Video discs and molding compositions therefor

Details Video discs and molding compositions therefor Video discs and molding compositions therefor

1978-11-13

1980-12-23

Robinson, Ellis P.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

1791001B, 26099816, 3581285, 428 64, 428447, 428403, 428407, H04N 130, B32B 302

Patent

active

042411203

ABSTRACT:
A polyvinyl chloride based molding composition containing polymer grafted conductive carbon particles has good processability, low heat distortion temperature and good dispersion of the conductive particles and can be molded to form video discs of improved electrical properties.

REFERENCES:
patent: 2997451 (1961-08-01), Miller
patent: 3770667 (1973-11-01), Tucker
patent: 3833408 (1974-09-01), Matthies
patent: 3833541 (1974-09-01), Shen
patent: 3842194 (1974-10-01), Clemens
patent: 3842217 (1974-10-01), Clemens
patent: 3909517 (1975-09-01), Clemens
patent: 4129536 (1978-12-01), Martin
patent: 4151132 (1979-04-01), Khanna
Minoura, Yuji, "Graft Polymerization of Styrene with Carbon Black-Alkali Metal Complex", J. Applied Poly. Sci., 13, pp. 2057-2063 (1969).
Okita, K., J. Soc. of Rubber Ind. (Japan), 36, p. 361 (1963).

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