Pendant biphenylene as a cross-linking site in aromatic thermopl

Details Pendant biphenylene as a cross-linking site in aromatic thermopl Pendant biphenylene as a cross-linking site in aromatic thermopl

1987-05-07

1988-08-16

Pertilla, Theodore E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525397, 525462, 525471, C08L 7104

Patent

active

047645660

ABSTRACT:
Thermally stable polymers may be cross-linked by appending biphenylene moieties to the polymer backbone, then heating the modified polymer at a temperature in excess of about 300.degree. C. The cross-link density of the cured polymer can be controlled by varying the relative population of biphenylene moieties on the polymer backbone. Properties of the modified but uncured polymer are essentially the same as those in the original thermally stable polymer.

REFERENCES:
patent: 4197393 (1980-04-01), Swedo et al.
patent: 4269953 (1981-05-01), Brand
patent: 4414380 (1983-11-01), Swedo
patent: 4507462 (1985-03-01), Stille
Garapon & Stille, Macromolecules, 10, 627 (1977).
Recca & Stille, ibid., 10, 1344 (1977) & 11, 479 (1978).
Swedo and Marvel, J. Polymer Sci., Polymer Chem. Ed., 16, 2711 (1978).
Ibid, 15, 683 (1977) and 17, 2815 (1979).

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