Thermoplastic elastomer powder composition for powder molding, p

Details Thermoplastic elastomer powder composition for powder molding, p Thermoplastic elastomer powder composition for powder molding, p

1992-10-07

1996-12-17

Seccuro, Jr., Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524430, 524437, 524496, 524528, 525193, 525194, 525239, 525240, C08K 304, C08K 322, C08K 326

Patent

active

055854311

ABSTRACT:
A thermoplastic elastomer powder composition for powder molding, comprising 100 parts by weight of the following thermoplastic elastomer powder (A) and 0.05 to 20 parts by weight of a fine powder having an average particle diameter of 30 .mu.m or less:
(A) (i) a powder of a thermoplastic elastomer comprising a composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin or (ii) a powder of a thermoplastic elastomer comprising a partially crosslinked composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, the thermoplastic elastomer powder having a complex dynamic viscosity .eta.*(1), as measured at a frequency of 1 radian/sec and at 250.degree. C., of 1.5.times.10.sup.5 poise or less and a Newtonian viscosity index n, calculated from the following formula by using the above-mentioned complex dynamic viscosity .eta.*(1) and the complex dynamic viscosity .eta.*(100) measured at a frequency of 100 radian/sec of 0.67 or less:

REFERENCES:
patent: 3379673 (1968-04-01), Rossman et al.
patent: 4115508 (1978-09-01), Hughes
patent: 4267080 (1981-05-01), Yokoyama et al.
patent: 4319004 (1982-03-01), Spielau et al.
patent: 4748206 (1988-05-01), Nogiwa et al.
World Patents Index Latest Week 9014 Derwent Publications Ltd, AN 90-104961 & JP-A-2057309.
World Patents Index Latest Week 9014 Derwent Publications Ltd, AN 90-104962 & JP-A-2057310.
World Patents Index Latest Week 9137 Derwent Publications Ltd, AN 91-270317 & JP-A-3177447.

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