Highly crystallized, molded product of polyarylene thioether

Details Highly crystallized, molded product of polyarylene thioether Highly crystallized, molded product of polyarylene thioether

B - Operations, Transporting

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C

18/1180

B29C 71/02 (2006.01) B29C 55/00 (2006.01) B29C 67/24 (2006.01) B29C 71/00 (2006.01) C08G 75/02 (2006.01) C08J 5/18 (2006.01) C08J 7/02 (2006.01) D01F 6/76 (2006.01)

Patent

CA 1323168

ABSTRACT OF THE DISCLOSURE Disclosed herein is a highly crystallized, molded product of a polyarylene thioether resin, which is small in dimensional deformation and wavy wrinkles, high in heat-resistance and transparency and tough and is obtained by the process comprising g the steps of stretching a molded product mainly consisting of polyarylene thioether of the crystallization degree of not more than 15% in at least one direction at a stretching ratio of 2 to 5 times, making an organic solvent of a solubility parameter of 8 to 12 contact with the stretched, molded product at a temperature in the range of from the solidifying point of the solvent to 130°C, thereby preliminarily crystallizing the stretched, molded product until the increased portion of the crystallization degree becomes not less than 6% and then thermally treating preliminarily crystallized product at 140 to 300°C until the crystallization degree reaches not less than 22%.

562847

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