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. 26, 1980
Filed:
Nov. 20, 1978
Applicant:
Inventors:
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G93C / ; G93C / ;
U.S. Cl.
CPC ...
430152 ; 430290 ;
Abstract
Vesicular recording materials incorporate a sensitized layer comprising, as vehicle for the sensitizing agent, a quaternized polyelectrolyte, e.g. preferably polymers of dimethylamino ethyl methacrylate. The water sensitivity of the preferred polymers is reduced by copolymerisation with insolubilizing comonomers such as itaconic acid.