Disclosed is a resin including a structural unit represented by formula (I) and a structural unit represented by formula (a2-A), and a resist composition: ##STR00001## wherein R.sup.1 represents a hydrogen atom or a methyl group; L.sup.1 and L.sup.2 each represent —O— or —S—; s1 represents an integer of 1 to 3; s2 represents an integer of 0 to 3; R.sup.a50 represents a hydrogen atom, a halogen atom, or an alkyl group which may have a halogen atom; R.sup.a51 represents a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, an alkylcarbonyl group or the like; A.sup.a50 represents a single bond or *—X.sup.a51-(A.sup.a52-X.sup.a52).sub.nb—; A.sup.a52 represents an alkanediyl group; X.sup.a51 and X.sup.a52 each represent —O—, —CO—O— or —O—CO—; nb represents 0 or 1; and mb represents an integer of 0 to 4.

A composition for model materials (4a) is used for shaping an optically shaped article by an inkjet optical shaping method, comprises a monofunctional monomer (A) and an oligomer (B) as a photocurable component, further, comprises no polyfunctional monomer (C) as a photocurable component, or comprises a polyfunctional monomer (C) as a photocurable component at 3.0 parts by weight based on 100 parts by weight of a whole composition for model materials, the oligomer (B) has a hydroxyl group or an amino group, and a total molar fraction of the hydroxyl group and the amino group in a total amount of the photocurable components is less than 5.0%. The composition for model materials (4a) can afford an optically shaped article that has flexibility, and does not crack even when it is bent.

A composition for model materials (4a) is used for shaping an optically shaped article by an inkjet optical shaping method, comprises a monofunctional monomer (A) and an oligomer (B) as a photocurable component, further, comprises no polyfunctional monomer (C) as a photocurable component, or comprises a polyfunctional monomer (C) as a photocurable component at 3.0 parts by weight based on 100 parts by weight of a whole composition for model materials, the oligomer (B) has a hydroxyl group or an amino group, and a total molar fraction of the hydroxyl group and the amino group in a total amount of the photocurable components is less than 5.0%. The composition for model materials (4a) can afford an optically shaped article that has flexibility, and does not crack even when it is bent.

Provided are a polymer composition capable of achieving both thermal stability and thermal deterioration-resistant characteristics in a well-balanced manner, and a molded article and an optical member each containing the polymer composition. A polymer composition contains: a polymer including a structural unit derived from a (meth)acrylate and a structural unit derived from (meth)acrylic acid; and at least one compound (A) selected from the group consisting of 4-tert-butylcatechol, 6-tert-butyl-2,4-xylenol, paramethoxyphenol, hydroquinone, 2,2,6,6-tetramethylpiperidinyl-1-oxile, 4-hydroxy-2,2,6,6-tetramethylpiperidinyl-1-oxile, and triphenyl verdazyl. The content of compound (A) is 1 ppm by mass to 10 ppm by mass.

Provided is a polymer compound having a repeating unit represented by Formula 1A below:

##STR00001##

wherein in Formula 1A, Z.sup.1 represents a hydrogen atom or a monovalent group, R.sup.1 represents a group represented by Formula 1B, L.sup.1 represents a divalent group, n represents an integer of 1 or more, and in in Formula 1B, L.sup.2 represents a single bond or a divalent group, R.sup.2 represents a group selected from the group consisting of a hydroxy group and a group represented by *—OR.sup.3, R.sup.3 represents a hydrocarbon group which may have a hetero atom, a plurality of R.sup.3's may be bonded to each other to form a ring, * represents a bonding position, m represents an integer of 1 to 5, and a plurality of L.sup.1's and a plurality of R.sup.2's may be the same as or different from each other.

Provided is a polymer compound having a repeating unit represented by Formula 1A below:

##STR00001##

wherein in Formula 1A, Z.sup.1 represents a hydrogen atom or a monovalent group, R.sup.1 represents a group represented by Formula 1B, L.sup.1 represents a divalent group, n represents an integer of 1 or more, and in in Formula 1B, L.sup.2 represents a single bond or a divalent group, R.sup.2 represents a group selected from the group consisting of a hydroxy group and a group represented by *—OR.sup.3, R.sup.3 represents a hydrocarbon group which may have a hetero atom, a plurality of R.sup.3's may be bonded to each other to form a ring, * represents a bonding position, m represents an integer of 1 to 5, and a plurality of L.sup.1's and a plurality of R.sup.2's may be the same as or different from each other.

A long-persistent luminescence emitter containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein, 70 mol % or more of an electron donor structural unit and less than 30 mol % of an electron acceptor structural unit, or containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein. 70 mol % or more of an electron acceptor structural unit and less than 30 mol % of an electron donor structural unit. The emission decay after stopping light irradiation to the emitter is power law decay.

A polyacrylate macromolecular photoinitiator, a synthesis method therefor, and the use thereof. The polyacrylate macromolecular photoinitiator is free of a component having a molecular weight of less than 1000, and can effectively avoid the introduction of a material having a mall molecular weight in the photoinitiator and the odor and migration contamination produced thereby, the general formula thereof being as shown in formula I.

The present invention relates to a light-curing, reactive, pressure-sensitive adhesive film of adhesive. With the film of adhesive of the invention, structural bond strengths can be achieved. The film of adhesive comprises (a) at least one reactive monomer or reactive resin, (b) an initiator, (c) a photoredox catalyst, (d) a polymer of monomers comprising N-vinyl compounds and (e) a film-forming polymer.

The present invention relates to a light-curing, reactive, pressure-sensitive adhesive film of adhesive. With the film of adhesive of the invention, structural bond strengths can be achieved. The film of adhesive comprises (a) at least one reactive monomer or reactive resin, (b) an initiator, (c) a photoredox catalyst, (d) a polymer of monomers comprising N-vinyl compounds and (e) a film-forming polymer.