| 摘要 |
Polymers showing high notched bar tensile strength, and composed of a mixture of (a) 25-75% of a graft copolymer of a rubbery diene with a particle size mainly of 1-25 microns and a mixture of a vinylcyanide and an aromatic vinylhydrocarbon, and (b) 75-25% of a graft copolymer of a rubbery diene with a particle size mainly of 0.005-1 micron and a mixture again of a vinylcyanide and an aromatic vinylhydrocarbon. The rubbery diene consists generally of a linear polybutadiene with a cis-1,4-content of 30-98%, and amounts to 5-15% of the graft copolymer of (a) and 20-45% of (b). The graft copolymer itself is grafted with acrylonitrile and styrene, with particle sizes generally of (a) 1-10 microns and (b) 0.05-less than 1. |
