Flame-retarded thermosetting resin composition, prepregs and ele

Details Flame-retarded thermosetting resin composition, prepregs and ele Flame-retarded thermosetting resin composition, prepregs and ele

1993-07-28

1994-11-01

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 99, 528119, 528120, 528271, 528363, 528422, 560301, 558418, 558419, 558420, 558421, 428209, 4284228, 428457, 428901, C08G 8300

Patent

active

053608879

ABSTRACT:
A flame-retarded thermosetting resin composition is provided by blending about 5 to 45 mole % of a phenylcyanate having at least one halogen substituent at the ortho or para position relative to the cyanato group, and about 55 to 95 mole % of a halogen-free bis-4-phenylcyanate. A flame retardancy of V-O grade of UL94 is achieved in the thermoset resin of the composition without compromising dielectric, heat resistance, moisture absorption and other properties.

REFERENCES:
patent: 4097455 (1978-06-01), Burkhardt et al.
patent: 4996267 (1991-02-01), Gerth et al.
patent: 5045381 (1991-09-01), Suzuki et al.
patent: 5089660 (1992-02-01), Murray et al.
patent: 5276106 (1994-01-01), Portelli
Papathomas et al., "Triazine Networks Modified with Monofunctional Reactive . . . ". J. of App. Poly. Sci., vol. 44, No. 7, pp. 1267-1274.
IBM Technical Disclosure Bull, vol. 26, No. 7B, Dec. 1983, p. 3773.

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