Mica-reinforced propylene resin composition
AssigneeSumitomo Chemical Company, Limited
InventorsTaichi Nishio, Yuji Ikezawa
Life of this patent
Estimating the term…
Abstract
A mica-reinforced propylene resin composition having a volatile matter at 105.degree. C of 0.12% or less is obtained by heating and melting a mixture containing (A) a crystalline polypropylene, (B) mica treated with an organosilane compound, (C) a bismaleimide compound, and (D) an organic peroxide. It has excellent stiffness, heat resistance and dimensional stability, does not corrode a mold, and does not exhale an irritating odor during molding.
Claims13
A mica-reinforced propylene resin composition obtained by heating and melting a mixture consisting essentially of:
- (A) 40 to 95 parts by weight of a crystalline polypropylene,
- (B) 60 to 5 parts by weight of mica treated with an organosilane compound, in which the weight ratio of said organosilane compound to said mica falls within the range of from 0.01:100 to 2.0:100,
- (C) a bismaleimide compound in an amount of 0.01 to 2.0 parts by weight per 100 parts by weight of the sum of components (A) and (B), and
- (D) an organic peroxide,
- said composition having a volatile matter at 105.degree. C. of 0.12% or less.
A pellet obtained by pelletizing a mica-reinforced propylene resin composition obtained by heating and melting a mixture consisting essentially of (A) 40 to 95 parts by weight of a crystalline polypropylene, (B) 60 to 5 parts by weight of mica treated with an organosilane compound wherein the weight ratio of said organosilane compound to said mica falls within the range of from 0.01:100 to 2.0:100, (C) a bismaleimide compound in an amount of 0.01 to 2.0 parts by weight per 100 parts by weight of the sum of components (A) and (B), and (D) an organic peroxide wherein said organic peroxide is present in an amount of up to 0.05 parts by weight, and wherein said composition has a volatile matter content at 105.degree. C. of 0.12% or less.
A mica-reinforced propylene resin composition obtained by heating and melting a mixture consisting essentially of CA) 40 to 95 parts by weight of a crystalline polypropylene, (B) 60 to 5 parts by weight of mica treated with an organosilane compound wherein the weight ratio of said organosilane compound to said mica falls within the range of from 0.01:100 to 2.0:100, (C) a bismaleimide compound in an amount of 0.01 to 2.0 parts by weight per 100 parts by weight of the sum of components (A) and (B), and (D) an organic peroxide wherein said organic peroxide is present in an amount of up to 0.05 parts by weight, and wherein said composition has a volatile matter content at 105.degree. C. of 0.12% or less.
Dependencies are inferred from the claim text.