OLEFINIC THERMOPLASTIC ELASTOMER COMPOSITION FOR POWER MOLDING, POWDER FOR POWDER MOLDING AND MOLDED BODY

Title:

OLEFINIC THERMOPLASTIC ELASTOMER COMPOSITION FOR POWER MOLDING, POWDER FOR POWDER MOLDING AND MOLDED BODY

Document Type and Number:

Japanese Patent JPH11181179

Kind Code:

A

Abstract:

To obtain an olefinic thermoplastic elastomer composition for powder molding which hardly whitens on bending without difficulty and excellent in flexibility.

This olefinic thermoplastic elastomer composition for powder molding comprises an olefinic thermoplastic composition comprising 5-93 wt.% of a component (a) and 7-95 wt.% of a component (b) described below, and has a complex dynamic viscosity η* (1), measured at a vibration frequency of 1 radian/sec at 250°C, of 1.5×105 poise or less and a Newtonian viscosity index (n) of 0.67 or less calculated by the formula n={log η$x (1)-log ηx (100)}/2. A powder for powder molding comprises this composition and a molded body is obtained by subjecting the powder to powder molding. (a): a polyolefinic resin. (b): (b-1) and/or (b-2) described below. (b-1): a propylene-1-butene-based copolymer rubber. (b-2): a propylene-α-olefin-ethylene-based copolymer rubber.

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Inventors:

NAKATSUJI SHUKUYU
SUGIMOTO HIROYUKI
OTANI KOSUKE

Application Number:

JP35291297A

Publication Date:

July 06, 1999

Filing Date:

December 22, 1997

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