| 摘要 |
PCT No. PCT/JP91/00668 Sec. 371 Date Jan. 16, 1992 Sec. 102(e) Date Jan. 16, 1992 PCT Filed May 20, 1991 PCT Pub. No. WO91/18049 PCT Pub. Date Nov. 28, 1991.The present invention provides a polypropylene resin composition which permits the formation of materials having high strength and stiffness, less warpage deformation and such excellent mechanical durability that these materials can be used when load is applied continuously for a long term or when load is applied repeatedly. The polypropylene resin composition contains the three components of (a) 40 to 75% by weight of a modified polypropylene obtained by heating and melting a mixture prepared by adding at least (1) 0.01 to 2% by weight of an unsaturated acid, (2) 0.1 to 3% by weight of an unsaturated silane and (3) an organic peroxide to a crystalline polypropylene, (b) 10 to 35% by weight of glass fibers, and (c) 15 to 45% by weight of a mica powder, and the components (b) and (c) are blended with the component (a) so that the total amount of the components (b) and (c) may be in the range of from 25 to 60% by weight based on the composition.
|
