Dimer for synthesis of high performance polymer matrix composite

Details Dimer for synthesis of high performance polymer matrix composite Dimer for synthesis of high performance polymer matrix composite

1990-04-26

1991-08-20

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, C08G 802, C08G 6926

Patent

active

050415263

ABSTRACT:
An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'methylene dianiline. This dimer is then reacted with one of the following:

REFERENCES:
patent: 3708459 (1973-01-01), Lubowitz
Chemical & Engineering News; "Advanced Polymer Composites Tailored For Aerospace Use", pp. 37-57; Jul. 23, 1990.
35th International SAMPE Symposium, "A New PMR Addition Polyimide Having Improved Toxicity, Outlife and Processing Properties"; R. B. Baggett et al.; Apr. 2-5, 1990.
Federal Register, vol. 54, No. 91, 20715-20744 (May 12, 1989), Occupational Exposure to 4,4'Methylenedianiline (MDA); Proposed Rule.
National Institute for Occupational Safety and Health, Current Intelligence Bulletin 47 (Jul. 25, 1986), Publication No. 86-115.
National Toxicology Program Technical Report No. 360, Toxicology & Carcinogenesis Studies of N,N-Dimethylaniline.

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