Glass fiber-reinforced polypropylene resin composition

Abstract

Abstract PURPOSE:To obtain FRPP having a excellent high-temperature rigidity and impact strength of a weld, by specifying the viscosity of crystalline PP and using a specified rubbery polymer in a composition comprising crystalline PP, a modified PP and glass fiber. CONSTITUTION:FRPP is composed of crystalline PP(A) having an intrinsic viscosity eta of 1.25-1.45 in tetralin soln. at 135 deg.C, an oxygen-contg. unsaturated, org. compc.-modified PP(B), a silane compd.-treated glass fiber (C) and an ethylene/alpha-olfefin rubbery polymer (D) having an ethylene content of 60-79% and an intrinsic viscosity eta of 1.0-1.7 in xylene soln. at 70 deg.C. If component D is absent, no sufficient high-temperature rigidity can be obtd. If component A is absent, no sufficient impact strength of a weld can be obtd. Thus, the characteristics of FRPP can be obtd. only when components A and B are present in combination.

Inventors

• 👤 Yoshikazu Fujii
• 👤 義和 藤井
• 👤 Tatsuyuki Mino
• 👤 三野　達行
• 👤 Kaoru Kitadono
• 👤 馨 北殿
• 👤 Yuji Ikezawa
• 👤 勇司 池沢

Bibliographic Details