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:
Nov. 23, 1993
Filed:
Oct. 07, 1991
Philip L Taylor, Burnham, GB;
Julian J Gosling, Slough, GB;
Charles W Bromley, Bourne End, GB;
Peter F Nicks, Maidenhead, GB;
The Glidden Company, Cleveland, OH (US);
Abstract
A water-based autoxidizable coating composition, especially a gloss or partial gloss coating composition (e.g. paint, varnish, woodstain or timber preservative) suitable for application at ambient temperatures which comprises water, preferably organic cosolvent and a partially esterified carboxylic acid film-forming copolymer at least partially neutralized by monovalent cations wherein the copolymer contains added 3-allyloxy-2-hydroxypropyl groups or certain analogues derived from addition of allyl glycidyl ether or certain of its analogues to carboxylic acid groups, in a copolymeric backbone portion derivable from a prepolymer of weight average molecular weight less than 30 000. The partially esterified copolymer has an acid value of 25 to 60 and preferably a dynamic solution viscosity of 1 to 500 Pa.sec measured in 1-methoxy-2-hydroxy propane by oscillatory parallel plate rheometer. The coatings lap well, dry quickly and achieve acceptable water resistance. Also the optionally unneutralized copolymer and the coating composition when containing a minor amount of particulate copolymer which is found to improve gloss. Discoloration on ageing may be improved by neutralizing with Group 1 metal cations.