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Phenylquinoxaline copolymersThe preparation of a series of homopolymers and block and random type phenylquinoxaline copolymers is described together with their important characteristics and preliminary measurements of composite properties. Phenylquinoxaline homopolymers consisting of low, intermediate, and high molecular weight versions were prepared from the reaction of 3,3'-diaminobenzidine (DAB) and 3,3',4,4'-tetraaminobenzophenone (TAB), each with p-bis(phenylglyoxalyl)benzene as solutions (18% solids content) in a 1:1 mixture of m-cresol and xylene. Three random and three block copolymers were prepared from the reaction of various amounts of DAB and TAB with p-bis(phenylglyoxalyl)benzene. The copolymers were prepared with DAB to TAB distribution ratios of 3:1, 1:1, and 1:3. The work was performed primarily to determine if phenylquinoxaline copolymers exhibit any advantage over the homopolymers for use as functional or structural resins, especially as a matrix material in combination with a high-modulus graphite fiber reinforcement.
Document ID
19740039355
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hergenrother, P. M.
(Boeing Co., Aerospace Group, Seattle Wash., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Chemistry
Meeting Information
Meeting: Conference on Polymeric Materials for Unusual Service Conditions
Location: Moffett Field, CA
Start Date: November 29, 1972
End Date: December 1, 1972
Accession Number
74A22105
Funding Number(s)
CONTRACT_GRANT: NAS3-15547
Distribution Limits
Public
Copyright
Other

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