Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1999-04-14
2000-12-12
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528137, 528145, 528146, 544 69, 544 90, C08G 1406, C08G 804
Patent
active
061600792
ABSTRACT:
Arylamines with electron donating groups such as alkyl and alkoxy groups in the meta position on the aromatic ring change the polymerization temperature of the benzoxazine prepared therefrom and offer an opportunity for an additional crosslinking site (the para position on the aromatic amine can couple to a Mannich base generated by the opening of the oxazine ring of the benzoxazine or a methylene bridge generated by a degradation reaction). Naphthenic amines with an alkyl or alkoxy substituent on the 5.sup.th through the 8.sup.th carbon atom on the naphthalene ring can function similarly. The polymers for benzoxazines prepared from at least 10% substituted aromatic or naphthenic amines are useful due to low polymerization temperatures and higher Tg (glass transition temperature).
REFERENCES:
patent: 4501864 (1985-02-01), Higginbottom et al.
patent: 4507428 (1985-03-01), Higginbottom et al.
patent: 5543516 (1996-08-01), Ishida
Ishida Hatsuo
Sanders Daniel
Edison Polymer Innovation Corporation
Truong Duc
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