Process for the production of white melamine-phenol-aldehyde res

Details Process for the production of white melamine-phenol-aldehyde res Process for the production of white melamine-phenol-aldehyde res

1979-08-27

1980-10-21

Schain, Howard E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 172, 260 38, 525504, 525506, 528138, 528141, 528155, 528158, 528163, C08G 1410

Patent

active

042295572

ABSTRACT:
Resins which are substantially white and resistant to yellowing are obtained by the addition of ammonium or alkali phosphates or ammonium or alkali borates during the production or processing of melamine-phenol-aldehyde resins in an aqueous basic medium, and by subsequently obtaining the resin by dehydration at a temperature of at least 70.degree. C.

REFERENCES:
patent: 2457738 (1948-12-01), Scott
patent: 2826559 (1958-03-01), Updegraff et al.
patent: 3070572 (1962-12-01), Oland et al.
patent: 3321551 (1967-05-01), Knutsson
patent: 3364167 (1968-01-01), Imai et al.
patent: 3464956 (1969-09-01), Petersen

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