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US 5,312,854 AGranted
Color-stabilizing polyarylene sulfide mixture
AssigneeBayer Aktiengesellschaft
InventorsUdo Wolf, Burkhard Kohler, Alfred Zembrod, Klaus Kraft, Helmut Gorner
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Abstract
The invention relates to a mixture of PPS and colophony which shows improved color stability during processing at high temperatures.
Claims4
A mixture consisting essentially of
- a) 80 to 99.98% polyarylene sulfide and
- b) 0.02 to 20% of an acid or a mixture of acids having the following basic structure ##STR2## with at least one conjugated double bond system being present in the region marked by chain lines, or esters, salts or amides thereof.
Dependencies are inferred from the claim text.