes straight-chain alkyl or branched-chain alkyl. Preferably, it is a straight-chain C1-C20 alkyl, especially a straight-chain C1-C18 alkyl, more preferably a straight-chain C1-C12 alkyl; and a branched-chain C3-C20 alkyl, especially a branched-chain C3-C18 alkyl, more preferably a branched-chain C3-C12 alkyl. Examples of alkyl groups specifically include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, 1-methylbutyl, tert-pentyl, neopentyl, n-hexyl, 3-hexyl, 2-methyl-1-pentyl, 3-methyl-1-pentyl, 4-methyl-1-pentyl, 2-methyl-2-pentyl, 3-methyl-2-pentyl, 4-methyl-2-pentyl, 2-methyl-3-pentyl, 3-methyl-3-pentyl, 2,2-dimethyl-1-butyl, 2,3- Dimethyl-1-butyl, 3,3-dimethyl-1-butyl, 2-ethyl-1-butyl, 2,3-dimethyl-2-butyl, 3,3-dimethyl-2-butyl, n-heptyl, n-octyl, 1-methylheptyl, 2-ethylhexyl, 2,4,4-trimethylpentyl, 1,1,3,3-tetramethylbutyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecanyl, n-hexadecyl, n-heptadecyl, n-octadecyl, and n-eicosyl.

[0034] For the purposes of this application, the term "alkoxy" refers to an alkyl group linked by an oxygen atom, wherein the carbon chain of the alkyl group may be interrupted by one or more (preferably 1 to 3) non-adjacent heteroatoms -O-. The alkyl group described above is preferred. Examples of alkoxy groups include methoxy, ethoxy, n-propoxy, 1-methylethoxy, butoxy, 1-methylpropoxy, 2-methylpropoxy, 1,1-dimethylethoxy, n-pentoxy, 1-methylbutoxy, 2-methylbutoxy, 3-methylbutoxy, 1,1-dimethylpropoxy, 1,2-dimethylpropoxy, 2,2-dimethylpropoxy, 1-ethylpropoxy, hexoxy, 1-methylpentoxy, 2-methylpentoxy, 3-methylpentoxy, 4-methylpentoxy, 1,1-dimethylbutoxy, 1,2-dimethylbutoxy, 1,3-dimethylbutoxy, 2,2-dimethylbutoxy, 2,3-dimethylbutoxy, 3,3-dimethylbutoxy, 1-ethylbutoxy, 2-ethylbutoxy, 1,1,2-trimethylpropoxy, 1,2,2-trimethylpropoxy, 1-ethyl-1-methylpropoxy or 1-ethyl-2-methylpropoxy, hexoxy, –(OC2H4) u -(OC3H6) v -H group (where u and v are each independently a number from 0 to 19, preferably a number from 0 to 12, and satisfying u+v is a number from 1 to 20, preferably a number from 2 to 12).

[0035] stabilizer composition The stabilizer composition of this application comprises (or consists of) at least the following components: (A) At least one hindered amine light stabilizer A as shown in the following chemical formula (I): (I) In the formula, R1, R2, R3 and R4 are independently selected from alkyl groups having 1 to 12 carbon atoms, preferably alkyl groups having 1 to 8 carbon atoms, and more preferably alkyl groups having 1 to 4 carbon atoms; R5 and R6 are independently selected from hydrogen and alkyl groups having 1 to 24 carbon atoms, preferably alkyl groups having 2 to 20 carbon atoms, more preferably alkyl groups having 2 to 18 carbon atoms, such as alkyl groups having 4 to 18 carbon atoms; (B) At least one phenolic antioxidant B represented by the following chemical formula (II): ( (II) In the formula, R x and R y The components are independently selected from straight-chain or branched alkyl groups having 1 to 10 carbon atoms, preferably branched alkyl groups having 1 to 6 carbon atoms, more preferably branched alkyl groups having 1 to 4 carbon atoms, and even more preferably R. x and R y One or both of them are tert-butyl; R z Selected from hydrogen or alkyl groups having 1 to 10 carbon atoms, preferably alkyl groups having 1 to 6 carbon atoms, more preferably alkyl groups having 1 to 4 carbon atoms; X is –O-(CH2) q -O- group, wherein q is an integer from 1 to 12, preferably an integer from 2 to 6 or 2 to 4; p is an integer from 1 to 6, preferably an integer from 1 to 4; (C) At least one ultraviolet absorber component C, wherein the ultraviolet absorber component C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) At least one (2-hydroxyphenyl)-triazine compound as shown in formula (III.1) as component C1: (III.1), In the formula, R a R b R c R d R e and R fThe groups are independently selected from hydrogen, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms and containing 1 to 4 oxygen atoms, and combinations thereof; (C2) At least one oxaloyl aniline compound as shown in formula (III.2) as component C2: (III.2), In the formula, R 10 and R 11 The alkyl groups are selected independently from each other, which have 1 to 20 carbon atoms (preferably alkyl groups with 5 to 20 carbon atoms) and alkoxy groups which have 1 to 20 carbon atoms and contain 1 to 4 oxygen atoms (preferably alkoxy groups containing 1 to 2 oxygen atoms and containing 1 to 12 carbon atoms).

[0036] In addition to hindered amine light stabilizer A, phenolic antioxidant B, and ultraviolet absorber C, the stabilizer composition of this application may also include one or more of the following components D and / or E: (D) At least one optional diluent D; (E) At least one other additive E, optionally.

[0037] The sum of the contents of components A, B, C, and optionally D and / or E is 100% of the total weight of the stabilizer composition.

[0038] In one embodiment of this application, the stabilizer composition includes at least one ultraviolet absorber component C, wherein the ultraviolet absorber C includes (or consists of) one or more (2-hydroxyphenyl)-triazine compounds represented by formula (III.1) (as component C1).

[0039] In another embodiment of this application, the stabilizer composition includes at least one ultraviolet absorber as component C, wherein the ultraviolet absorber C includes (or consists of) one or more oxaloylaniline compounds represented by formula (III.2) (as component C2).

[0040] In yet another embodiment of this application, the stabilizer composition comprises at least: (C) At least one ultraviolet absorber as component C, wherein the ultraviolet absorber C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) One or more (2-hydroxyphenyl)-triazine compounds represented by formula (III.1) s -triazine) is used as component C1; (C2) One or more oxaloyl aniline compounds represented by formula (III.2) as component C2.

[0041] In another embodiment of this application, the stabilizer composition comprises at least: (C) At least one ultraviolet absorber as component C, wherein the ultraviolet absorber C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) One or more (2-hydroxyphenyl)-triazine compounds selected from compounds shown in Formula (III.1)-1, Formula (III.1)-2 and combinations thereof. s -triazine) is used as component C1; (C2) One or more oxaloyl aniline compounds represented by the following formula (III.2)-1 are used as component C2.

[0042] In one embodiment, the stabilizer composition of this application is preferably in a substantially liquid form, such as a solution, dispersion, emulsion, suspension, or paste, preferably a solution or suspension, and especially a solution. Specifically, the stabilizer composition can be made into a substantially liquid form by means of a liquid diluent D. Furthermore, one or more of components A, B, C, and / or E may also be in liquid form.

[0043] For the purposes of this application, the term "basic liquid" means that, in addition to the main liquid portion, the composition may also include a certain proportion of solid components, such as undissolved components A and B, and optionally C and / or E.

[0044] For the purposes of this application, the term "liquid" refers to a composition having at least a low viscosity at room temperature (preferably in the range of 10°C to 30°C, more preferably in the range of 0°C to 60°C). Preferably, the liquid composition has a shear rate of less than 10 s⁻¹, as measured by a rotational viscometer according to the method in Section 6.2 of DIN EN 12092:2002. - ¹ Under any conditions, the viscosity is below 400 Pa. s.

[0045] Therefore, in one embodiment of this application, the stabilizer composition is in liquid form. The liquid form of the stabilizer composition can be achieved by using hindered amine light stabilizer A and / or ultraviolet absorber C, which are liquid or partially liquid at room temperature (preferably in the range of 10°C to 30°C, more preferably in the range of 0°C to 60°C).

[0046] In another embodiment, the stabilizer composition, in addition to components A, B, C, and optionally E, further includes at least one liquid diluent D to provide the stabilizer composition in liquid form. The liquid diluent D may be selected from suitable liquid diluents, such as suitable solvents, liquid additives, or combinations thereof. Therefore, in one embodiment of this application, the stabilizer composition comprises (or consists of): (A) At least one hindered amine light stabilizer is component A; (B) At least one phenolic antioxidant is component B; (C) At least one ultraviolet absorber as component C; and (D) At least one liquid diluent is component D.

[0047] Preferably, the liquid diluent component D is in a liquid or partially liquid state at room temperature, preferably in the range of 10°C to 30°C, and more preferably in the range of 0°C to 60°C.

[0048] In another embodiment of this application, the stabilizer composition is in a basic liquid form, wherein at least one of components A, B and / or optional C is in liquid form.

[0049] In another embodiment of this application, the stabilizer composition may further include at least one other additive as component E. Therefore, this application also relates to a stabilizer composition comprising: (A) At least one hindered amine light stabilizer is component A; (B) At least one phenolic antioxidant is component B; (C) At least one ultraviolet absorber as component C; and (E) At least one other additive as component E.

[0050] In a preferred embodiment, the stabilizer composition comprises (or consists of): (A) At least one hindered amine light stabilizer A, comprising 20-60% by weight of the total stabilizer composition, preferably 30-55% by weight, more preferably 35-55% by weight, and typically 40-50% by weight; (B) At least one phenolic antioxidant B, comprising 1 to 30% by weight of the total weight of the stabilizer composition, preferably 2 to 25% by weight, more preferably 5 to 20% by weight, and typically 7 to 17% by weight; (C) At least one ultraviolet absorber C comprising 20-60% by weight of the total weight of the stabilizer composition, preferably 20-50% by weight, more preferably 25-45% by weight, and typically 30-43% by weight; (D) At least one diluent D comprising 0 to 59% by weight of the total stabilizer composition, preferably 0 to 48% by weight, more preferably 0 to 35% by weight, and typically 0 to 23% by weight; and (E) At least one other additive E, preferably 0-10% by weight, and typically 0-5% by weight, comprising 0-20% by weight of the total weight of the stabilizer composition. The sum of the contents of components A, B, C, D and E is 100% by weight of the total weight of the stabilizer composition.

[0051] In another preferred embodiment, the stabilizer composition comprises (or consists of): (A) At least one hindered amine light stabilizer A, comprising 20-60% by weight of the total stabilizer composition, preferably 30-55% by weight, more preferably 35-55% by weight, and typically 40-50% by weight; (B) At least one phenolic antioxidant B, comprising 1 to 30% by weight of the total weight of the stabilizer composition, preferably 2 to 25% by weight, more preferably 5 to 20% by weight, and typically 7 to 17% by weight; (C) At least one ultraviolet absorber C comprising 20-60% by weight of the total weight of the stabilizer composition, preferably 20-50% by weight, more preferably 25-45% by weight, and typically 30-43% by weight; (D) At least one diluent D comprising 1 to 30% by weight of the total stabilizer composition, preferably 1 to 20% by weight, more preferably 2 to 15% by weight, and typically 3 to 10% by weight; and (E) At least one other additive E, preferably 0-10% by weight, and typically 0.01-10% by weight, comprising 0-20% by weight of the total weight of the stabilizer composition; The sum of the contents of components A, B, C, D and E is 100% by weight of the total weight of the stabilizer composition.

[0052] Preferably, in the stabilizer composition of this application, the weight ratio of hindered amine light stabilizer A to antioxidant B is 10:1 to 1:5, more preferably 8:1 to 1:1, and even more preferably 6:1 to 1.5:1.

[0053] Preferably, in the stabilizer composition of this application, the weight ratio of hindered amine light stabilizer A to ultraviolet absorber C is 10:1 to 1:10, preferably 5:1 to 1:5, more preferably 2:1 to 1:2, and especially 1:1.5 to 1.5:1.

[0054] In one embodiment of this application, the stabilizer composition comprises or consists of the following components: (A) At least one hindered amine light stabilizer A, comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione. (B) At least one phenolic antioxidant B, comprising bis-(3,3-bis-(4′-hydoxy-3′-tert-butyl-phenyl)butanoic acid)glycolester; and (C1) At least one (2-hydroxyphenyl)-triazine ((2-hydroxyphenyl)- s Compound C1, comprising 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine (-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine) and 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine (2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine).

[0055] In another embodiment of this application, the stabilizer composition comprises or consists of the following components: (A) At least one hindered amine light stabilizer A, comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione. (B) At least one phenolic antioxidant B, comprising bis-(3,3-bis-(4′-hydoxy-3′-tert-butyl-phenyl)butanoic acid)glycolester; and (C2) At least one oxaloylaniline compound C2, including 2-ethoxy-4'-dodecyl-oxalanilide, preferably 2-ethoxy-4'-n-dodecyl-oxalanilide.

[0056] Hindered amine light stabilizer (component A) According to this application, the stabilizer composition comprises at least one hindered amine light stabilizer (HALS) represented by the following chemical formula (I) as component A: (I) R1, R2, R3 and R4 are each independently selected from alkyl groups having 1 to 12 carbon atoms, preferably alkyl groups having 1 to 8 carbon atoms, and more preferably alkyl groups having 1 to 4 carbon atoms; R5 and R6 are each independently selected from hydrogen and alkyl groups having 1 to 24 carbon atoms, preferably alkyl groups having 2 to 20 carbon atoms, and more preferably alkyl groups having 2 to 18 or 4 to 18 carbon atoms.

[0057] In one embodiment of this application, R1, R2, R3, and R4 are identical and selected from alkyl groups having 1 to 4 carbon atoms. Preferably, R1, R2, R3, and R4 are selected from methyl, ethyl, and propyl, more preferably methyl and ethyl. Typically, R1, R2, R3, and R4 are methyl.

[0058] In one embodiment of this application, one of R5 and R6 is a hydrogen atom, and the other is selected from an alkyl group having 1 to 24 carbon atoms, preferably an alkyl group having 2 to 20 carbon atoms, and more preferably an alkyl group having 4 to 18 carbon atoms.

[0059] In one embodiment of this application, R1, R2, R3 and R4 are selected from methyl, ethyl and propyl, more preferably methyl and ethyl; R5 is a hydrogen atom; R6 is selected from alkyl groups having 1 to 24 carbon atoms, preferably alkyl groups having 2 to 20 carbon atoms, more preferably alkyl groups having 4 to 18 carbon atoms.

[0060] Preferably, the hindered amine light stabilizer A comprises at least one compound represented by the following chemical formula (I)-1: (I)-1 R6 is an alkyl group having 1 to 24 carbon atoms, preferably an alkyl group having 2 to 20 carbon atoms, more preferably an alkyl group having 4 to 18 carbon atoms, and usually an alkyl group having 8 to 16 carbon atoms, for example 8, 10, 12, 14 or 16 carbon atoms, usually 10, 12 or 14 carbon atoms.

[0061] The particularly preferred hindered amine light stabilizer component A comprises or is composed of 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione, represented by the following chemical formula (I)-2: (I)-2.

[0062] Preferably, in the hindered amine light stabilizer (HALS) component A, the content of at least one hindered amine light stabilizer represented by formula (I) is at least 95% by weight, more preferably up to 100% by weight. In addition to the hindered amine light stabilizer represented by formula (I), component A may also include other hindered amine light stabilizers. Suitable examples of hindered amine light stabilizers include bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (CAS No. 52829-07-9); bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (CAS No. 41556-26-7); and bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate (CAS No. 129757-67-1). (CAS-No. 129757-67-1)); 2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro-20-(2,3-epoxypropyl)dispiro[5.1.11.2]-heneicosane-21-one (CAS No. 64338-16-5) (2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro-20-(2,3-epoxi-propyl) dispiro-(5.1.11.2)-heneicosane-21-one (CAS-No. 129757-67-1); The reaction products of 2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro-20-(2,3-epoxypropyl)dispiro[5.1.11.2]-heneicosane-21-one with epichlorohydrin, and mixtures thereof. However, in a particularly preferred embodiment, the hindered amine light stabilizer (HALS) component A is free from hindered amine light stabilizers other than those shown in formula (I), preferably free from hindered amine light stabilizers other than those shown in formula (I)-1, and more preferably free from hindered amine light stabilizers other than those shown in formula (I)-2.Accordingly, the stabilizer composition preferably contains only one hindered amine light stabilizer, 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione.

[0063] Preferably, the stabilizer composition comprises 20 to 60% by weight of at least one hindered amine light stabilizer A, more preferably 30 to 55% by weight, and typically 35 to 55% by weight, for example 40 to 50% by weight, based on the total weight of the stabilizer composition.

[0064] Phenolic antioxidants (component B) According to this application, the stabilizer composition comprises at least one phenolic antioxidant represented by the following chemical formula (II) as component B: (II) Among them, R x and R y Each is independently selected from straight-chain or branched alkyl groups having 1 to 10 carbon atoms, preferably branched alkyl groups, more preferably alkyl groups having 1 to 6 carbon atoms, and even more preferably alkyl groups having 1 to 4 carbon atoms; further preferably R x and R y One or both of them are tert-butyl; R z It is selected from hydrogen or alkyl groups having 1 to 10 carbon atoms, preferably alkyl groups having 1 to 6 carbon atoms, more preferably alkyl groups having 1 to 4 carbon atoms, such as alkyl groups having 1 to 3 carbon atoms; X is –O-(CH2) q -O- groups, wherein q is an integer from 1 to 12, preferably an integer from 2 to 6, for example an integer from 2 to 4; and p is 0 or an integer from 1 to 6, preferably an integer from 1 to 4, such as an integer from 1 to 2.

[0065] In a preferred embodiment, antioxidant B consists of one or more phenolic compounds represented by the following formula (II)-a: (II)-a The substituents and exponents are as defined in equation (II) above.

[0066] In a preferred embodiment, antioxidant B comprises (or preferably consists of) a phenolic compound represented by formula (II) (preferably formula (II)-a), wherein: R x and R yEach is independently selected from branched alkyl groups having 1 to 6 carbon atoms, more preferably branched alkyl groups having 1 to 4 carbon atoms; further preferably R x and R y One or both of them are tert-butyl; R z It is selected from hydrogen or alkyl groups having 1 to 4 carbon atoms, preferably alkyl groups having 1 to 3 carbon atoms; X is –O-(CH2) q -O- groups, wherein q is an integer from 2 to 6, preferably an integer from 2 to 4; and p is an integer from 1 to 4, preferably an integer from 1 to 2.

[0067] Preferred embodiments of antioxidant component B are also described in British Patent GB 1440391, comprising: bis[2,2-bis(4'-hydroxy-3'-methylphenyl)acetic acid] ethylene glycol ester, bis[2,2-bis(4'-hydroxy-3'-tert-butylphenyl)acetic acid] 1,4-butanediol ester (bis[2,2-bis(4'-hydroxy-3'-tert-butyl-phenyl) ethanoic acid] butanediol ester-(1,4)), and bis[2,2-bis(4'-hydroxy-3',5'-di-tert-butyl-phenyl)acetic acid] ethylene glycol ester (bis[2,2-bis(4'-hydroxy-3',5'-di-tert-butyl-phenyl) ethanoic acid] glycolester, bis[2,2-bis(4'-hydroxy-3',5-di-tert-butyl-phenyl)acetic acid] hexane-diol ester(1,6)), bis[3,3-bis(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid] butane diol ester(1,4)), bis[3,3-bis(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid] 1,12-dodecane diol ester(1,4) ester(1,12), bis[4,4-bis(4'-hydroxy-3',5'-di-tert-butyl-phenyl)pentanoic acid] glycol ester, bis[4,4-bis(4'-hydroxy-3'-tert-butyl-phenyl)pentanoic acid] 1,4-butanediol ester (bis[4,4-bis(4'-hydroxy-3',5'-di-tert-butyl-phenyl)pentanoic acid] glycol ester, bis[4,4-bis(4'-hydroxy-3'-tert-butyl-5'-bromo-phenyl)pentanoic acid] glycol ester, bis[3,3-bis(4'-hydroxy-3'-tert-butyl-5'-bromo-phenyl)butanoic acid] 1,3-2,2-dimethylpropanediol ester (bis[3,3-bis(4'-hydroxy-3-tert-butyl-phenyl)butanoic acid]2,2-dimethyl-propane-diol-1,3-ester, bis[3,3-bis(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid]glycol ester, bis[3,3-bis(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid]hexanediol-1,6ester, bis[3,3-bis(4'-hydroxy-3'-tert-butyl-phenyl)butanoic acid]hexanediol-1,6ester, bis[4,4-bis(4'-hydroxy-3'-tert-butyl-phenyl)pentanoic acid]glycol ester), bis[3,3-bis(4'-hydroxy-3'-tert-butyl-4'-bromophenyl)butanoic acid]glycol ester, and mixtures thereof.

[0068] In a preferred embodiment, antioxidant B comprises (or preferably consists of) a phenolic compound represented by formula (II)-1, namely bis-(3,3-bis-(4′-hydroxy-3′-tert-butyl-phenyl)butanoic acid) glycol ester (CAS No. 32509-66-3): (II)-1 Preferably, the stabilizer composition comprises 1 to 30% by weight of at least one phenolic antioxidant B, more preferably 2 to 25% by weight, and typically 5 to 20% by weight, for example 7 to 17% by weight, based on the total weight of the stabilizer composition.

[0069] Ultraviolet absorber (component C) The stabilizer composition of this application includes at least one ultraviolet absorber component C, wherein the ultraviolet absorber is selected from one or more (2-hydroxyphenyl)-triazine compounds and / or one or more oxaloylaniline compounds. Preferably, the ultraviolet absorber component C does not contain hydroxylated oxaloylaniline compounds.

[0070] Preferably, the content of at least one ultraviolet absorber C in the stabilizer composition is 20 to 60% by weight of the total weight of the stabilizer composition, more preferably 20 to 50% by weight, and typically 25 to 45% by weight, for example 30 to 43% by weight.

[0071] Component C1 In one embodiment, the ultraviolet absorber C comprises or is composed of one or more (2-hydroxyphenyl)-triazine compounds C1 represented by formula (III.1): (III.1) Among them, R a R b R c R d R e and R f Each is independently selected from hydrogen, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 4 oxygen atoms and having 1 to 20 carbon atoms, and combinations thereof.

[0072] Substituent R a R b R c and / or R d Preferably, the substituents R on each benzene ring are located in the meta position. Preferably, the substituents R on each benzene ring are... a R b R c and / or R d In this case, at least one is not hydrogen. More preferably, R a R b R c and R d Located at the meta position of each benzene ring, and none of them are hydrogen, i.e., R a R b R c and R d It is selected from alkyl groups having 1 to 20 carbon atoms, and alkoxy groups having 1 to 4 oxygen atoms and 1 to 20 carbon atoms.

[0073] In a preferred embodiment, the substituent R a R b R c and R dIt is an alkyl group having 1 to 20 carbon atoms, preferably an alkyl group having 1 to 12 carbon atoms, and more preferably an alkyl group having 1 to 4 carbon atoms. More preferably, the substituent R a R b R c and R d It is selected from methyl, ethyl or propyl, with methyl being more preferred, and located at the meta position of each benzene ring.

[0074] Substituent R e and / or R f Preferably, the substituent R on the benzene ring is located at the ortho and / or para position. Preferably, the substituent R on the benzene ring... e Or R f In this case, one is hydrogen. Preferably, the substituent R on the benzene ring is hydrogen. e Or R f In this context, one of the substituents R is hydrogen and the other is non-hydrogen. e Or R f Located at the para position of the benzene ring.

[0075] In a preferred embodiment, the substituent R on the benzene ring e Or R f In this group, one is hydrogen, and the other is a substituent R located at the para position of the benzene ring. e Or R f It is an alkoxy group containing 1 to 4 oxygen atoms (preferably 2 to 4) and having 1 to 20 carbon atoms (preferably 5 to 18 carbon atoms, more preferably 10 to 18). More preferably, the substituent R on the benzene ring... e Or R f In this group, one is hydrogen, and the other is a substituent R located at the para position of the benzene ring. e Or R f The substituent is C10~C18 alkoxy, and more preferably a substituent represented by the following formula (III.1)-a: (III.1)-a In yet another preferred embodiment, the ultraviolet absorber C comprises or is composed of one or more (2-hydroxyphenyl)-triazine compounds C1 represented by the following formula (III.1'): (III.1') Among them, R a R b R c and R d As defined above; R g It is selected from alkyl groups having 7 to 15 carbon atoms.

[0076] Preferred ultraviolet absorber C comprises or is composed of one or more (2-hydroxyphenyl)-triazine compounds C1 selected from compounds shown in formulas (III.1)-1, (III.1)-2 and combinations thereof:

[0077] (III.1)-1(III.1)-2 In a preferred embodiment of this application, the preferred ultraviolet absorber C comprises or is composed of a mixture of (2-hydroxyphenyl)-triazine compounds selected from the compounds shown in formulas (III.1)-1 and (III.1)-2 above. Preferably, in the ultraviolet absorber C, the mixing ratio of the compounds shown in formula (III.1)-1 and (III.1)-2 is about 1:5 to 5:1, more preferably 1:2 to 2:1, and especially 1:1.2 to 1.2:1.

[0078] Component C2 In another embodiment, the UV absorber C included in the stabilizer composition comprises or is composed of one or more oxaloylaniline compounds C2 represented by formula (III.2): (III.2) Among them, R 10 and R 11 Each is independently selected from alkyl groups having 1 to 20 carbon atoms, preferably alkoxy groups having 5 to 20 carbon atoms, containing 1 to 4 oxygen atoms and having 1 to 20 carbon atoms, and preferably containing 1 to 2 oxygen atoms and having 1 to 12 carbon atoms.

[0079] In a preferred embodiment, the substituent R 10 It is an alkyl group having 5 to 20 carbon atoms, more preferably 6 to 18, and usually 8 to 16; substituent R 11 It is an alkoxy group containing 1 to 2 oxygen atoms and having 1 to 12 carbon atoms, preferably having 1 to 6 carbon atoms.

[0080] For example, substituent R¹ 0 It is an alkyl group with 8 to 16 carbon atoms, usually 8, 10, 12, 14 or 16, for example 10, 12 or 14; substituent R 11 It is an alkoxy group containing one oxygen atom (preferably) and having 1 to 12 carbon atoms, preferably having 1 to 6 carbon atoms. For example, R 11 It is selected from methoxy, ethoxy, propoxy or butoxy.

[0081] According to this application, the substituent R 10 It is a straight-chain, branched, or cyclic alkyl group. Preferably, the substituent R 10 It is a straight-chain or branched alkyl group, more preferably a straight-chain alkyl group.

[0082] According to this application, the substituent R 11 It is a straight-chain, branched, or cyclic alkoxy group. Preferably, the substituent R 11 It is a straight-chain or branched alkoxy group, more preferably a straight-chain alkoxy group.

[0083] More preferably, the substituent R 10 It is a straight-chain or branched alkyl group with 10 to 16 carbon atoms (preferably 10 to 14, for example 10, 12 or 14); substituent R 11 It is an alkoxy group containing 1 to 2 oxygen atoms (preferably 1) and having 1 to 3 carbon atoms (preferably 1 or 2 carbon atoms).

[0084] The preferred ultraviolet absorber component C comprises or is composed of one or more oxaloylaniline compounds C2 selected from compounds shown in formula (III.2)-1 below and mixtures thereof: (III.2)-1 Another preferred ultraviolet absorber component C comprises or is composed of one or more oxaloylaniline compounds C2 selected from 2-ethoxy-4'-dodecyloxaloylaniline (hereinafter, formula (III.2)-2), 2-ethoxy-4'-(2-methyldecyl)oxaloylaniline (hereinafter, formula (III.2)-3), and mixtures thereof: (III.2)-2 (III.2)-3.

[0085] In a preferred embodiment, the ultraviolet absorber C comprises one of the above-mentioned oxaloylaniline compounds.

[0086] In a preferred embodiment of this application, the ultraviolet absorber C comprises (or consists of) an oxaloyl aniline compound C2 of formula (III.2)-2 (i.e., 2-ethoxy-4'-dodecyloxaloyl aniline), particularly 2-ethoxy-4'-n-dodecyloxaloyl aniline (i.e., oxaloyl aniline with a straight-chain dodecyl group).

[0087] Preferably, the ultraviolet absorber C is used in a substantially liquid form. The ultraviolet absorber C may be liquid itself or used in combination with a liquid diluent D, preferably at least one inert organic solvent. Suitable solvents are selected from commonly used inert polar or inert nonpolar organic solvents in the art. The aforementioned at least one inert organic solvent belongs to the liquid diluent D described in this application. For the purposes of this application, an inert solvent refers to a solvent that does not chemically react with any one of components A, B, C, D, and / or E at room temperature, preferably in the range of 10°C to 30°C, more preferably in the range of 0°C to 60°C; that is, a solvent that does not chemically react with any one of components A, B, C, D, and / or E within the aforementioned temperature range.

[0088] In one embodiment, the ultraviolet absorber C is used in combination with at least one inert solvent, specifically at least one inert polar organic solvent. Suitable polar organic solvents include ethers, ethylene glycol ethers, and especially methoxypropanol. The aforementioned at least one inert polar organic solvent belongs to the liquid diluent D described in this application.

[0089] In another embodiment, the ultraviolet absorber C is used in combination with at least one inert nonpolar organic solvent, preferably an aliphatic or aromatic hydrocarbon, such as petroleum ether, hexane, heptane, petroleum fractions, toluene, cyclohexane, mesitylene, or xylene. The aforementioned at least one inert nonpolar organic solvent belongs to the liquid diluent D described in this application.

[0090] Diluent (Component D) The stabilizer composition of this application may include one or more diluents D as optional components. Preferably, the content of at least one diluent D is 0 to 59% by weight, more preferably 0 to 48% by weight, more preferably 0 to 35% by weight, and typically 0 to 23% by weight, based on the total weight of the stabilizer composition. In some embodiments, the stabilizer composition includes 1 to 30% by weight of at least one diluent D, preferably 1 to 20% by weight, more preferably 2 to 15% by weight, and typically 3 to 10% by weight, based on the total weight of the stabilizer composition.

[0091] In one embodiment, the diluent D may be selected from solid inorganic powders such as talc, mica, dolomite, kaolin, silica, calcium carbonate, magnesium carbonate, titanium dioxide, iron oxide, zinc oxide, or carbon black. In one embodiment, at least one diluent D is calcium carbonate, specifically one or more selected from chalk, marble, limestone, precipitated calcium carbonate (PCC), coated precipitated calcium carbonate, heavy calcium carbonate (GCC) (especially heavy calcium carbonate based on chalk, marble, and / or limestone), and calcium carbonate coated with heavy calcium carbonate. For example, uncoated or coated precipitated calcium carbonate and / or heavy calcium carbonate (such as hydrophobically coated precipitated calcium carbonate and / or heavy calcium carbonate) may be used as diluent D. Suitable coating agents include, but are not limited to, fatty acids (such as stearic acid), succinic anhydride derivatives (such as alkenyl succinic anhydride), and alkylsilanes, or combinations of at least two of the above substances.

[0092] According to one embodiment of this application, the diluent D may be selected from a suitable liquid diluent, such as a suitable solvent or liquid plasticizer, which is preferably chemically inert to the components of the stabilizer composition (especially components A, B, and C). Therefore, the stabilizer composition of this application may include one or more liquid diluents as component D to provide a basic liquid stabilizer composition in the form of a solution, dispersion, emulsion, suspension, or paste, preferably in suspension form.

[0093] Preferably, the liquid diluent D is selected from suitable liquid diluents, such as suitable solvents, liquid additives, or mixtures thereof. Preferably, at least one liquid diluent D is selected from chemically inert solvents and liquid additives, which may optionally be present (or are typically present) in polymer compositions based on silyl-modified polymers (SMP).

[0094] In a preferred embodiment, the stabilizer composition includes a liquid diluent D that is at least one liquid additive and / or liquid solvent that may be present in a polymer composition based on a silyl-modified polymer, preferably at least one liquid diluent D used as an additive in a polymer composition based on a silyl-modified polymer.

[0095] More preferably, the stabilizer composition includes at least one liquid diluent D selected from liquid plasticizers, liquid thickeners, liquid catalysts, liquid dehydrating agents, liquid solvents, and mixtures thereof. Liquid dehydrating agents, liquid solvents, and mixtures thereof are particularly preferred.

[0096] Suitable liquid dehydrating agents include liquid vinyl silanes, particularly silanes containing vinyl-type unsaturated groups, such as vinyltrimethoxysilane (VTMO), vinyltriethoxysilane (VTEO), γ-methacryloyloxypropylmethyldimethoxysilane, and γ-acryloyloxypropylmethyltriethoxysilane. For example, dehydrating agent D4 is a vinyltrimethoxysilane (such as Evonik's Dynasylan® VTMO) and / or a vinyltriethoxysilane (such as Evonik's Dynasylan® VTEO). In one embodiment of this application, liquid diluent D includes (or consists of) at least one dehydrating agent, more preferably vinyltrimethoxysilane and / or vinyltriethoxysilane, and most preferably vinyltrimethoxysilane.

[0097] Suitable solvents include inert polar or inert nonpolar organic solvents commonly used in the art.

[0098] In one embodiment, the stabilizer composition includes at least one inert solvent, specifically at least one inert polar solvent. Suitable polar solvents include ethers, ethylene glycol ethers, and especially methoxypropanol.

[0099] In another embodiment, the stabilizer composition may include an inert nonpolar organic solvent, preferably an aliphatic or aromatic hydrocarbon, such as petroleum ether, hexane, heptane, petroleum fractions, toluene, cyclohexane, mesitylene, or xylene.

[0100] In one embodiment of this application, the stabilizer composition may be substantially free of solvents harmful to human health and / or the environment. According to one aspect of this application, the stabilizer composition may be substantially free of aromatic hydrocarbon solvents, such as toluene, mesitylene, or xylene. In one embodiment of this application, the stabilizer composition is substantially free of toluene. In one embodiment of this application, the stabilizer composition is substantially free of mesitylene. In one embodiment of this application, the stabilizer composition is substantially free of xylene. For the purposes of this application, the term "substantially free" means a content ≥ 1% by weight (based on the total weight of the stabilizer composition).

[0101] In a preferred embodiment of this application, the liquid diluent D includes (or consists of) at least one component selected from the following substances: at least one liquid plasticizer D1, at least one liquid dehydrator D4, at least one liquid solvent D5, and a mixture of the above compounds.

[0102] In yet another preferred embodiment, the liquid diluent D comprises (or consists of) at least one component selected from the following substances: at least one liquid dehydrating agent D4 (especially vinyltrimethoxysilane), at least one liquid solvent D5 (especially methoxypropanol and / or xylene), and a mixture of the above compounds.

[0103] Other additives (component E) The stabilizer composition of this application may also include one or more other additives E as optional components, such as common additives for stabilizer compositions and silane-modified polymer sealants and adhesives, in a content of 0 to 20% by weight, preferably 0 to 10% by weight, and typically 0 to 5% by weight, based on the total weight of the stabilizer composition. In some embodiments, the stabilizer composition includes 0.001 to 20% by weight of at least one other additive E, preferably 0.01 to 10% by weight, and typically 0.1 to 5% by weight, for example, 0.1 to 1% by weight, based on the total weight of the stabilizer composition. According to one embodiment of this application, the stabilizer composition does not contain any additional other additives E, i.e., the content of at least one other additive E is 0% by weight based on the total weight of the stabilizer composition.

[0104] Other additives E can be selected from commonly used additives, such as antistatic agents, flame retardants, softeners, nucleating agents, metal deactivators, bactericides, impact modifiers, pigments, fungicides, antibacterial agents, antifungal agents, and antiviral agents. Furthermore, one or more additives mentioned below as additive G can also be used in the stabilizer composition of this application, provided that additive E is different from liquid diluent D. Preferably, additive E is different from liquid diluent D, additive G, and filler F.

[0105] Method for preparing stabilizer composition This application also relates to a method for preparing the above-described stabilizer composition, the method comprising mixing components A, B, C, and optionally D and / or E. In one embodiment, mixing may be carried out by mixing components A, B, C, and optionally D and / or E in liquid form, specifically in the form of a solution, dispersion, emulsion, suspension, or paste, preferably a suspension or solution, especially a solution.

[0106] Preferably, the method for preparing the stabilizer composition of this application may include a step of grinding one or more of components A, B, C, and optionally E. Subsequently, components A, B, C, and optionally D and / or E are mixed. Preferably, the stabilizer composition can be obtained by a grinding step (such as micronization) to a particle size d. 50 A suspension of solid particles in the range of 10–1000 μm. The grinding step breaks up agglomerates and improves the dispersion uniformity of non-liquid components A, B, C, and optionally E.

[0107] In yet another embodiment, the method for preparing the stabilizer composition includes the step of dispersing or dissolving at least one solid component selected from components A, B, C, and optionally D and / or E in a liquid, wherein the liquid may be at least one liquid diluent D and / or one or more components A, B, C, or E in liquid form. For example, one or more components A, B, C, or E may be provided in a dispersed or dissolved form (e.g., in combination with liquid diluent D) and subsequently mixed with other components of the stabilizer composition.

[0108] Furthermore, this application also relates to the application of the aforementioned stabilizer composition as a stabilizer in sealants, adhesives, or a combination of sealants and adhesives based on silyl-modified polymers. Specifically, the stabilizer composition of this application is used to improve the UV resistance and heat resistance of sealants and adhesives based on silyl-modified polymers, that is, to improve their resistance to degradation of mechanical properties and / or surface optical properties under UV and / or heat exposure.

[0109] polymer composition Furthermore, this application also relates to a polymer composition based on a silyl-modified polymer, comprising the stabilizer combination described above, consisting of hindered amine light stabilizer A, phenolic antioxidant B, and ultraviolet absorber C. This application relates to a polymer composition comprising: (P) at least one polymer P selected from silyl-modified polymers; (S) Stabilizer combination S, which consists of the following components: At least one hindered amine light stabilizer A; At least one phenolic antioxidant B; At least one ultraviolet absorber C; At least one optional diluent D; and Optional at least one other additive E; Components A, B, C, D and E are as defined in the stabilizer composition of this application above; (F) At least one optional filler F; (G) At least one other additive G, preferably selected from plasticizer G1, thickener G2, catalyst G3, dehydrating agent G4 and rheology modifier G5.

[0110] In a preferred embodiment, this application relates to a polymer composition comprising (or preferably consisting of): (P) Based on the total weight of the polymer composition, 5 to 99% by weight of at least one polymer P selected from silane-modified polymers, preferably 10 to 80% by weight, more preferably 15 to 40% by weight; (S) Stabilizer combination S, which consists of the following components: Based on the total weight of the polymer composition, at least one hindered amine light stabilizer A is present in an amount of 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight; Based on the total weight of the polymer composition, at least one phenolic antioxidant B is present in an amount of 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight; Based on the total weight of the polymer composition, at least one ultraviolet absorber C is present in a concentration of 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight; Based on the total weight of the polymer composition, at least one diluent D is present in an amount of 0 to 3% by weight, preferably 0.01 to 2% by weight, more preferably 0.1 to 1.6% by weight; and Based on the total weight of the polymer composition, at least one other additive E is present in an amount of 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight; (F) at least one filler F, preferably 0 to 85% by weight, more preferably 1 to 70% by weight, based on the total weight of the polymer composition; and filler F is preferably selected from calcium carbonate; and (G) Based on the total weight of the polymer composition, 0 to 35% by weight of at least one other additive G, preferably 0 to 33% by weight, more preferably 1 to 30% by weight, wherein additive G is preferably selected from plasticizer G1, tackifier G2, catalyst G3, moisture scavenger G4 and rheology modifier G5; The sum of the contents of components P, S, F, and G is 100% by weight of the polymer composition.

[0111] In the presence of optional components F and / or G, the content of component P can be adjusted so that the sum of the contents of all components is equal to or does not exceed 100% by weight. If diluent D includes a liquid diluent D that can also be an active ingredient of additive G, the content of G can be reduced accordingly so that the total content of additive G remains within the above range.

[0112] The preferred embodiments of components A, B, C, D and E described above are also applicable to the polymer compositions of this application.

[0113] In a preferred embodiment of this application, the polymer composition comprises (or preferably consists of) the following components: (P) Based on the total weight of the polymer composition, 7.5 to 95% by weight of at least one polymer P selected from silane-modified polymers, preferably 12.5 to 72% by weight, more preferably 17 to 57% by weight; (S) Stabilizer combination S, which consists of the following components: Based on the total weight of the polymer composition, at least one hindered amine light stabilizer A is present in an amount of 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight; Based on the total weight of the polymer composition, at least one phenolic antioxidant B is present in an amount of 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight; Based on the total weight of the polymer composition, at least one ultraviolet absorber C, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight; at least one diluent D, preferably 0.01 to 2% by weight, more preferably 0.1 to 1.6% by weight, based on the total weight of the polymer composition; and Based on the total weight of the polymer composition, at least one other additive E is present in an amount of 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight; (F) 1 to 90% by weight of at least one filler F, preferably 20 to 80% by weight, more preferably 30 to 70% by weight, based on the total weight of the polymer composition; (G1) Based on the total weight of the polymer composition, 1 to 25% by weight of at least one plasticizer as other additive G1, preferably 5 to 25% by weight, more preferably 10 to 20% by weight; (G2) Based on the total weight of the polymer composition, 0.5 to 5% by weight of at least one tackifier as other additive G2, preferably 0.7 to 3% by weight, more preferably 0.8 to 2% by weight; (G3) Based on the total weight of the polymer composition, at least one catalyst is used as other additive G3, in a weight of 0.01 to 3% by weight, preferably 0.1 to 2% by weight, more preferably 0.2 to 1% by weight; (G4) Based on the total weight of the polymer composition, 0.5 to 5% by weight of at least one moisture scavenger as other additive G4, preferably 0.7 to 5% by weight, more preferably 0.8 to 3% by weight; (G5) Based on the total weight of the polymer composition, 0.5 to 5% by weight of at least one rheology modifier as other additive G5, preferably 0.7 to 5% by weight, more preferably 0.8 to 3% by weight; and (G) 0 to 10% by weight of at least one other additive G, different from G1 to G5, based on the total weight of the polymer composition.

[0114] In a preferred embodiment of this application, the sum of the contents of components P, S, F and G is 100% by weight, wherein the contents of components P and / or F can be adjusted in particular.

[0115] Specifically, the polymer composition of this application can be prepared using the stabilizer composition of this application described above. Specifically, based on the total weight of the polymer composition, the polymer composition includes 0.01 to 10% by weight of the stabilizer composition of this application, preferably 0.1 to 6% by weight, more preferably 0.2 to 3% by weight, and particularly 0.3 to 1.5% by weight.

[0116] According to one embodiment of this application, the polymer composition includes at least one stabilizer combination S, wherein the stabilizer combination S comprises: (A) At least one hindered amine light stabilizer A comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) At least one phenolic antioxidant B comprising bis(3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyrate) glycol ester; and (C) At least one ultraviolet absorber component C, The ultraviolet absorber component C is selected from the following components (C1), (C2), and combinations of components (C1) and (C2): C1) At least one (2-hydroxyphenyl)-triazine compound C1 comprising a mixture of 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine (2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine) and 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine); (C2) At least one oxaloaniline compound including 2-ethoxy-4'-dodecyl-oxaloaniline C2.

[0117] According to another alternative embodiment of this application, the polymer composition includes at least one stabilizer combination S, wherein the stabilizer combination S comprises: (A) At least one hindered amine light stabilizer A comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) At least one phenolic antioxidant B comprising bis(3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyrate) glycol ester; and (C) At least one ultraviolet absorber component C, The ultraviolet absorber component C includes or is composed of the following components: (C1) At least one (2-hydroxyphenyl)-triazine compound C1 comprising a mixture of 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and 2-[4-[(2-hydroxy-3-tetrateoxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine.

[0118] According to another alternative embodiment of this application, the polymer composition includes at least one stabilizer combination S, wherein the stabilizer combination S comprises: (A) At least one hindered amine light stabilizer A comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) At least one phenolic antioxidant B comprising bis(3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyrate) glycol ester; and (C) At least one ultraviolet absorber component C, The ultraviolet absorber component C includes or is composed of the following components: (C2) At least one oxaloaniline compound including 2-ethoxy-4'-dodecyl-oxaloaniline C2.

[0119] Silane-modified polymer P Typically, the silane-modified polymer P is selected from organic polymers, particularly organic polymers based on polyethers, polyurethanes, and / or acrylic polymers, having at least one, preferably two, terminal crosslinkable hydrolyzable silane groups. Preferably, the terminal crosslinkable hydrolyzable silane group is the only crosslinkable hydrolyzable silane group in the silane-modified polymer P.

[0120] Suitable silane-modified polymers include, for example, commercially available products such as Kaneka MS Polymers. ® (such as MS Polymer) ® S203H, MS Polymer ® S303H) or Evonik's Polymer ST, these are silane-modified polymers containing polyether and polyurethane segments; alternatively, Dow Chemical's VORASIL can be selected. ®The polymers sold are silane-modified polymers with a polyurethane backbone.

[0121] The polymerization methods for preparing silane-modified polymers are well known in the art, as described, for example, in US3971751 and EPA1288247.

[0122] Specifically, crosslinkable hydrolyzable silane groups can be represented by the following formula (PI): -SiY a R Q 3-a (PI) In the formula, R Q It is selected from alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 20 carbon atoms, and aralkyl groups having 7 to 20 carbon atoms; Y is a hydroxyl group or a hydrolyzable group; a is 1, 2, or 3; when there are two or more R Q When Y or Y, they can be the same or different.

[0123] For example, the hydrolyzable group Y can be selected from hydrogen, halogen atoms, alkoxy groups (preferably methoxy or ethoxy) having 1 to 20 carbon atoms, acyloxy groups, ketoxime groups, amino groups, amide groups, acid amide groups, aminooxy groups, and mercapto groups. Preferably, the hydrolyzable group Y is selected from alkoxy groups, especially methoxy and ethoxy groups.

[0124] The at least one silane-modified polymer P may include one or more silane-modified polyurethanes and / or silane-modified polyurethane / polyether copolymers containing at least one crosslinkable hydrolyzable silane group. Specifically, the silane-modified polyurethane polymer may be prepared, for example, by reacting an aromatic polyisocyanate (such as toluene diisocyanate, diphenylmethane diisocyanate, xylene diisocyanate) or an aliphatic polyisocyanate (such as isophorone diisocyanate, hexamethylene diisocyanate) with a polyol.

[0125] In a preferred embodiment, the at least one silane-modified polymer P comprises (or preferably consists of) at least one silane-modified polyether. Typically, the silane-modified polyether has a polyether backbone modified with at least one crosslinkable hydrolyzable silane group, more preferably with two terminal crosslinkable hydrolyzable silane groups. For example, the polyether backbone may include repeating units selected from ethylene oxide, propylene oxide, butane oxide, and / or polyphenylene ether. Furthermore, the polyether backbone may contain urethane bonds or urea bonds. Preferably, the polyether backbone of the silane-modified polyether includes ethylene oxide repeating units, wherein preferably at least 50% by weight, more preferably at least 70% by weight, and even more preferably at least 90% by weight, of the repeating units are ethylene oxide repeating units. Preferred silane-modified polyethers having two terminal crosslinkable hydrolyzable silane groups are described, for example, in US3971751 and US2002 / 198308.

[0126] In a preferred embodiment, the silane-modified polymer P is selected from the silane-modified polyethers represented by the following formula (P-II): (P-II) In the formula, Q1, Q2 and Q3 are independently selected from alkyl groups having 1 to 40, preferably 1 to 20, more preferably 1 to 4 carbon atoms, alkoxy groups (such as methoxy or ethoxy) having 1 to 10, preferably 1 to 4 carbon atoms, and acetoxy groups; provided that at least one of Q1, Q2 and Q3 is a crosslinkable hydrolyzable silane group, preferably selected from methoxy, ethoxy and acetoxy; n1 and n2 are independently integers from 0 to 1000, preferably 0 to 500, more preferably 0 to 300, and satisfy that n1+n2 is at least 50, preferably at least 100.

[0127] In a more preferred embodiment, the silane-modified polymer P is selected from the silane-modified polyethers shown in formulas (P-III) and (P-IV) below: (P-III) (P-IV) In the formula, n3 is an integer from 5 to 1000, preferably from 10 to 500, more preferably from 20 to 500, and even more preferably from 50 to 300.

[0128] Preferably, the molecular weight of the polyether backbone of the silane-modified polyether (as shown in formulas (PI) to (P-III)) is 500 to 30000 g / mol, more preferably 1000 to 15000 g / mol, and even more preferably 3000 to 12000 g / mol.

[0129] Preferably, one or more dimethoxysilyl-terminated polyethers (DMS MS) and / or trimethoxysilyl-terminated polyethers (TMS MS) are used as the silane-modified polymer P. More preferably, one or more dimethoxysilyl-terminated polyethers (DMS MS) are used as polymer P. Methyldimethoxysilyl-terminated polyether is even more preferred.

[0130] Typically, the molecular weight (especially the number average molecular weight) of the silane-modified polyether (preferably having two terminal crosslinkable hydrolyzable silane groups) used as polymer P is about 1,000 to 50,000 g / mol, preferably about 5,000 to about 40,000 g / mol, more preferably about 8,000 to about 35,000 g / mol, and even more preferably about 10,000 to about 30,000 g / mol.

[0131] Typically, the viscosity of the silane-modified polyether (preferably having two terminal crosslinkable hydrolyzable silane groups) used as polymer P is about 1 to about 50 Pa s, preferably about 3 to about 40 Pa s, more preferably about 5 to about 30 Pa s, and even more preferably about 7 to about 20 Pa s. Viscosity is usually determined using a Brookfield viscometer. For example, Brookfield viscosity (in mPa s) is measured at 24°C ± 3°C and 100 rpm using a Brookfield DV III Ultra viscometer with a suitable rotor (e.g., selected from the Brookfield RV rotor series, typically rotor #7) suitable for the viscosity range to be measured. Typically, the test is started at a constant speed of 100 rpm after the rotor is inserted into the sample. The reported Brookfield viscosity values ​​are those displayed 60 seconds after the start of the test.

[0132] In a preferred embodiment, the silane-modified polymer P comprises (or preferably consists of) at least one silane-modified polyether having two terminal methyldimethoxysilyl groups (e.g., Kaneka MS polymer). ® S203H and / or Kaneka MS polymer ® S303H).

[0133] Packing F Preferably, the polymer composition of this application includes at least one filler F, the content of which is 1 to 90% by weight, preferably 20 to 80% by weight, and more preferably 30 to 70% by weight, based on the total weight of the polymer composition.

[0134] Preferably, the at least one filler F is selected from wood flour, walnut shell powder, rice husk powder, pulp, cotton scraps, mica, graphite, diatomaceous earth, porcelain clay, kaolin, clay, talc, silica, fumed silica, precipitated silica, anhydrous silica, quartz powder, glass microspheres, calcium carbonate (such as chalk), magnesium carbonate, titanium dioxide, iron oxide, zinc oxide, carbon black, glass microspheres, glass fiber, and carbon fiber. Filler F may be one or a combination of two or more of the above fillers. Preferably, the at least one filler is selected from calcium carbonate, silica, carbon black, and combinations thereof. Suitable fillers are also described in US6077896 and EP1288247.

[0135] Preferably, the at least one filler F is calcium carbonate, particularly selected from chalk, marble, limestone, precipitated calcium carbonate (PCC), surface-treated precipitated calcium carbonate, heavy calcium carbonate (GCC) (especially GCC based on chalk, marble, and / or limestone), and one or more of surface-treated heavy calcium carbonate. For example, fatty acid-surface-treated PCC and / or GCC can be used as filler F. Preferably, filler F comprises (or preferably consists of) at least one calcium carbonate, particularly at least one fatty acid-surface-treated precipitated calcium carbonate.

[0136] Additive G In a preferred embodiment, the polymer composition of this application includes at least one additive G, which is selected from plasticizer G1, tackifier G2, catalyst G3, moisture scavenger G4, rheology modifier G5, and other additives commonly used in SMP sealants. Preferably, the polymer composition of this application includes at least one plasticizer G1, at least one tackifier G2, at least one catalyst G3, at least one moisture scavenger G4, and at least one rheology modifier G5 as additive G. Preferably, additive G is different from additive E and also different from filler F.

[0137] Typical additives of this type commonly used in SMP sealants and adhesives are described, for example, in US6077896, EP-A1288247 and US2003 / 105261.

[0138] Preferably, the polymer composition of this application includes at least one plasticizer G1, the content of which is 1 to 25% by weight of the total polymer composition, preferably 5 to 25% by weight, more preferably 10 to 20% by weight. Preferably, the at least one plasticizer G1 is selected from phthalate plasticizers (such as dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, diisoundecyl phthalate, butyl benzyl phthalate, dilauryl phthalate, dicyclohexyl phthalate), epoxy plasticizers (such as epoxidized soybean oil, epoxidized linseed oil, epoxidized benzyl stearate), and fatty acid esters (such as C4 to C4). 28 Alkyl esters and phenyl esters of fatty acids), polyester plasticizers made from dicarboxylic acids and diols, polyethers (such as polypropylene glycol and its derivatives), polystyrene (such as poly-α-methylstyrene, polystyrene), polybutadiene, butadiene-acrylonitrile copolymer, polychloroprene, polyisoprene, polybutene, chlorinated paraffin, etc.

[0139] Plasticizer G1 may be one or a combination of two or more of the above plasticizers.

[0140] Preferably, plasticizer G1 is free of phthalate compounds. Preferably, plasticizer G1 comprises (or preferably consists of) at least one C 10 To C 21 Phenyl alkyl sulfonates (such as Lanxess's Mesamoll product) ® ).

[0141] Preferably, the polymer composition of this application includes at least one tackifier G2, the content of which is 0.5 to 5% by weight, preferably 0.7 to 3% by weight, more preferably 0.8 to 2% by weight, based on the total weight of the polymer composition.

[0142] Preferably, the at least one tackifier G2 is selected from silane compounds having at least one additional functional group, such as amino, mercapto, epoxy, carboxyl, vinyl, isocyanate, isocyanurate, halogen, etc. Typically, tackifier G2 is selected from epoxysilanes and aminosilanes.

[0143] For example, tackifier G2 can be selected from: Silanes containing isocyanate groups, such as γ-isocyanate propyltrimethoxysilane, γ-isocyanate propyltriethoxysilane, γ-isocyanate propylmethyldiethoxysilane, and γ-isocyanate propylmethyldiethoxysilane. Amino-containing silanes, such as those selected from γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldiethoxysilane, γ-(2-aminoethyl)aminopropyltrimethoxysilane, γ-(2-aminoethyl)aminopropylmethyldimethoxysilane, γ-(2-aminoethyl)aminopropyltriethoxysilane, γ-(2-aminoethyl)aminopropylmethyldiethoxysilane, γ-ureopropyltrimethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, N-benzyl-γ-aminopropyltrimethoxysilane, and N-vinylbenzyl-γ-aminopropyltriethoxysilane; Silanes containing mercapto groups, such as γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropylmethyldimethoxysilane, and γ-mercaptopropylmethyldiethoxysilane; Silanes containing epoxy groups, such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, and β-(3,4-epoxycyclohexyl)ethyltriethoxysilane; Carboxysilanes, such as β-carboxyethyltriethoxysilane, β-carboxyethylphenylbis(2-methoxyethoxy)silane, and N-β-(carboxymethyl)aminoethyl-γ-aminopropyltrimethoxysilane; halogenated silanes, such as γ-chloropropyltrimethoxysilane; and Isocyanurate silanes, such as tris(trimethoxysilyl)isocyanurate.

[0144] In a preferred embodiment, the at least one tackifier G2 is selected from amino-containing silanes, particularly amino-containing trimethoxysilanes. Preferably, the at least one tackifier G2 comprises at least one amino-containing trimethoxysilane, preferably 3-aminopropyltrimethoxysilane (such as Evonik's Dynasylan). ® AMMO) or N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (such as Evonik's Dynasylan) ® DAMO).

[0145] Preferably, the polymer composition of this application includes at least one catalyst G3, the content of which is 0.01 to 3% by weight, preferably 0.1 to 2% by weight, and more preferably 0.2 to 1% by weight, based on the total weight of the polymer composition.

[0146] Typically, the at least one catalyst G3 is selected from silanol condensation catalysts known in the art. Suitable catalysts G3 are described, for example, in US6077896 and EP1288247.

[0147] Such condensation catalysts can be, for example, tetravalent tin compounds (such as dibutyltin dilaurate, dibutyltin diphthalate, dibutyltin diacetylacetone, dibutyltin diacetate, diethylhexanol dibutyltin, dibutyltin dioctanoate, monomethyl maleate dibutyltin, monoethyl maleate dibutyltin, monobutyl maleate dibutyltin, monoisooctyl maleate dibutyltin, monotetrazyl maleate dibutyltin, monobenzyl maleate dibutyltin, dibutyltin diacetate dioctyltin, dibutyltin diacetate, dibutyltin ... Dioctyltin fatty acid, dioctyltin dilaurate, dioctyltin monoethyl maleate, dioctyltin monoisooctyl maleate, dimethoxydibutyltin, bisnonylphenoxydibutyltin, dibutylenyltin oxide; divalent tin compounds (such as stannous octoate, stannous naphthenate, stannous stearate); titanates (such as tetrabutyl titanate, tetrapropyl titanate); organoaluminum compounds (such as aluminum triacetylacetonate, aluminum tri(ethylacetoacetate), aluminum diisopropoxyethylacetoacetate); chelating compounds (such as tetraacetylacetonate). Zirconium ketone, titanium tetraacetylacetone; lead octanoate; amine compounds (such as butylamine, octylamine, laurylamine, dibutylamine, monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, oleylamine, cyclohexylamine, benzylamine, diethylaminopropylamine, phenylenediamine, triethylenediamine, guanidine, diphenylguanidine, 2,4,6-tris(dimethylaminomethyl)phenol, morpholine, N-methylmorpholine, 2-ethyl-4-methylimidazolium, 1,8-diazabicyclo[5.4.0]undec-7-ene (DB) U) or its salts with carboxylic acids; reaction products and mixtures of amine compounds and organotin compounds (such as laurylamine-stannous octoate reaction products or mixtures); low molecular weight polyamide resins prepared from excess polyamines and polybasic acids; reaction products of excess polyamines and epoxy compounds; amino-containing silane coupling agents (such as γ-aminopropyltrimethoxysilane, N-(β-aminoethyl)aminopropylmethyldimethoxysilane); and other known silanol condensation catalysts, such as acidic catalysts and basic catalysts.

[0148] Catalyst G3 may be one or a combination of two or more of the above-mentioned catalysts.

[0149] Preferably, the at least one catalyst G3 is selected from tetravalent titanium organometallic compounds (such as diisopropoxytitanium diacetylacetonate) and / or tetravalent tin organometallic compounds (such as dialkyltin diacetylacetonate, dialkyltin phthalate). Such catalysts are available, for example, from TIB Chemicals. Preferably, catalyst G3 comprises at least one organotin compound, more preferably dibutyltin diacetylacetonate and / or dioctyltin diacetylacetonate (such as TIB KAT from TIB Chemicals). ® 223, dioctyltin diketoester.

[0150] Preferably, the polymer composition of this application includes at least one moisture scavenger G4, the content of which is 0.5 to 5% by weight, preferably 0.7 to 5% by weight, and more preferably 0.8 to 3% by weight, based on the total weight of the polymer composition.

[0151] Preferably, the moisture scavenger G4 is selected from vinyl silanes, especially silanes containing vinyl-type unsaturated groups, such as vinyltrimethoxysilane (VTMO), vinyltriethoxysilane (VTEO), γ-methacryloyloxypropylmethyldimethoxysilane, and γ-acryloyloxypropylmethyltriethoxysilane. For example, the moisture scavenger G4 is vinyltrimethoxysilane (VTMO) (such as Evonik's Dynasylan). ® VTMO) and / or vinyltriethoxysilane (VTEO) (such as Evonik's Dynasylan) ® VTEO).

[0152] The polymer composition may further include at least one rheology modifier G5, such as a thixotropic agent like polyamide wax, fumed silica, or hydrogenated castor oil. Preferably, the rheology modifier G5 is a polyamide wax (such as Arkema's Crayvallac). ® SLX).

[0153] In addition, the polymer composition may also include at least one other additive G, which is different from G1 to G5 and also different from A, B, and C, based on 0 to 10% by weight of the total polymer composition. For example, it may include compatibilizers, tackifiers, property modifiers, storage stabilizers, metal deactivators, anti-ozone agents, light stabilizers, heat stabilizers, phosphorus peroxide decomposers, lubricants, pigments (such as TiO2 and carbon black), foaming agents, flame retardants, and antistatic agents, each added in appropriate amounts.

[0154] In addition, this application also provides a method for preparing the polymer composition of this application, the method comprising mixing components P and S, and optionally F and / or G.

[0155] Various methods for preparing SMP sealants are known and described in the prior art. Typically, preparation methods involve mixing the components in any order and kneading the resulting mixture using a mixer, rollers, kneader, etc., under ambient or heated conditions. For example, compounds A, B, C, and optionally D, E, F, and / or G can be added to a silane-modified polymer P to ensure uniform dispersion and dissolution, adjusting heating and stirring conditions as needed. Alternatively, compounds A, B, C, and optionally D and / or E can be pre-mixed to form the stabilizer composition of this application, which is then added as stabilizer composition S, along with compounds F and / or G, to the silane-modified polymer P. Typically, the mixing of the components is carried out in known equipment, such as a kneader (planetary mixer) or a multi-shaft mixer with a vacuum and heating system. Furthermore, preparation methods may include dissolving one or more components in a suitable solvent before mixing the solutions, and using dispersion improvers if necessary.

[0156] Typically, SMP polymer compositions are prepared under conditions that isolate them from air and moisture, and are then directly filled into sealable containers (such as cartridges) after preparation.

[0157] The polymer compositions of this application prepared in the above manner can be used as one-component (often abbreviated as 1K or 1c) curable compositions. Such curable compositions can be obtained by preparing the polymer compositions of this application under substantially anhydrous conditions. When stored under sealed conditions, the composition can be stored stably for a long time; when exposed to the atmosphere, it cures rapidly from the surface.

[0158] The curable polymer compositions of this application are suitable for use as elastic sealants or adhesives in the field of construction engineering and industrial applications, and can also be used as coatings, adhesives, potting fillers, coating materials, etc.

[0159] Unless otherwise stated, all values ​​given in wt.-% refer to weight percentage, and all proportions are weight ratios. Unless otherwise stated, the term ppm (parts per million) refers to mg / kg.

[0160] The following embodiments and claims further illustrate this application. Detailed Implementation

[0161] Examples and comparative examples of preparations including the stabilizer composition of this application and the reference stabilizer composition.

[0162] 1. Raw materials For the preparation of the examples and comparative examples, the following components were used: a. Hindered amine light stabilizer (component A) HALS-1: 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione (CAS no.: 79720-19-7) HALS-2 The reaction product of bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate (CAS no.: 41556-26-7) and methyl1,2,2,6,6-pentamethyl-4-piperidyl sebacate (CAS no.: 82919-37-7).

[0163] HALS-3 The following substances are a mixture: bis(2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl) sebacate; 1,8-bis[(2,2,6,6-tetramethyl-4-((2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-decane-1,10-diacyl)piperidin-1-yl)oxy]octane (CAS No.: 129757-67-1) (1,8-bis[(2,2,6,6-tetramethyl-4-((2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-decan-1,10-dioyl)piperidin-1-yl)oxy]octane (CAS no.: 129757-67-1)) HALS-4 Polymer of 2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro-(5.1.11.2)heneicosan-21-one with epichlorohydrin (CAS no. 202483-55-4) HALS-5 Poly(4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol-alt-1,4-butanedioic acid) (CAS No. 65447-77-0) HALS-1 is the hindered amine light stabilizer described in this application. HALS-2 HALS-3 HALS-4 and HALS-5 It serves as a reference material and is commonly used as a hindered amine light stabilizer in polymer compositions.

[0164] b. Antioxidant (Component B) AO-1: Bis[3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyric acid] glycol ester (CAS No.: 32509-66-3) AO-2 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid C7-9 (branched) alkyl ester (CAS No.: 125643-61-0) AO-3 Pentaerythritol tetra(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) ester (CAS No.: 6683-19-8) AO-1 is the phenolic antioxidant described in this application. AO-2 and AO-3 It serves as a reference material and is commonly used as an antioxidant in polymer compositions.

[0165] c. Ultraviolet absorber (component C) UVA-1: 2-Ethoxy-4'-n-Dodecyloxaloylaniline (80% active ingredient by weight, containing 20% ​​xylene (component D)) UVA-2: A mixture of (2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine) and (2-[4-[(2-hydroxy-3-tetrazoloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine) (85% by weight of active ingredient, containing 15% by weight of 1-methoxy-2-propanol (component D)). UVA-3 The reaction product of α-3-(3-(2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionyl-ω-hydroxy poly(oxyethylene) and α-3-(3-(2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionyl-ω-3-(3-(2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionyloxy poly(oxyethylene) (active ingredient 85% by weight) (CAS No.: 104810-48-2) UVA-4 2-Ethyl-2'-ethoxyoxaloylaniline (CAS No.: 23949-66-8) UVA-5 : A mixture of branched and straight-chain C7-C9 alkyl esters of 3-[3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]propionic acid (CAS No.: 127519-17-9) UVA-6 2-(5-chloro-2H-benzotriazol-2-yl)-4-methyl-6-di-tert-butylphenol (CAS No.: 3896-11-5) UVA-1 and UVA-2 are the ultraviolet absorbers described in this application. UVA-3 UVA-4 UVA-5 and UVA-6 It serves as a reference material and is commonly used as a UV absorber in polymer compositions.

[0166] 1. Preparation of stabilizer composition The stabilizer composition of this application can be prepared by mixing components A, B, C and D according to the proportions shown in Table 1 below.

[0167] sheet:

[0168] The resulting compositions SC1 and SC2 are liquid stabilizer compositions and can be used directly as stabilizer composition S in polymer compositions.

[0169] 2. Preparation and testing of SMP test samples Use the following components: Component P SMP1: Silane-terminated polyether (Kaneka) ® S327, Kaneka) (silyl-terminated polyether) (Kaneka ® S327, Kaneka) Stabilizer composition S As shown in Tables 2, 3, 4, and 5.

[0170] packing component F F1: Stearic acid-treated heavy calcium carbonate (Omyabond) ® 120, Omia) Other components G:C 10 –C 21 Mesamoll ® Lanxess) G2: Tackifier, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (Dynasylan) ® DAMO (Degussa Evonik) G3: Catalyst, (3Z)-4-{[dioctyl({[(2Z)-4-oxopent-2-en-2-yl]oxy})tinalkyl]oxy}pent-3-en-2-one (TIB KAT 223, TIB Chemistry) G4: Moisture scavenger, vinyltrimethoxysilane (Dynasylan) ® VTMO (Degussa Evonik) G5: Rheology modifier, micronized polyamide wax (Crayvallac) ® SLX (Arkema) Add filler F1, polymer SMP1, plasticizer G1, and rheology modifier G5 to a steel planetary mixer cup according to the proportions shown in Table 2. Then add the stabilizer composition S components shown in Tables 3 and 4. Use a P&C Laborsystem planetary mixer with a double-disc impeller at 400 rpm, heat the oil bath to 80°C, and stir until the set temperature is reached. Then mix at 400 rpm for 30 minutes under full vacuum (pressure > 50 mbar). Maintain the vacuum, adjust the heating bath temperature to > 20°C, and reduce the stirring speed to 200 rpm. After the adhesive mixture cools to below 30°C, stop stirring and add tackifier G2, catalyst G3, and moisture scavenger G4 according to the proportions shown in Table 2. Then continue stirring at 200 rpm for 5 minutes under a 400 mbar vacuum.

[0171] The basic formula shown in Table 2 below is adopted: Table 2: Formula Overview, all quantities are in weight %

[0172] The amounts of each stabilizer composition S are shown in Tables 3 and 4.

[0173] Table 3. Amounts of stabilizer compositions in Examples 1, 2 and Comparative Examples 3 to 6 (unit: parts by weight, based on 100 parts by weight of polymer compositions in Table 2).

[0174] Examples 1 and 2 are embodiments of this application; Comparative Examples 3 to 6 are comparative examples.

[0175] Table 4 shows the amount of stabilizer compositions used in Comparative Examples 7 to 13, in parts by weight, based on 100 parts by weight of the polymer compositions in Table 2.

[0176] Comparative Examples 7 to 13 are comparative examples. The stabilizer composition in Comparative Example 7 is a commercially available product (Eversorb). ® HP1); Comparative Example 8 stabilizer composition was a commercially available product (Eversorb). ® HP3); Comparative Example 9 stabilizer composition was a commercially available product (Eversorb). ® HP4); Comparative Example 10 stabilizer composition was a commercially available product (Eversorb). ® HP5).

[0177] Table 5 shows the amount of stabilizer compositions used in Comparative Examples 14 to 21, in parts by weight, based on 100 parts by weight of the polymer compositions in Table 2.

[0178] Comparative examples 14 to 21 are comparative examples.

[0179] The surface cracking resistance and flexibility of each sample were determined using the following test methods, and the test results are summarized in Table 6 below.

[0180] Table 6 Results of surface cracking resistance and flexibility tests

[0181] The results show that the combined system of hindered amine light stabilizer, antioxidant and ultraviolet absorber of this application can significantly improve the surface cracking resistance and flexibility of the reference materials (comparative examples 3 to 21).

[0182] 3. Testing Methods Surface cracking resistance and flexibility test The UV stability (resistance to surface cracking) of the prepared SMP sealant samples was determined using a xenon lamp aging tester (WoM) according to ISO 4892-2:2013 standard. The cured samples were irradiated under UV light under the following cyclic conditions: drying for 102 minutes, followed by spraying with fresh deionized water for 18 minutes. The irradiation intensity was 60 W / m² (300–400 nm). The test was performed according to ISO 4892-2:2013, with a relative humidity of 50% and a temperature of 65℃±3℃ (black standard temperature). Observations were made every 500 hours for the first 1000 hours, visually inspecting for surface cracking. From 1000 hours onwards, observations were made every 250 hours, inspecting for surface cracking under no bending stress and performing flexibility tests under bending stress. From 2250 hours onwards, observations were made every 100 hours, again inspecting for surface cracking under no bending stress and performing flexibility tests under bending stress. When visible cracks are observed on the surface, the sample is considered to have failed. Surface cracking resistance is expressed in hours before failure. In the flexibility test, the sample is bent and visually observed. Failure is defined as when cracks penetrate into the material matrix (not just the surface). Flexibility is expressed in hours before failure. Both surface cracking resistance and flexibility are measured in hours before failure, and the results are shown in Table 6.

Claims

1. A stabilizer composition comprising: (A) At least one hindered amine light stabilizer A as shown in the following chemical formula (I): (I) In the formula, R1, R2, R3, and R4 are independently selected from alkyl groups having 1 to 12 carbon atoms; and R5 and R6 are independently selected from hydrogen and alkyl groups having 1 to 24 carbon atoms; (B) At least one phenolic antioxidant as component B, which is shown in the following chemical formula (II): (II) In the formula, R x and R y They are independently selected from straight-chain or branched alkyl groups having 1 to 10 carbon atoms; R z Selected from hydrogen or alkyl groups having 1 to 10 carbon atoms; X is –O-(CH2) q -O- groups, where q is an integer from 1 to 12; And p is 0 or an integer from 1 to 6; (C) At least one ultraviolet absorber component C, Wherein, the ultraviolet absorber component C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) At least one (2-hydroxyphenyl)-triazine compound as shown in formula (III.1) as component C1:  (III.1), In the formula, R a R b R c R d R e and R f The groups are independently selected from hydrogen, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms and containing 1 to 4 oxygen atoms, and combinations thereof; (C2) At least one oxaloyl aniline compound as shown in formula (III.2) as component C2: (III.2), In the formula, R 10 and R 11 They are independently selected from alkyl groups having 1 to 20 carbon atoms and alkoxy groups having 1 to 20 carbon atoms and containing 1 to 4 oxygen atoms; (D) Optionally, at least one diluent D; and (E) Optionally, at least one other additive E; The sum of the contents of components A, B, C, D and E is 100% by weight of the total weight of the stabilizer composition.

2. The stabilizer composition according to claim 1, wherein, The stabilizer composition comprises or consists of the following components: (A) 20 to 60% by weight of the at least one hindered amine light stabilizer A, based on the total weight of the stabilizer composition; (B) 1 to 30% by weight of the at least one phenolic antioxidant B, based on the total weight of the stabilizer composition; (C) 20 to 60% by weight of the at least one ultraviolet absorber C, based on the total weight of the stabilizer composition; (D) 0 to 59% by weight of the at least one diluent D, based on the total weight of the stabilizer composition; and (E) 0 to 20% by weight of at least one other additive E, based on the total weight of the stabilizer composition; The sum of the contents of components A, B, C, D and E is 100% by weight of the total weight of the stabilizer composition.

3. The stabilizer composition according to claim 1 or 2, wherein, The hindered amine light stabilizer A comprises at least one compound represented by the following chemical formula (I)-1: (I)-1 In the formula, R6 represents an alkyl group having 1 to 24 carbon atoms, preferably 2 to 18 carbon atoms.

4. The stabilizer composition according to any one of claims 1 to 3, wherein, The hindered amine light stabilizer A comprises 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione, as shown in the following chemical formula (I)-2: (I)-2。 5. The stabilizer composition according to any one of claims 1 to 4, wherein, The antioxidant B comprises a phenolic compound as shown in formula (II), wherein: R x and R y They are independently selected from branched alkyl groups having 1 to 6 carbon atoms; R z Selected from alkyl groups having 1 to 6 carbon atoms; X is –O-(CH2) q -O-, where q is an integer from 2 to 6; and p is an integer from 1 to 4.

6. The stabilizer composition according to any one of claims 1 to 5, wherein, The ultraviolet absorber C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) At least one (2-hydroxyphenyl)-triazine compound C1, selected from 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine as shown in formula (III.1)-1, 2-[4-[(2-hydroxy-3-tetrazoloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine as shown in formula (III.1)-2, and mixtures thereof: (III.1)-1 (III.1)-2; (C2) At least one oxaloylaniline compound C2, selected from compounds shown in formula (III.2)-1: (III.2)-1。 7. The stabilizer composition according to any one of claims 1 to 6, comprising: (A) at least one hindered amine light stabilizer A, comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) at least one phenolic antioxidant B, comprising bis[3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyric acid] glycol ester; and (C1) At least one (2-hydroxyphenyl)-triazine compound C1, comprising a mixture of 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and 2-[4-[(2-hydroxy-3-tetrateoxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine.

8. The stabilizer composition according to any one of claims 1 to 6, comprising: (A) at least one hindered amine light stabilizer A, comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) at least one phenolic antioxidant B, comprising bis[3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyric acid] glycol ester; and (C2) At least one oxaloyl aniline compound C2, which includes 2-ethoxy-4'-dodecyl oxaloyl aniline.

9. The stabilizer composition according to any one of claims 1 to 8, wherein, The stabilizer composition includes at least one organic solvent as diluent D, wherein the organic solvent is liquid in a temperature range of at least 0°C to 60°C.

10. A method for preparing the stabilizer composition according to any one of claims 1 to 9, wherein, Mix components A, B, C, and optional components D and / or E.

11. The use of the stabilizer composition according to any one of claims 1 to 9 as a stabilizer in sealants or adhesives based on silane-modified polymers.

12. A polymer composition comprising: (P) At least one polymer P, which is selected from silane-modified polymers; (S) Stabilizer combination S, which consists of the following components: At least one hindered amine light stabilizer A; At least one phenolic antioxidant B; At least one ultraviolet absorber C; Optionally, at least one liquid diluent D; and Optionally, at least one other additive E; Components A, B, C, D and E are as defined in claims 1 to 9; (F) Optionally, at least one filler F; (G) Optionally, at least one other additive G.

13. The polymer composition according to claim 12, wherein, The polymer composition comprises: (P) Based on the total weight of the polymer composition, 5 to 99% by weight of the at least one polymer P, which is selected from silane-modified polymers; (S) Stabilizer combination S, which consists of the following components: Based on the total weight of the polymer composition, 0.001 to 3% by weight of the at least one hindered amine light stabilizer A; The at least one phenolic antioxidant B, based on the total weight of the polymer composition, comprises 0.001 to 3% by weight. The at least one ultraviolet absorber C comprises, by weight, 0.001 to 3% of the total weight of the polymer composition; Based on the total weight of the polymer composition, 0 to 3% by weight of the at least one liquid diluent D; Based on the total weight of the polymer composition, 0 to 3% by weight of the at least one other additive E; (F) 0 to 85% by weight of at least one filler F, based on the total weight of the polymer composition; and (G) 0 to 35% by weight of at least one other additive G, based on the total weight of the polymer composition; The sum of the contents of components P, S, F and G is 100% by weight of the total weight of the polymer composition.

14. The polymer composition according to claim 12 or 13, wherein, The silane-modified polymer P is selected from the silane-modified polyethers represented by the following formula (P-II): (P-II) In the formula, Q1, Q2 and Q3 are independently selected from alkyl groups having 1 to 40 carbon atoms and alkoxy groups having 1 to 10 carbon atoms, provided that at least one of Q1, Q2 and Q3 is a crosslinkable hydrolyzable silane group; n1 and n2 are independently integers from 0 to 1000, provided that n1+n2 is at least 50.

15. The polymer composition according to any one of claims 12 to 14, wherein, The stabilizer combination S includes: (A) at least one hindered amine light stabilizer A, comprising 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidinyl)pyrrolidine-2,5-dione; (B) at least one phenolic antioxidant B, comprising bis[3,3-bis(4'-hydroxy-3'-tert-butylphenyl)butyric acid] glycol ester; and (C) At least one ultraviolet absorber component C, wherein... The ultraviolet absorber component C is selected from the following components (C1), components (C2), and combinations of components (C1) and components (C2): (C1) At least one (2-hydroxyphenyl)-triazine compound C1, comprising a mixture of 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and 2-[4-[(2-hydroxy-3-tetrateoxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine; (C2) At least one oxaloyl aniline compound C2, which includes 2-ethoxy-4'-dodecyl oxaloyl aniline.

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