Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1994-03-28
1996-07-09
Mullis, Jeffrey
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528185, 528332, 528335, 528336, 528348, C08G 6900, C08G 6944
Patent
active
055346146
ABSTRACT:
A polyamide precursor of a polybenzazole polymer is prepared by reacting an aromatic bis(alkenyl)ester with a ring forming, aromatic diamine. The precursor can be prepared in an organic solvent for the monomers to form a soluble polyamide precursor which can be subsequently cyclocondensed to form a PBX polymer. A polybenzoxazole precursor is prepared by the reaction of a bis(alkenyl)ester and a bis(ortho-hydroxyamine). A polybenzazole polymer is easily prepared by heating the polyamide, PBX precursor.
REFERENCES:
patent: 3316213 (1967-04-01), Berr
patent: 3376257 (1968-04-01), Nakanishi et al.
patent: 3408336 (1968-10-01), Benson
patent: 3449296 (1969-06-01), Angelo et al.
patent: 3509108 (1970-04-01), Prince
patent: 3551389 (1970-12-01), Prince, Jr.
patent: 3560438 (1971-02-01), Burton et al.
patent: 3644288 (1972-02-01), Odier et al.
patent: 3852239 (1974-12-01), Bellmann et al.
patent: 4332883 (1982-06-01), Ahne et al.
patent: 4398009 (1983-08-01), Ahne et al.
patent: 4452972 (1984-06-01), Choe et al.
patent: 4533693 (1985-08-01), Wolfe et al.
patent: 4608427 (1986-08-01), Sweeny et al.
patent: 4772678 (1988-09-01), Sybert et al.
patent: 4845183 (1989-07-01), Mueller et al.
patent: 4847530 (1989-07-01), English et al.
patent: 4939215 (1990-07-01), Mueller et al.
patent: 4945153 (1990-07-01), Nishino et al.
Polymer Processing Technologies, edited by Fred W. Billmeyer, "Textbook of Polymer Science," Part 6, 3rd ed., pp. 455-521, (Jun. 1984), John Wiley.
O'Briem James J.
Woo Edmund P.
Mullis Jeffrey
The Dow Chemical Company
LandOfFree
Method for the preparation of amide oligomers and polybenzazole does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the preparation of amide oligomers and polybenzazole , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of amide oligomers and polybenzazole will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1868193