Method of producing poly(arylene sulfide) compositions and articles made therefrom
AssigneePhillips Petroleum Company
InventorsTimothy W. Johnson, William H. Beever, James E. O'Connor, Jennings P. Blackwell
Life of this patent
Estimating the term…
Abstract
Compositions comprising a poly(arylene sulfide) which crystallizes to a fine-grained crystalline morphology are provided. A method is also provided for treating compositions comprising a poly(arylene sulfide) by incorporation of a crystalline morphology altering additive, heating the resulting mixture above the melting point of the poly(arylene sulfide) and cooling the mixture at a rate of less than 50.degree. C. per minute. Exemplary additives include a poly(arylene sulfide-ketone) and a polyaryl ketone.
Claims43
A method comprising the steps of:
- (a) blending a first poly(arylene sulfide)-containing composition together with an additive which is effective to achieve a crystalline morphology modification of said poly(arylene sulfide), said first poly(arylene sulfide)-containing composition and said additive forming a mixture;
- (b) heating said mixture to melt the poly(arylene sulfide) present in the poly(arylene sulfide)-containing composition;
- (c) further heating said mixture to at least 15.degree. C. above the temperature employed in step (b);
- and
- (d) cooling said mixture at a rate of less than about 50.degree. C. per minute thus forming a second poly(arylene sulfide)-containing composition.
A method comprising the steps of:
- (a) blending a first poly(arylene sulfide)-containing composition together with a polymer-containing additive which is effective to achieve a crystalline morphology modification of said poly(arylene sulfide) to form a mixture having 0.01 to 5 weight percent polymer additive based on the combined weights of polymer in said polymer-containing additive and poly(arylene sulfide);
- (b) heating said mixture to melt said poly(arylene sulfide);
- (c) further heating said mixture to at least 15.degree. C. above the temperature employed in step (b) and
- (d) cooling said mixture at a rate of less than about 50.degree. C. per minute thus forming a second poly(arylene sulfide)-containing composition.
A method for altering the crystalline morphology of a composition comprising a meltable poly(arylene sulfide) and fibrous material, said method comprising bringing together with said composition an additive effective for altering said crystalline morphology to form a mixture of said composition and said additive;
- heating said mixture above the melting point of said poly(arylene sulfide) and at least 15.degree. C. further;
- and cooling said mixture at a rate of less than about 50.degree. C. per minute to form a solid composition having an altered crystalline morphology.
A method of preparing a carbon fiber reinforced thermoplastic resin matrix, said matrix being comprised of poly(arylene sulfide) and a polyaryl ketone, said method comprising forming a mixture of said poly(arylene sulfide), polyaryl ketone and carbon fiber wherein said polyaryl ketone is present in an amount of from 0.01 to about 30 weight percent based on said poly(arylene sulfide);
- heating said mixture from about 25.degree. C. to about 75.degree. C. above the melting point of the poly(arylene sulfide) and then cooling said mixture at a rate of about 0.1.degree. C. to about 50.degree. C. per minute.
Dependencies are inferred from the claim text.