The present application provides a photopolymerization initiator having one or more ethylenic unsaturated bonds and one or more photopolymerization initiating functional groups in the molecule has been found. One or more kinds selected from an acrylamide group, an acrylate group, a vinyl group, an allyl group, a maleimide group, and the like can be suitably used as the ethylenic unsaturated bond, and a benzophenone compound having a specific structure can be suitably used as the photopolymerization initiating functional group.

The present application provides a photopolymerization initiator having one or more ethylenic unsaturated bonds and one or more photopolymerization initiating functional groups in the molecule has been found. One or more kinds selected from an acrylamide group, an acrylate group, a vinyl group, an allyl group, a maleimide group, and the like can be suitably used as the ethylenic unsaturated bond, and a benzophenone compound having a specific structure can be suitably used as the photopolymerization initiating functional group.

The present invention provides a composition comprising a polymer and a natural or synthetic peptide or protein (NSPP). The composition forms a hydrogel with water. The composition is useful as a filler for cosmetic and therapeutic applications. Embodiments of the invention provide methods of treating certain conditions using the composition or hydrogel, and surgical kits for the simultaneous or sequential administration of the respective components of the composition, enabling the formation of the hydrogel in situ.

The present invention provides a composition comprising a polymer and a natural or synthetic peptide or protein (NSPP). The composition forms a hydrogel with water. The composition is useful as a filler for cosmetic and therapeutic applications. Embodiments of the invention provide methods of treating certain conditions using the composition or hydrogel, and surgical kits for the simultaneous or sequential administration of the respective components of the composition, enabling the formation of the hydrogel in situ.

A hair fixative composition comprising a film forming polymer that is prepared from monomers comprising (a) 10-30% by weight of one or more copolymerizable comonomers selected from the group consisting of N-alkyl (meth)acrylamide wherein the alkyl group thereof contains from 2 to 12 carbon atoms, wherein for at least one of said copolymerizable comonomers the alkyl group contains from 5 to 12 carbon atoms; (b) 14-21% by weight of copolymerizable comonomers comprising acrylic acid and optionally one or more acidic copolymerizable comonomers selected from the group consisting of methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, and the (C.sub.1-C.sub.4)alkyl half esters of maleic and fumaric acids; and (c) 40-76% by weight two or more copolymerizable comonomers selected from the group consisting of (C.sub.1-C.sub.12)alkyl(meth)acrylates, wherein at least one of said two or more copolymerizable comonomers is a (C.sub.1-C.sub.2)alkyl(meth)acrylate; said film forming polymer being optionally completely or partially neutralized with a basic reagent.

A hair fixative composition comprising a film forming polymer that is prepared from monomers comprising (a) 10-30% by weight of one or more copolymerizable comonomers selected from the group consisting of N-alkyl (meth)acrylamide wherein the alkyl group thereof contains from 2 to 12 carbon atoms, wherein for at least one of said copolymerizable comonomers the alkyl group contains from 5 to 12 carbon atoms; (b) 14-21% by weight of copolymerizable comonomers comprising acrylic acid and optionally one or more acidic copolymerizable comonomers selected from the group consisting of methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, and the (C.sub.1-C.sub.4)alkyl half esters of maleic and fumaric acids; and (c) 40-76% by weight two or more copolymerizable comonomers selected from the group consisting of (C.sub.1-C.sub.12)alkyl(meth)acrylates, wherein at least one of said two or more copolymerizable comonomers is a (C.sub.1-C.sub.2)alkyl(meth)acrylate; said film forming polymer being optionally completely or partially neutralized with a basic reagent.

A self-healing polymer network containing a physical crosslinking agent, a composition therefor, and an optical element comprising the same is provided. The self-healing polymer network comprises a polymer derived from monomers including self-healing monomers each having a first polymerizable functional group and at least one of urethane, urea, or amide group chemically linked to the first polymerizable functional group, wherein the polymer has a backbone formed by polymerizing the first polymerizable functional groups of the self-healing monomers and a plurality of side groups each having at least one of urethane, urea, or amide group chemically linked to the backbone. In addition, the self-healing polymer network comprises a physical crosslinking agent which is an alcohol mixture having at least two of monool, diol, triol, and tetraol or the higher polyol and crosslinking the polymer by physically crosslinking the urethane, urea, or amide group of the side groups.

A self-healing polymer network containing a physical crosslinking agent, a composition therefor, and an optical element comprising the same is provided. The self-healing polymer network comprises a polymer derived from monomers including self-healing monomers each having a first polymerizable functional group and at least one of urethane, urea, or amide group chemically linked to the first polymerizable functional group, wherein the polymer has a backbone formed by polymerizing the first polymerizable functional groups of the self-healing monomers and a plurality of side groups each having at least one of urethane, urea, or amide group chemically linked to the backbone. In addition, the self-healing polymer network comprises a physical crosslinking agent which is an alcohol mixture having at least two of monool, diol, triol, and tetraol or the higher polyol and crosslinking the polymer by physically crosslinking the urethane, urea, or amide group of the side groups.

A self-healing polymer network containing a physical crosslinking agent, a composition therefor, and an optical element comprising the same is provided. The self-healing polymer network comprises a polymer derived from monomers including self-healing monomers each having a first polymerizable functional group and at least one of urethane, urea, or amide group chemically linked to the first polymerizable functional group, wherein the polymer has a backbone formed by polymerizing the first polymerizable functional groups of the self-healing monomers and a plurality of side groups each having at least one of urethane, urea, or amide group chemically linked to the backbone. In addition, the self-healing polymer network comprises a physical crosslinking agent which is an alcohol mixture having at least two of monool, diol, triol, and tetraol or the higher polyol and crosslinking the polymer by physically crosslinking the urethane, urea, or amide group of the side groups.

Disclosed is a fluorine-containing oligomer comprising a copolymer of a fluoroalkyl alcohol (meth)acrylic acid derivative represented by the general formula:

C.sub.nF.sub.2n+1(CH.sub.2CF.sub.2).sub.a(CF.sub.2CF.sub.2).sub.b(CH.sub.2CH.sub.2).sub.cOCOCR═CH.sub.2  [I]

wherein R is a hydrogen atom or a methyl group, n is an integer of 1 to 6, a is an integer of 1 to 4; b is an integer of 0 to 3; and c is an integer of 1 to 3; and a (meth)acrylic acid derivative represented by the general formula:

(CH.sub.2═CRCO).sub.mR′  [II]

wherein R is a hydrogen atom or a methyl group, m is 1, 2, or 3; and when m is 1, R′ is OH group, NH.sub.2 group that is unsubstituted or mono- or di-substituted with an alkyl group having 1 to 6 carbon atoms, or a monovalent group derived from an alkylene glycol or polyalkylene glycol group containing an alkylene group having 2 or 3 carbon atoms; when m is 2 or 3, R′ is a divalent or trivalent organic group derived from a diol or triol. The copolymerization reaction is performed using a hydrocarbon-based peroxide or azo compound polymerization initiator. Also disclosed are nano-silica composite particles formed as a condensate of the fluorine-containing oligomer and an alkoxysilane with nano-silica particles.