Method for producing molded article by powder slush molding a th

Details Method for producing molded article by powder slush molding a th Method for producing molded article by powder slush molding a th

1995-11-15

1998-11-24

Wilson, Donald R.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

264310, 26433117, 264143, 264302, 525194, 525240, 525934, B29C 4118, B29C 4104, C08L 2316, C08L 2308

Patent

active

058402292

ABSTRACT:
A method is described for producing a molded article by molding a thermoplastic elastomer powder having a sphere-reduced average diameter of 0.7 mm or less, a bulk specific gravity of at least 0.38 and a failing property of 20 second/100 ml or less, wherein the thermoplastic elastomer contains an elastomeric ethylene-.alpha.-olefin copolymer and a polyolefin resin and has a complex dynamic viscosity .eta.*(1) of 1.5.times.10.sup.5 poise or less when measured at 250.degree. C. at a frequency of 1 radian/sec., and a Newtonian viscosity index n of 0.67 or less, in which the Newtonian viscosity index n is calculated according to the following formula:

REFERENCES:
patent: 4689214 (1987-08-01), Richart et al.
patent: 5308699 (1994-05-01), Hikasa et al.
patent: 5308700 (1994-05-01), Hikasa et al.
patent: 5470900 (1995-11-01), Sasaki et al.
patent: 5585431 (1996-12-01), Igarashi et al.
Whelan, "Polymer Technology Dictionary", Chapman & Hill, New York, pp. 374-375, 400 (1994).

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