Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1979-11-19
1982-02-02
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
260 458R, 525 6, B29F 100, B28B 124
Patent
active
043139035
ABSTRACT:
This disclosure is concerned with a process for injection molding polyethylene terephthalate into colder molds, i.e., less than 120.degree. C., and still obtaining crystalline parts by incorporating an organic imide containing compound having a melting point in excess of 240.degree. C. into the composition. The presence of this additive enhances the crystallization velocity of the composition and permits the achievement of crystalline parts with optimum properties with colder molds and shorter molding cycles than are conventional for polyethylene terephthalate molding compositions.
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Bayer Aktiengesellschaft
Czaja Donald E.
Harsh Gene
Pope Lawrence S.
Thompson W.
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