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:
Apr. 24, 1984
Filed:
Mar. 02, 1983
Applicant:
Inventors:
Stephen R Postle, Brentwood, GB;
Samuel B Kingston, Doddinghurst, GB;
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524494 ; 428325 ; 524492 ;
Abstract
Photochromic paint comprising a latex of an acrylate and/or a methacrylate polymer, the polymer particles of which constitutes 30 to 50% by weight of the latex and which has been prepared using a copolymerizable surfactant, there being dispersed in the latex photochromic glass beads of from 0.05 to 1.00 .mu.m in size and which comprises from 10 to 30% by weight of the latex, the total solids content of the latex being from 40 to 60% by weight. The paint may be coated on to any surface which will accept a water-based paint.