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US 4,287,227 AGranted
Coating composition and process for producing synthetic resin moldings by using the same
AssigneeMitsubishi Rayon Co., Ltd.
InventorsKazumasa Kamada, Isao Sasaki, Kenji Kushi
Life of this patent
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Abstract
A coating composition comprising a monomer mixture of mono- or polypentaerythritol hving at least three (meth) acryloyloxy groups and at least one monofunctional acrylate or methacrylate having at least one ether bond in the molecule, a boiling point above 150.degree. C. under normal pressure and a viscosity below 20 centipoises at 20.degree. C., a photosensitizing agent, at least one silicon containing surface active agent and at least one organic solvent capable of forming a uniform solution upon mixing with the vinyl monomer mixture. Also disclosed is a process of coating surfaces with the coating compositions.
Claims13
A coating composition comprising
- (a) a monomer mixture of 30 to 90% by weight of at least one poly(meth)acrylate of mono or polypentaerythritol having at least three (meth)acryloyloxy groups in one molecule of formula (I) ##STR20## wherein at least three of X.sub.11, X.sub.12, X.sub.13, X.sub.22, X.sub.23, . . . X.sub.n.sbsb.2, X.sub.n.sbsb.3 and X.sub.14 are CH.sub.2 .dbd.CR--COO-- groups and the rest of them are --OH groups, n is an integer of 1 to 5 and R represents hydrogen or a methyl group, and 70 to 10% by weight of at least one monofunctional acrylate or methacrylate having at least one ether bond in one molecule, a boiling point above 150.degree. C. under normal pressure and a viscosity below 20 centipoises at 20.degree. C.;
- (b) 0.01 to 10 parts by weight of a photosensitizing agent per 100 parts by weight of said monomer mixture;
- (c) 0.0001 to 2.0 parts by weight per 100 parts by weight of said monomer mixture of at least one silicon containing surface active agent of the formula (II) or (III):
- ##STR21## wherein X is ##STR22## m and n are positive integers being smaller than 200 and x and y represent 0 or positive integers being smaller than 200 and satisfy the formula 0.1.ltoreq.(xn+yn/2m).ltoreq.10 and R.sub.1 represents --H or an alkyl, acyl or aryl group having 1 to 6 carbon atoms or ##STR23## wherein Y is ##STR24## m and n represent positive integers being smaller than 200, x and y represent 0 or positive integers being smaller than 200 and z represents 0 or a positive integer of 1 to 5 and satisfy the formula 0.1.ltoreq.(xn+yn/2m+n).ltoreq.10, R.sub.2 represents ##STR25## acyl or aryl group having 1 to 6 carbon atoms, and R.sub.3 represents --H or an alkyl, acyl or aryl group having 1 to 6 carbon atoms;
- and
- (d) 10 to 1900 parts by weight per 100 parts by weight of said monomer mixture of at least one organic solvent capable of forming a uniform solution upon mixing with said monomer mixture.
3 more elements
A process for producing synthetic resin moldings high in abrasion resistance and surface smoothness, which comprises applying a coating composition comprising:
- (a) a monomer mixture of 30 to 90% by weight of at least one poly(meth)acrylate of mono or polypentaerythritol having at least three (meth)acryloyloxy groups in one molecule of the formula (I) ##STR26## wherein at least three of X.sub.11, X.sub.12, X.sub.13, X.sub.22, X.sub.23, . . . X.sub.n.sbsb.2, X.sub.n.sbsb.3 and X.sub.14 are CH.sub.2 .dbd.CR--COO-- groups and the rest of them are --OH groups, n is an integer of 1 to 5 and R represents hydrogen or a methyl group, and 70 to 10% by weight of at least one monofunctional acrylate or methacrylate having at least one ether bond in one molecule, a boiling point above 150.degree. C. under normal pressure and a viscosity below 20 centipoises at 20.degree. C.;
- (b) 0.01 to 10 parts by weight of a photosensitizing agent per 100 parts by weight of said monomer mixture;
- (c) 0.0001 to 2.0 parts by weight per 100 parts by weight of said monomer mixture of at least one silicon containing surface active agent of the formula (II) or (III):
- ##STR27## wherein X is ##STR28## m and n are positive integers being smaller than 200 and x and y represent 0 or positive integers being smaller than 200 and satisfy the formula 0.1.ltoreq.xn+yn/2m.ltoreq.10 and R.sub.1 represents --H or an alkyl, acyl or aryl group having 1 to 6 carbon atoms or ##STR29## wherein Y is ##STR30## m and n represent positive integers being smaller than 200, x and y represent 0 or positive integers being smaller than 200 and z represents 0 or a positive integer of 1 to 5 and satisfies the formula 0.1.ltoreq.(xn+yn)/2m+n.ltoreq.10, R.sub.2 represents ##STR31## acyl or aryl group having 1 to 6 carbon atoms, and R.sub.3 represents --H or alkyl, acyl or aryl group having 1 to 6 carbon atoms;
- and
- (d) 10 to 1900 parts by weight per 100 parts by weight of said monomer mixture of at least one organic solvent forming a uniform solution by mixing with said monomer mixture
- to coat the surface of a synthetic resin molding and then irradiating with actinic radiation in air to form a hard, cross-linked film on the surface of the synthetic resin molding.
4 more elements
Dependencies are inferred from the claim text.