Howard X Green

US Patent:

41795512, Dec 18, 1979

Filed:

Oct 25, 1977

Appl. No.:

5/845058

Inventors:

Robert J. Jones - Hermosa Beach CA
Howard E. Green - Seal Beach CA
Sandra C. Quinlivan - Torrance CA

Assignee:

TRW, Inc. - Redondo Beach CA

International Classification:

C08F22606

US Classification:

526262

Abstract:

Polyimide prepolymers formed by thermo-reactions of an aliphatic bismaleimide, where the aliphatic group is a polyaliphatic ether, with an aromatic bismaleimide and/or an aromatic diamine in combination with a cross-linking agent having at least two vinyl groups provide compositions which are curable at low temperatures, i. e. , 65. degree. C. or less.

US Patent:

41737008, Nov 6, 1979

Filed:

Jun 21, 1978

Appl. No.:

5/917602

Inventors:

Howard E. Green - Seal Beach CA
Robert J. Jones - Hermosa Beach CA
Michael K. O'Rell - Manhattan Beach CA

Assignee:

TRW Inc. - Cleveland OH

International Classification:

C08G 7310

US Classification:

528125

Abstract:

End-capping an aromatic diamine or a precursor formed by reaction of an aromatic diamine with an aromatic dianhydride with difluoromaleic anhydride yields prepolymers which thermally cure at temperatures from about 150. degree. to about 200. degree. C. to form polymers which display long-term thermal stability at temperatures up to 300. degree. C. and more.

US Patent:

39519023, Apr 20, 1976

Filed:

Nov 18, 1974

Appl. No.:

5/524607

Inventors:

Robert J. Jones - Hermosa Beach CA
Howard N. Cassey - Long Beach CA
Howard E. Green - Los Angeles CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

C08G 1862
C08G 7310

US Classification:

260 37N

Abstract:

A compliant polyimide having superior thermal-mechanical properties can be produced by reacting an aromatic bis(furfurylimide) with an aliphatic ether bis(maleimide) via a Diels-Alder reaction. These polyimides display a long-term thermal-oxidative stability and a high percent recoverable elongation to break, and they are suitable for use as films, fibers, coatings, adhesives, structures, and sealants.

US Patent:

42699614, May 26, 1981

Filed:

Oct 15, 1979

Appl. No.:

6/084651

Inventors:

Robert J. Jones - Hermosa Beach CA
Howard E. Green - Seal Beach CA
Sandra C. Quinlivan - Torrance CA

Assignee:

TRW, Inc - Redondo Beach CA

International Classification:

C08F22606

US Classification:

526262

Abstract:

Polyimide prepolymers formed by thermo-reactions of an aliphatic bismaleimide, where the aliphatic group is a polyaliphatic ether, with an aromatic bismaleimide and/or an aromatic diamine in combination with a trismaleimide which are curable upon addition of an acid catalyst and/or heating to about 65. degree. C.

US Patent:

39535444, Apr 27, 1976

Filed:

May 10, 1974

Appl. No.:

5/468705

Inventors:

Robert J. Jones - Hermosa Beach CA
Howard E. Green - Los Angeles CA
Robert W. Vaughan - Manhattan Beach CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

C08F12002
C08F22600
C07C 6900
C07C 6952

US Classification:

526304

Abstract:

A low temperature curing polymeric adhesive composition may be made by reacting an amino alcohol having between 1 and 3 amino groups and between 2 and 5 hydroxyl groups with a stoichiometric amount of a carboxylic acid or derivative. Free radical catalysts and accelerators may be added to speed the cure of the adhesive. These adhesive resins can be cured at or near ambient room temperature and are highly desired for fabrication of bonded materials possessing long fatigue life because of reduced stresses that might be induced at higher cure temperatures. A generalized formula may be illustrated as follows: ##EQU1## WHERE R" may be hydrogen, alkyl, or cycloalkyl; R' may be hydrogen or alkyl; R is an alkyl; R. sub. 1 may be hydrogen, an alkyl, or phenyl; m is an integer from 1 to 3; and n is an integer from 1 to 2.