Stabilized chlorine-containing resin composition

Details Stabilized chlorine-containing resin composition Stabilized chlorine-containing resin composition

1989-07-19

1991-04-02

Hoke, Veronica P.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524399, 524436, 524450, C08K 1100

Patent

active

050047760

ABSTRACT:
A thermally stabilized chlorine-containing resin composition comprising a chlorine-containing resin and a stabilizer consisting essentially of (a) an overbased alkaline earth metal carboxylate or phenolate complex, (b) zeolite, (c) calcium hydroxide and (d) a complex of at least one metal perchlorate selected from the group consisting of sodium, magnesium, calcium and barium perchlorates with at least one compound selected from the group consisting of polyhydric alcohols and their derivatives. The stabilizer consisting essentially of the above four components (a) to (d) exhibits excellent effects in the prevention of the discoloration and the deterioration in physical properties of the chlorine-containing resin, both accompanying the thermal degradation caused when the resin is subjected to thermoforming, particularly powder molding or exposed to a high temperature atmosphere for a long period of time.

REFERENCES:
patent: 2968642 (1961-01-01), Le Suer
patent: 2971014 (1961-02-01), Mastin
patent: 3147232 (1964-09-01), Norman et al.
patent: 3533975 (1970-10-01), Scullin
patent: 4000100 (1976-12-01), Baldyga
patent: 4159973 (1979-07-01), Hoch et al.
patent: 4252698 (1981-02-01), Ito et al.
patent: 4659764 (1987-04-01), Isao et al.
patent: 4861816 (1989-08-01), Kobayashi et al.

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