325 results about "Thioxanthone" patented technology

Disclosed is an actinic ray curable ink-jet ink composition containing a photopolymerizable compound, a sulfonium salt (compound A) as a photoinitiator, which does not release benzene on actinic ray exposure, and a compound (compound B) as a sensitizing agent selected from the group consisting of (i) a polycyclic aromatic compound having a hydroxyl group, a substituted or unsubstituted aralkyloxy group or a substituted or unsubstituted alkoxy group, (ii) a carbazole derivative, and (iii) a thioxanthone derivative.

An object of the present invention is to provide an energy ray-curable ink composition which is excellent in curability and adhesion, and is also excellent in storage stability.

The present invention relates to an energy ray-curable ink composition comprising a coloring material; a polyfunctional monomer having three or more ethylenical double bonds in one molecule as a polymerizable compound; an α-aminoalkylphenone-based compound and a thioxanthone-based compound as photopolymerization initiators; and a hindered amine-based compound having a 2,2,6,6-tetramethylpiperidinyl group as an antigelling agent.

A polymerizable polymeric photoinitiator according to Formula (I):

wherein:

• • PL represents an n+m+p-functional polymeric core;
  • n and m independently represent an integer from 1 to 30;
  • p represents an integer from 0 to 10;
  • o is 0 or 1;
  • INI represents a group selected from the group consisting of a benzophenone, a thioxanthone, a carbazole, a anthraquinone, a camphor quinone, an α-hydroxyalkylphenone, an α-aminoalkylphenone, an acylphosphine oxide, a bisacyl phosphine oxide, an acylphosphine sulfide, a phenyl glyoxalate, a benzoin ether, a benzyl ketal, an α-dialkoxyacetophenone, a carbazolyl-O-acyl-oxime, an α-haloarylketone and an α-haloaryl sulfone;
  • L₃ and L₄ represent a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms;
  • A represents a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a methacryl amide, a maleate, a fumarate, an itaconate, an vinyl ether, an allyl ether, an allyl ester, a maleimide, a vinyl nitrile and a vinyl ester; and
  • R4 represents a substituted or unsubstituted alkyl group.

Radiation curable compositions containing the polymerizable polymeric photoinitiator and methods for preparing the polymerizable polymeric photoinitiator are also disclosed.

Provided is a photocurable ink jet recording ink composition having a low viscosity and excellent curing property and photopolymerization initiator solubility. The photocurable ink jet recording ink composition includes a polymerizable compound and a photopolymerization initiator. The polymerizable compound includes vinyl ether group-containing (meth)acrylic esters represented by Formula (I) in an amount of 20% by mass or more based on the total mass of the ink composition. The photopolymerization initiator includes a bisacylphosphine oxide photopolymerization initiator in an amount of 5% by mass or more based on the total mass of the ink composition and a thioxanthone photopolymerization initiator. The content ratio of the bisacylphosphine oxide photopolymerization initiator to the thioxanthone photopolymerization initiator is from 3:1 to 5:4.

The present invention provides an energy ray-curable ink composition excellent in the continuous discharge property, and excellent in curability and adherability. The present invention relates to an energy ray-curable ink composition which contains a coloring agent, contains only a monofunctional monomer having an acrylic equivalent of 300 or less, and having one ethylenic double bond in one molecule, and a polyfunctional monomer having an acrylic equivalent of 150 or less, and having two or more ethylenic double bonds in one molecule as a polymerizable compound, contains an α-aminoalkylphenone compound and a thioxanthone compound as a photopolymerization initiator, and contains a silicone compound having a polydimethylsiloxane structure as a surface conditioner.

It is an object of the present invention to provide a photo-curing ink composition having excellent curing properties while maintaining low viscosity and good preservation stability and to provide an ink jet recording method and an ink jet recording apparatus which can provide an image with high quality by using the ink composition. The photo-curing ink composition according to the present invention contains at least one of a compound having an allyl group and an N-vinyl compound as a polymerizable compound and contains at least one of thioxanthone and an amine as a polymerization accelerator. In the ink jet recording method and the ink jet recording apparatus according to the present invention, the photo-curing ink composition is used and the light irradiation starts 0.1 to 20 seconds after the discharge of the ink composition from a head to a recording medium.

The invention discloses an automotive UV (Ultraviolet) light-cured camouflage coating and a preparation method thereof. The camouflage coating comprises a UV light-cured resin, a reactive diluent, a camouflage paint composition, addition agents and a photoinitiator, wherein the UV light-cured resin is formed by four-functionality urethane acrylates and epoxy acrylates; the reactive diluent is formed by pentaerythritol tetraacrylate (PETA) and triethylene glycol divinyl ether (DVE-3); the addition agents comprise an accelerant, a coupling agent, a flatting agent, defoaming agent and extinction powder; the photoinitiator is formed by Irgacure651 and 2-chloridized thioxanthone. The camouflage coating disclosed by the invention has the characteristics of rapid curing speed, energy conservation, air pollution reduction, good adhesive force, high rigidity and the like.

The invention discloses an amphiphilic hyper-branched thioxanthone photoinitiator and a preparation method thereof. The small molecule photoinitiator thioxanthone and water-soluble methoxy polyethylene glycol containing epoxy group are introduced on a hyper-branched polymeric coinitiator polyethyleneimine by a method of ring-opening addition, thus preparing a novel amphiphilic hyper-branched polymeric photoinitiator thioxanthone. The polymeric photoinitiator thioxanthone can be used under a condition without a coinitiator, improves the photoinitiation efficiency of the thioxanthone, has excellent compatibility with many solvents and has excellent application prospect in the fields such as coating, micro-electron, food packaging and the like.

The UV curable ink jet recording ink composition contains a thioxanthone-based photopolymerization initiator and a hindered amine compound. The dissolved oxygen content in the ink composition is 20 ppm or less.

Benzophenone/thioxanthone derivatives useful as photoinitiators are provided as well as photopolymerizable compositions comprising the benzophenone/thioxanthone derivatives.

A thioxanthone-2-carboxylate as an optical trigger in the form of liquid used in optical polymerizing process features low extraction performance, low mobility and low volatility, and ca be used for paint and ink. Its preparing process is also disclosed.

A dual-curing, multi-component dental composition is described. The dental composition can include:

• • (a) one or more photopolymerizable monomers selected from the group consisting of acrylates and methacrylates;
  • (b) one or more photoinitiators, selected from the group consisting of alpha-diketones, benzoin alkyl ethers, thioxanthones, benzophenones, acylphosphinoxides, acetophenones, ketals, titanocenes, borates and sensitizing colorants;
  • (c) one or more molecular weight regulators selected from the group consisting of compounds which can be converted with a radical of a monomer of component (a), wherein the conversion takes place by abstraction of an H-radical from the molecular weight regulator in the allyl position;
  • (d) one or more polymerization inhibitors for increasing the storage stability of the composition;
  • (e) one or more inorganic fillers;
  • (f) one or more initiators for a chemical curing at ambient temperature, and if necessary one or more further additives. Related methods and uses are also described.

The invention relates to a preparation method of 2-isopropyl thioxanthone and derivatives thereof, comprising the following steps of: carrying out condensation reaction on a derivative of o-chlorobenzoic acid (C7H5ClO2) and a derivative of 4-isopropyl thiophenol (C9H12S) in an organic solvent, and carrying out dehydration cyclization reaction on condensation products under the catalysis of concentrated sulfuric acid. The 2-isopropyl thioxanthone prepared by the invention can be used as a high-efficiency radical II-type photo initiator. The invention has easy operation, low cost, environmental protection and high purity; the purity of the product can reach more than 99 percent; the product can be commercially prepared and produced on a large scale to meet the current ever-increasing market demand.

The invention relates to a methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant and a preparation method and application thereof. The methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant is synthesized with styrene, methacrylic acid and hydroxyethyl acrylate as monomers, and cerous chloride-2-isopropyl-thioxanthone complex, cerous chloride-anthraquinone complex or cerous chloride-diphenyl ketone complex as a photoinitiator through photo initiated radical copolymerization. The dispersant provided by the invention can have a good dispersion effect on inorganic powder and pesticide preparations, and can be compounded with a wetter to take good dispersion effect on pesticide water-borne preparations.

The invention relates to a method for preparing a patterned polymer brush, which belongs to the technical field of micro nano material preparation. The micron patterned polymer brush is obtained by fixing a thioxanthone photoinitiator containing coinitiator amine on the surface of a base material by covalent bond self-assembly technology, performing patterned photobleaching on the initiator through mask photoetching and performing photo-initiation monomer polymerization. The method is simple and effective, is suitable for large-scale preparation of various patterned polymer brushes, can prepare functional patterned polymer brushes and develops direction for potential application of the polymer brush.

The invention provides UV ink spraying white ink, which is prepared from the following ingredients in parts by mass: 30 to 70 parts of monomers, 5 to 15 parts of photoinitiators, 1 to 10 parts of resin and 20 to 50 parts of white color paste, wherein one or several kinds of materials of annular structure, hydroxyl, oxethyl, propyl group, amidogen and amino group are contained in the monomer structures; the photoinitiators are one or several kinds of materials from acyl phosphine oxide type photoinitiators, alpha-hydroxy-ketone type photoinitiators, alpha-aminoketone photoinitiators and thioxanthone type photoinitiators; the white color paste comprises pigments; the pigments are titanium dioxide. The UV white ink spraying white ink provided by the invention has high stability, and can stillrealize high stability after the aging for 7 days. The UV ink spraying white ink provided by the invention has good curing adhesion performance; in addition, the UV white ink spraying ink provided bythe invention has good whiteness and shielding rate; the problems of spray head blockage and ink interruption cannot occur.

Acid generator compounds are provided that are particularly useful as a photoresist composition component. Acid generator compounds of the invention comprise 1) a cyclic sulfonium salt and 2) a covalently linked photoacid-labile group. In one aspect, thioxanthone acid generator compounds are particularly preferred, including acid generator compounds that comprise (i) a thioxanthone moiety; and (ii) one or more covalently linked acid labile-groups.

The invention relates to a method for preparing a stimulating responsive polymer brush, in particular to a polymer brush which can modify a surface and has stimulating responsiveness to temperature, and belongs to the technical field of micro nano material preparation. The stimulating responsive polymer brush is obtained by performing surface cleaning on a substrate by using a mixed solution containing concentrated sulphuric acid and hydrogen peroxide, performing epoxy silane coupling agent self-assembly and performing graft by adopting a photoinitiator. The method fixes a thioxanthone photoinitiator containing coinitiator amine on the surface of a base material by self-assembly technology, prepares the polymer brush by surface photo-initiation polymerization, is simple in operation, has the initiator with high graft intensity, high efficiency and speed of initiation polymerization, can be widely suitable for monomers capable of performing photo-initiation polymerization, and has wide application prospect.

A holographic recording medium has a recording layer including a radical-polymerizable compound, a first photo-radical polymerization initiator (A) containing a titanocene compound, and a second photo-radical polymerization initiator (B) containing at least one compound selected from the group consisting of an amino acetophenone derivative, an acylphosphine oxide derivative, a benzyl derivative, and a thioxanthone derivative.

A photoinitiator composition comprising a combination of aminoalkyl phenone, thioxanthone and multifunctional amino benzoate synergist for use in printing inks and coatings that are curable using UV radiation, particularly from LED lamps.