Mold process for syndiotactic polypropylene

Details Mold process for syndiotactic polypropylene Mold process for syndiotactic polypropylene

1993-11-04

1996-04-23

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432818, 26433117, B29C 4573

Patent

active

055100759

ABSTRACT:
A molding process for syndiotactic polypropylene includes holding the melt at a process temperature of about 27.degree. to 77.degree. C. to achieve a cycle time of less than 150.degree. C. and a haze value for a 2 mm thick article of less than 38%.

REFERENCES:
patent: 4593062 (1986-06-01), Puydak et al.
patent: 4892851 (1990-01-01), Ewen et al.
patent: 5124404 (1992-06-01), Atwell et al.
patent: 5149484 (1992-09-01), Ealer
patent: 5200131 (1993-04-01), Asanuma et al.
patent: 5232992 (1993-08-01), Asanuma et al.

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