Title:
THERMOPLASTIC ELASTOMER POWDER FOR POWDER MOLDING, METHOD FOR POWDER MOLDING USING THE SAME AND ITS MOLDED BODY
Document Type and Number:
Japanese Patent JP3063255
Kind Code:
B2
Abstract:
PURPOSE: To obtain a molded body by carrying out powder molding of a thermoplastic elastomer powder, excellent in powder fluidity and capable of keeping high fluidity even in a state with hardly any application of shaping pressure and performing the powder molding.
CONSTITUTION: Thermoplastic elastomer powder for powder molding is composed of an elastomer composition of an ethylene-α-olefinic copolymer rubber which is an oil-extended olefinic copolymer rubber prepared by blending an ethylene-α-olefinic copolymer rubber having 130-350 Mooney viscosity with a mineral oil-based softener and a polyolefinic resin (e.g. polypropylene) or a partially crosslinked type elastomer composition obtained by dynamically crosslinking the ethylene-α-olefinic copolymer rubber and the polyolefinic resin. The aforementioned powder has 1.5×105 complex dynamic viscosity η(R) (1) measured at 1 radian/sec, ≤0.67 (n) Newtonian viscosity index calculated from the formula using the complex dynamic viscosity η(R)(100) measured at 100 radians/see and ≤45 harness.
Inventors:
Tadashi Hikasa
Hiroaki Tsumadori
Tatsuro Hamanaka
Toshiro Igarashi
Hiroshi Shida
Hiroaki Tsumadori
Tatsuro Hamanaka
Toshiro Igarashi
Hiroshi Shida
Application Number:
JP19958991A
Publication Date:
July 12, 2000
Filing Date:
August 08, 1991
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B29C41/08; B29C41/18; C08L23/00; C08L23/02; C08L23/08; C08L23/10; C08L23/14; C08L23/16; B29C41/00; B29K9/00; B29K23/00; B29L31/58; C08L91/00; (IPC1-7): C08L23/08; B29C41/08; B29C41/18; C08L23/02; C08L23/16
Domestic Patent References:
| JP257309A |
Attorney, Agent or Firm:
Mitsuhiro Moroishi (1 person outside)