Shaped articles of cellulosic plastics having abrasion-resistant

Details Shaped articles of cellulosic plastics having abrasion-resistant Shaped articles of cellulosic plastics having abrasion-resistant

1976-01-08

1978-05-09

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

260 173, 260 676R, 427390R, 427400, 428527, 428336, B32B 2308

Patent

active

040888070

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.

REFERENCES:
patent: 3135707 (1964-06-01), Nyquist et al.
patent: 3267174 (1966-08-01), Fry et al.
patent: 3959202 (1976-05-01), Blank

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