Process of making phenylene sulfide/biphenylene sulfide copolyme

Details Process of making phenylene sulfide/biphenylene sulfide copolyme Process of making phenylene sulfide/biphenylene sulfide copolyme

1990-07-23

1992-09-29

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642097, 26421112, 2642902, 26433111, 525535, 525537, B29C 5522, B29C 5526

Patent

active

051512351

ABSTRACT:
An improved pipe is produced from phenylene sulfide/biphenylene sulfide copolymers. The improved pipe has greater flexibility and ductility than pipe produced from normal PPS resin. Such pipe is produced by preparing a phenylene sulfide/biphenylene sulfide copolymer and forming the copolymer into essentially amorphous pipe by extrusion followed by rapid and uniform quench to avoid pipe crystallization. Such amorphous pipe also can be oriented by subsequent die extrusion.

REFERENCES:
patent: 3354129 (1967-11-01), Edmonds, Jr. et al.
patent: 3966688 (1976-06-01), Campbell
patent: 4274993 (1981-06-01), Narisawa et al.
patent: 4775571 (1988-10-01), Mizuno et al.

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