Additives for improved polyester and vinyl polymer compositions
AssigneeStandard Oil Company (Indiana)
InventorHarold R. Edwards, Jr.
Life of this patent
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Abstract
A reactive additive is disclosed to improve flexibility and toughness in polyester and vinyl aromatic polymeric compositions. The additive is formed as the reaction product of a polyfunctional acid or anhydride, a glycol, an unsaturated acid and a mono alcohol.
Claims11
A composition formed by reacting approximately equimolar amounts of (a) trimellitic acid or anhydride, (b) a dihydric alcohol containing from 2 to about 6 carbon atoms, and (c) an unsaturated acid or anhydride containing from 2 to about 6 carbon atoms and esterifying such reaction product with sufficient amounts of mono alcohol containing from 2 to about 18 carbon atoms to form a product with an acid number between about 0 and 30.
A composition prepared by (a) forming a first reaction product by reacting approximately equimolar amounts of trimellitic acid or anhydride and a dihydric alcohol containing from 2 to about six carbon atoms;
- (b) to such first reaction product adding sufficient amounts of monoalcohol containing from 2 to about 18 carbon atoms to form a second reaction product with an acid number between about 0 and 50;
- (c) to such second reaction product adding an approximately molar equivalent amount of an unsaturated acid or anhydride containing from 2 to about 6 carbon atoms;
- and (d) adding sufficient amounts of such monoalcohol to the resulting product to form a composition with an acid number between about 0 to 30.
Dependencies are inferred from the claim text.