Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-12-23
1991-01-08
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 97, 525122, 528 97, 528407, C08G 3924
Patent
active
049836722
ABSTRACT:
A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a 9,9-bis(hydroxphenyl)fluorene composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.
REFERENCES:
patent: 2934521 (1960-04-01), Masters et al.
patent: 2951825 (1960-09-01), Reinking et al.
patent: 3018262 (1962-01-01), Schroeder
patent: 3056762 (1962-10-01), Tringali
patent: 3216970 (1965-11-01), Conix
patent: 3298998 (1967-01-01), McConnell et al.
patent: 3546165 (1970-12-01), Morgan
patent: 3894112 (1975-07-01), Pagel
patent: 3894113 (1975-07-01), Pagel
patent: 4331582 (1982-05-01), Babayan
patent: 4430493 (1984-02-01), Rieder
patent: 4524181 (1985-06-01), Adam et al.
patent: 4612350 (1986-09-01), Parker
patent: 4684678 (1987-08-01), Schultz et al.
patent: 4707534 (1987-11-01), Schultz
patent: 4786668 (1988-11-01), Dewhirst
patent: 4786669 (1988-11-01), Dewhirst
patent: 4806618 (1989-02-01), Imai et al.
L. D. Bravenec et al., "Lightly Crosslinked Thermosets", 33 Int'l. SAMPE Symposium, Mar. 7-10, 1988, 1377.
S. C. Lin et al, "Epoxy Resins II . . . and Their Copolymers", J. Polym. Sci. 1979, 17, 3095.
C. S. Chen et al, "New Epoxy Resins I . . . System", J. Appl. Polym. Sci. 1982, 27, 1177.
C. S. Chen et al, "New Epoxy Resin II . . . Copolymers", J. Appl. Polym. Sci., 1982, 27, 3289.
Toughenable Epoxy Matrix Resins for Advanced Composites by Ronald S. Bauer; 18th International SAMPE Technical Conf., Oct. 7-9, 1986.
Epoxy Resin Systems for Use in High Performance Applications at Elevated Temperatures by Bauer et al; 32nd International SAMPE Symposium; Apr. 9-9, 1986.
Formulation and Characterization of Epoxy Resin Copolymer for Graphite Composites; NASA Contractor Report 166501; Fred L. Keck.
AF-563 Structural Adhesive Film; Scotch-Weld 3M; Introductory Data Mar. 1, 1988; 3M Aerospace Materials Department.
Low Flammability Epoxy Polymers Via 9,9-Bis(4,4'-Aminophenyl)Fluorene; Jeffrey C. Holloway; Aug. 1984.
(Kourteidse and Parker, 1979), Advanced Thermoset Resins for Fire-Resistant Composites, pp. 551-593 (1979).
Kourtides and Parker, Thermoset Resins for Fire Resistant Composites, pp. 586-588.
Kourtides and Parker, "Advanced Resin Matrices . . . " NASA Publication.
(NASA Technical Brief, Mar. 1984).
Almer Carl J.
Schultz William J.
Hoke Veronica P.
Minnesota Mining and Manufacturing Company
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