Smoke suppressant additive for halogenated polymer composition

Details Smoke suppressant additive for halogenated polymer composition Smoke suppressant additive for halogenated polymer composition

1989-07-10

1991-04-09

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106425, 106429, 524409, 524411, 524432, 524433, 423331, C08K 322, C04B 1430

Patent

active

050061747

ABSTRACT:
A smoke suppressant additive for halogenated polymer compositions which consists of a mixture of from 30 to 70% by weight of zinc oxide and from 70 to 30% by weight of caustic calcined magnesium oxide with the addition thereto of up to 20% by weight of finely divided silica based upon the total weight of the zinc oxide and magnesium oxide, the mixture having being subjected to calcination at a temperature in the range of from 700.degree. to 1100.degree. C. for a period of time of from 1 to 6 hours.
The additive is incorporated into halogenated polymers in an amount of from 0.5 to 10% by weight, preferably about 2.5% by weight.

REFERENCES:
patent: 4311635 (1982-01-01), Pearson
patent: 4360624 (1982-11-01), Huang et al.
patent: 4464502 (1984-08-01), Jacobs

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