Toughening reinforced epoxy composites with brominated polymeric

Details Toughening reinforced epoxy composites with brominated polymeric Toughening reinforced epoxy composites with brominated polymeric

1983-05-12

1985-10-29

Bleutge, John C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523445, 523468, 525527, 525423, 528102, 528103, C08G 5914, C08L 6304

Patent

active

045501297

ABSTRACT:
Cured polyfunctional epoxy resins including tris(hydroxyphenyl)methane triglycidyl ether are toughened by addition of polybrominated polymeric additives having an EE below 1500 to the pre-cure composition. Carboxy-terminated butadiene-acrylonitrile rubber is optionally present in the precure mixture as such or as a pre-formed copolymer with other reactants. Reinforced composites, particularly carbon-reinforced composites, of these resins are disclosed and shown to have improved toughness.

REFERENCES:
patent: 3218369 (1965-11-01), Hinkley
patent: 3367990 (1968-02-01), Bremmer
patent: 3452116 (1969-06-01), Schwarzer
Lee & Neville, Handbook of Epoxy Resins, McGraw-Hill Book Co., New York, N.Y., 1967, pp. 4-12 & 4-69.

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