Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1982-01-13
1982-11-02
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
521130, 521181, 523218, 525502, C08G 804, C08G 1404
Patent
active
043574572
ABSTRACT:
The tetramethylol derivative of 4,4'iso-propylidenediphenol is dissolved in a solution of water and ethylene or propylene carbonate to yield concentrated solutions of the derivative in a form which may readily be used in the manufacture of foams or used as a liquid binder for molded ceiling products. Based on 100 parts by weight of the tetramethylol derivative, these solutions contain from about 15 to about 35 parts by weight of water and from about 5 to about 30 parts by weight of ethylene carbonate or propylene carbonate, with the total parts by weight of the water and carbonate varying from about 40 to about 45.
REFERENCES:
patent: 2912395 (1959-10-01), Graham
patent: 4033910 (1977-07-01), Papa
patent: 4112188 (1978-09-01), Dahms
patent: 4131582 (1978-12-01), Kako et al.
patent: 4260730 (1981-04-01), Sekamakos et al.
Armstrong World Industries Inc.
Foelak Morton
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