Thermally stable sulfur dioxide-ethylene-vinyl ester terpolymers and process for preparing same
First Claim
1. A sulfur dioxide-ethylene-vinyl ester terpolymer having improved thermal stability observed as a reduction in the level of malador of the terpolymer and/or an improvement in the color stability of the terpolymer, said terpolymer containing substantially uniformly distributed therein a thermal stability imparting amount of at least one inorganic oxygen-containing metal compound in which the metal is an alkali metal, alkaline earth metal or zinc.
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Abstract
Sulfur dioxide-ethylene-vinyl ester terpolymers exhibiting improved thermal stability are prepared by substantially uniformly incorporating therein a thermal stability-imparting amount of at least one inorganic oxygen-containing metal compound in which the metal is an alkali metal, alkaline earth metal or zinc.
10 Citations
20 Claims
- 1. A sulfur dioxide-ethylene-vinyl ester terpolymer having improved thermal stability observed as a reduction in the level of malador of the terpolymer and/or an improvement in the color stability of the terpolymer, said terpolymer containing substantially uniformly distributed therein a thermal stability imparting amount of at least one inorganic oxygen-containing metal compound in which the metal is an alkali metal, alkaline earth metal or zinc.
- 11. A process for imparting improved thermal stability to a sulfur dioxide-ethylene-vinyl acetate terpolymer observed as a reduction in the level of malodor of the terpolymer and/or an improvement in the color stability of the terpolymer which comprises incorporating substantially uniformly in said terpolymer a thermal stability-imparting amount of at least one inorganic oxygen-containing metal compound in which the metal is an alkali metal, alkaline earth metal or zinc.
Specification