Photosensitive resin composition
AssigneeNippon Paint Co., Ltd.
InventorsHisaichi Muramoto, Yusuke Ninomiya, Keizou Ishii, Shinichi Ishikura
Life of this patent
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Abstract
Disclosed is a photosensitive resin composition which has improved water developability and storage stability. The composition comprises (I) crosslinked resin particles prepared by a post-emulsion method from (a) a base resin having a glass transition temperature (Tg) of 0.degree. C. or less and a polymerizable double bond, (b) a monomer which, when polymerized, provides a resin in which Tg is 20.degree. C. higher than that of the base resin, or a resin in which Tg is 20.degree. C. higher than that of the base resin, (c) a polyvinyl compound, and (d) a polymerization initiator (II) a photopolymerizable unsaturated monomer, and (III) a photopolymerization initiator.
Claims16
A photosensitive resin composition consisting essentially of:
- 30 to 90 parts by weight, based on 100 parts by weight of the components (I), (II) and (III), of crosslinked resin particles having a particle size of less than several mm prepared by dispersing in an aqueous medium the following four components:
- (a) 60 to 90% by weight, based on the total amount of the components (a), (b) and (c), of a base resin having a glass transition temperature (Tg) of 0.degree. C. or less and a polymerizable double bond,
- (b) 0.9 to 30% by weight, of based on the total amount of the components (a), (b) and (c), of a monomer which, when polymerized, provides a resin in which Tg is 20.degree. C. higher than that of said base resin, or a resin in which Tg is 20 .degree. C. higher than that of said base resin,
- (c) 0.1 to 10% by weight, based on the total amount of the components (a), (b) and (c) of a polyvinyl compound, and
- (d) 0.1 to 3 parts by weight, based on 100 parts by weight of the total weight of the components (a), (b) and (c), of a polymerization initiator, components (a), (b), (c) and (d) having been heated to crosslink,
- (II) 5 to 70 parts by weight, based on 100 parts by weight of the components (I), (II) and (III), of a photopolymerizable unsaturated monomer, and
- (III) 0.01 to 10 parts by weight, based on 100 parts by weight of the components (I), (II) and (III), of a photopolymerization initiator.
Dependencies are inferred from the claim text.