GB1463616A - Supports for photosensitive polymer coatings - Google Patents

Abstract

1463616 Printing plate supports comprising cured adhesive layers TEIJIN Ltd 2 April 1974 [2 April 1973] 14612/74 Heading C3P [Also in Division G2] A support for a photosensitive printing plate element comprises a flexible base-plate and an adhesive layer to which a layer of a photosensitive resin may be subsequently applied, said adhesive layer comprising a cured reaction product of (A), (B) and (C); (A), (B<SP>1</SP>) and (C); (B) and (C); (A) and (B<SP>1</SP>); or (B) and (B<SP>1</SP>) where (A), (B), (B<SP>1</SP>) and (C) are as follows: (A) a compound containing at least two epoxy groups in the molecule, (B) a compound containing a vinyl or α-alkylvinyl group and an epoxy group in the molecule and having a b.p. of at least 120‹ C., (B<SP>1</SP>) a compound as defined for (B) except that the epoxy group is replaced by an amino group, and (C) a curing agent for epoxy resins. Compound (A) may be a conventional epoxy resin. Compound (B) is suitably a glycidyl ester of acrylic or methacrylic acid, a glycidyl ether of an unsaturated alcohol, or an epoxy resin partially modified by reaction with (meth)acrylic acid. Compound (B<SP>1</SP>) is suitably the reaction product of compound (B) with a polyamine (e.g. hexamethylene diamine) or an amino-terminated polyamide resin. In examples the following photosensitive resin compositions are applied to supports of the invention: (a) an unsaturated polyester derived from fumaric acid, trimellitic anhydride and ethylene glycol; tetraethylene glycol diacrylate; benzoin methyl ether; and hydroquinone, (b) methyl methacrylate - methacrylic acid copolymer; tetraethylene glycol dimethacrylate; trimethylolpropane trimethacrylate; polyethylene glycol; benzoin ethyl ether; and methoxyhydroquinone, and (c) methylcellulose; triethylene glycol diacrylate; anthraquinone; and hydroquinone.