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:
Aug. 22, 1978
Filed:
Sep. 07, 1976
Applicant:
Inventor:
John Graham Allen, Runcorn, GB;
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
526-9 ; 20415914 ; 20415918 ; 260874 ; 9611 / ; 526 16 ; 526 50 ;
Abstract
Photosensitive polymeric compositions comprising a copolymer of (a) vinyl alcohol units and (b) vinyl ester units derived from the structure ##STR1## in which R is a divalent organic group, R.sup.1, R.sup.2 and R.sup.3 are organic substituents and X is an anion are disclosed. The ratio of (a) to (b) units is from 1:100 to 1000:1, units (a) and (b) together forming at least 80% of the copolymer. These copolymers are useful in forming films sensitive to ultra-violet radiation.