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1. 发明授权

US5171814A Alpha-methylstyrene high-content copolymers, a process for their production and thermoplastic resin compositions containing alpha-methylstyrene high-content copolymers 失效
标题翻译： α-甲基苯乙烯高含量共聚物，其制备方法和含α-甲基苯乙烯高含量共聚物的热塑性树脂组合物
公开(公告)号：US5171814A
公开(公告)日：1992-12-15
申请号：US875575
申请日：1992-04-27
申请人： Shigemi Mathumoto , Fumiya Nagoshi
发明人： Shigemi Mathumoto , Fumiya Nagoshi
IPC分类号： C08F212/12 , C08L25/16 , C08L51/04
CPC分类号： C08L25/16 , C08F212/12 , C08L51/04
摘要： An .alpha.-methylstyrene high-content copolymer which is characterized by that it is a copolymer which comprises 65-90 parts by weight of .alpha.-methylstyrene with 35-10 parts by weight of acrylonitrile and 0-5 parts by weight of a copolymerizable vinyl monomer or monomers and that a component having an .alpha.-methylstyrene content of 82% or higher is contained in an amount of 30 parts by weight or more. Such a copolymer may be produced by a process which comprises charging 65 parts by weight or more of .alpha.-methylstyrene and 10% by weight or less based on this .alpha.-methylstyrene of acrylonitrile and a vinyl monomer or monomers all in one portion at the initial stage, making the system fully emulsified, gradually adding 35 parts by weight or less of acrylonitrile and the vinyl monomer or monomers, and carrying out emulsion polymerization until the amount of a polymer produced has amounted to 50 parts by weight or more in such way that the ratio of the .alpha.-methylstyrene monomer to the monomers other than .alpha.-methylstyrene in the system is always maintained at 90/10 or higher on the weight basis. A thermoplastic resin composition comprises the above .alpha.-methylstyrene high-content copolymer and a graft copolymer obtained by reacting a diene rubber with monomer comprising a monovinyl aromatic compound and an unsaturated nitrile compound, the diene rubber being present in an amount of 5-30 parts by weight.Molded products obtained from the composition of this invention have excellent heat resistance and impact resistance.
摘要翻译：一种α-甲基苯乙烯高含量共聚物，其特征在于它是共聚物，其包含65-90重量份的α-甲基苯乙烯和35-10重量份的丙烯腈和0-5重量份的可共聚的乙烯基单体或单体，并且包含30重量份以上的α-甲基苯乙烯含量为82％以上的成分。这样的共聚物可以通过以下方法制备：将α-甲基苯乙烯为65重量份或更多，基于该丙烯腈的α-甲基苯乙烯和乙烯基单体或单体的初始浓度为10重量％阶段，使系统完全乳化，逐渐加入35重量份或更少的丙烯腈和乙烯基单体或单体，并进行乳液聚合直到产生的聚合物的量达到50重量份以上，使得系统中α-甲基苯乙烯单体与除α-甲基苯乙烯以外的单体的比例总是以重量计维持在90/10或更高。热塑性树脂组合物包含上述α-甲基苯乙烯高含量共聚物和通过使二烯橡胶与包含单乙烯基芳族化合物和不饱和腈化合物的单体反应获得的接枝共聚物，二烯橡胶的含量为5-30份重量。由本发明的组合物得到的成型品具有优异的耐热性和耐冲击性。

2. 发明授权

US4526928A .alpha.-Methylstyrene high-content copolymers, a process for their production and thermoplastic resin compositions containing .alpha.-methylstyrene high-content copolymers blended with graft copolymers 失效
标题翻译： α-甲基苯乙烯高含量共聚物，其制备方法和含有与接枝共聚物共混的α-甲基苯乙烯高含量共聚物的热塑性树脂组合物
公开(公告)号：US4526928A
公开(公告)日：1985-07-02
申请号：US458133
申请日：1983-01-14
申请人： Shigemi Mathumoto , Fumiya Nagoshi
发明人： Shigemi Mathumoto , Fumiya Nagoshi
IPC分类号： C08F2/00 , C08F212/00 , C08F212/10 , C08F212/12 , C08L7/00 , C08L21/00 , C08L25/00 , C08L25/16 , C08L51/00 , C08L51/02 , C08L51/04 , C08L55/00 , C08L25/12
CPC分类号： C08L25/16 , C08F212/12 , C08L51/04
摘要： An .alpha.-methylstyrene high-content copolymer which is characterized by that it is a copolymer which comprises 65-90 parts by weight of .alpha.-methylstyrene with 35-10 parts by weight of acrylonitrile and 0-5 parts by weight of a copolymerizable vinyl monomer or monomers and that a component having an .alpha.-methylstyrene content of 82% or higher is contained in an amount of 30 parts by weight or more. Such a copolymer may be produced by a process which comprises charging 65 parts by weight or more of .alpha.-methylstyrene and 10% by weight or less based on this .alpha.-methylstyrene of acrylonitrile and a vinyl monomer or monomers all in one portion at the initial stage, making the system fully emulsified, gradually adding 35 parts by weight or less of acrylonitrile and the vinyl monomer or monomers, and carrying out emulsion polymerization until the amount of a polymer produced has amounted to 50 parts by weight or more in such way that the ratio of the .alpha.-methylstyrene monomer to the monomers other than .alpha.-methylstyrene in the system is always maintained at 90/10 or higher on the weight basis. A thermoplastic resin composition comprises the above .alpha.-methylstyrene high-content copolymer and a graft copolymer obtained by reacting a diene rubber with monomer comprising a monovinyl aromatic compound and an unsaturated nitrile compound, the diene rubber being present in an amount of 5-30 parts by weight. Molded products obtained from the composition of this invention have excellent heat resistance and impact resistance.
摘要翻译：一种α-甲基苯乙烯高含量共聚物，其特征在于它是共聚物，其包含65-90重量份的α-甲基苯乙烯和35-10重量份的丙烯腈和0-5重量份的可共聚的乙烯基单体或单体，并且包含30重量份以上的α-甲基苯乙烯含量为82％以上的成分。这样的共聚物可以通过以下方法制备：将α-甲基苯乙烯为65重量份或更多，基于该丙烯腈的α-甲基苯乙烯和乙烯基单体或单体的初始浓度为10重量％阶段，使系统完全乳化，逐渐加入35重量份或更少的丙烯腈和乙烯基单体或单体，并进行乳液聚合直到产生的聚合物的量达到50重量份以上，使得系统中α-甲基苯乙烯单体与α-甲基苯乙烯以外的单体的比率总是以重量计保持在90/10或更高。热塑性树脂组合物包含上述α-甲基苯乙烯高含量共聚物和通过使二烯橡胶与包含单乙烯基芳族化合物和不饱和腈化合物的单体反应获得的接枝共聚物，二烯橡胶的含量为5-30份重量。由本发明组合物得到的成型品具有优异的耐热性和耐冲击性。

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