Stabilizer composition for chlorine-containing polymers

Details Stabilizer composition for chlorine-containing polymers Stabilizer composition for chlorine-containing polymers

1975-11-14

1977-11-29

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106306, 106308Q, 252400A, 252400R, 260 25D, 260 4R, 260 17R, 260 174ST, 260 27R, 260 285D, 260 4214, 260 4244, 260 4249, 260 457R, 260 457P, 260 4575R, 260 4575W, 260 4575T, 260 4575K, C08L 9100

Patent

active

040605086

ABSTRACT:
A stabilizer composition for chlorine-containing polymers having a much reduced tendency to blow at the molding step, which comprises (A) an inorganic stabilizer having a power volume of at least 0.5 cc/g, said stabilizer (A) consisting essentially of at least one member selected from the group consisting of silicates of metals of Groups II and IV of the Periodic Table and composites of silicate acid with oxides, hydroxides and carbonates of said metals, and (B) an organic additive having a boiling point or decomposition point higher than a chlorine-containing polymer-processing temperature, said organic additive (B) being incorporated into the stabilizer (A) at a weight ratio (A) : (B) of 1 : at least 0.1 so that the pore volume ratio defined by the following formula: ##EQU1## WHEREIN PVc denotes the pore volume (cc/g) of the entire composition and PVa denotes the pore volume (cc/g) of said inorganic stabilizer (A),
is not higher than 0.8.

REFERENCES:
patent: 2179973 (1939-11-01), Alexander
Sarvetnick, "Polyvinyl Chloride", 1969, TP1180 v4852, p. 107.
Penn, "Polyvinyl Chloride", 1180 v48, pp. 53, 131, 133, 134, 135.

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