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:
May. 09, 1978
Filed:
Jan. 08, 1976
Nobuhiro Sakata, Ashiya, JA;
Toshihiro Suzuki, Yokohama, JA;
Nippon Sheet Glass Co., Ltd., BOTH OF, JA;
Nippon Pelnox Corporation, BOTH OF, JA;
Abstract
A surface hardening coating composition for cellulosic plastics, comprising as a hardening component a mixture consisting of (a) methylolmelamine with at least part of its methylol groups optionally alkyl-etherified and (b) 0.1 to 1.5 equivalents, per equivalent of the methylolmelamine, of an aliphatic or alicyclic compound having at least two functional groups capable of reacting with the methylol groups or alkyl ethers thereof, and/or a precondensation product between the components (a) and (b). Shaped articles of cellulosic plastics having superior abrasion resistance and flexibility can be prepared by coating the surface of a shaped article of cellulosic plastics with the above composition and baking the coated article at a temperature from 60.degree. C. to the heat distortion temperature of the article.