Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1990-03-29
1991-11-26
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528212, 528422, 560301, C08G 8300
Patent
active
050683098
ABSTRACT:
Cyanate esters of 4,4'-[1,3-phenylenebis (1-methylethylidene)] 2,2',6,6'-R-bisphenol when properly catalyzed, can be cured at temperatures in the range of about 250.degree. to about 300.degree. F. to obtain percent cyclotrimerization of the cyanate ester groups of at least 80 percent.
REFERENCES:
patent: 4839442 (1989-06-01), Craig
Shimp David A.
Vanderlip Jeffrey T.
Anderson Harold D.
Hi-Tek Polymers, Inc.
Price Herbert P.
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