Resin coated substrate using a short-set, high-flow melamine-for

Details Resin coated substrate using a short-set, high-flow melamine-for Resin coated substrate using a short-set, high-flow melamine-for

1977-03-30

1978-10-31

Powell, William A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

260 294R, 428268, 428524, 428527, 428528, 428530, 528256, B32B 2742, C08G 1238

Patent

active

041235797

ABSTRACT:
A substrate is made for use as a top layer in a laminate; the substrate being impregnated with, and having a continuous film on its surface of, a dried, catalyzed, uncured resin, comprising the reaction product of 1 mole of melamine, about 1.8 moles to about 2.7 moles of uninhibited formaldehyde and about 0.05 mole to about 0.40 mole of urea; where the resin content of the substrate is between about 50 wt.% to about 85 wt.%, and the dried, continuous film on the substrate layer will cure within about 30 seconds to about 90 seconds, under pressures of between about 150 psi. to about 500 psi, without the formation of a discontinuous film.

REFERENCES:
patent: 2908603 (1959-10-01), Scott
patent: 3488310 (1970-01-01), McCombs
patent: 3496131 (1970-02-01), Bornmann
"Amino Resins" by Blais, Reinhold Pub. Co, 1959 pp. 19-20.

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