The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 1978
Filed:
Jun. 01, 1976
Applicant:
Inventors:
Patrick Terence McGrail, Ipswich, EN;
Stephen Richard Smith, Manningtree, EN;
Frederick Robert Bannister, Colchester, EN;
David Leonard Boutle, Maldon, EN;
Assignee:
Imperial Chemical Industries Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
96 8 / ; 428425 ; 428483 ; 428524 ; 427171 ; 427173 ; 427209 ; 4273 / ; 4274 / ; 427414 ;
Abstract
Polymeric subbing compositions for polyester photobase, especially polyethylene terephthalate films, comprising, a mixture of a polyurethane resin with a homopolymer or copolymer or a mixture of a homopolymer and a copolymer of an unsaturated cyclic carboxylic acid anhydride, preferably maleic anhydride or itaconic anhydride, in which the mixture contains up to 75% by weight of the anhydride polymer.