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公开(公告)号：US4097556A
公开(公告)日：1978-06-27
申请号：US766515
申请日：1977-02-07
申请人： Kunio Toyama , Isamu Shimizu , Takeo Imamura , Atsuo Nakanishi
发明人： Kunio Toyama , Isamu Shimizu , Takeo Imamura , Atsuo Nakanishi
IPC分类号： C08G81/00 , C08F2/02 , C08F257/02 , C08F283/08 , C08G81/02 , C08L51/08
CPC分类号： C08F257/02 , C08F283/08
摘要： A graft copolymer having enhanced moldability with high mechanical strength capable of forming a molded article having excellent gloss, transparency and color is prepared by grafting styrene polymer segments formed under specific conditions selected onto the backbone polymer of polyphenylene ether. Said styrene polymer segments are formed by melting and kneading continuously a mixture of (a) polyphenylene ether expressed by the general formula of: ##STR1## WHEREIN R.sub.1 and R.sub.2 represent an alkyl group having 1-4 carbon atoms or a halogen atom, respectively, and n represents the degree of polymerization and is 90-250, (b) a styrene polymer containing at least 80 weight % of styrene units and (c) styrene-containing monomers in the presence of a radical initiator at a temperature in the range from 160.degree. to 300.degree. C thereby to complete graft polymerization within a time ranging from 0.5 to 15 minutes, preferably under uniform mechanical shearing stress throughout said mixture during graft polymerization.
摘要翻译： 通过将选择的特定条件下形成的苯乙烯聚合物链段接枝到聚苯醚的主链聚合物上，制备具有高机械强度的具有高机械强度的能够形成具有优异的光泽度，透明度和颜色的成型制品的接枝共聚物。 所述苯乙烯聚合物链段通过以下通式表示的（a）聚苯醚的混合物连续熔融和捏合而形成：其中R1和R2分别表示具有1-4个碳原子的烷基或卤素原子， 并且n表示聚合度，为90-250，（b）在自由基引发剂存在下，在至少80重量％的苯乙烯单元和（c）苯乙烯单体的存在下，在 160℃至300℃，从而在0.5至15分钟的时间内完成接枝聚合，优选在接枝聚合期间整个所述混合物中均匀的机械剪切应力。
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公开(公告)号：US4558119A
公开(公告)日：1985-12-10
申请号：US623501
申请日：1984-06-22
申请人： Izumi Yamashita , Kunio Toyama
发明人： Izumi Yamashita , Kunio Toyama
CPC分类号： C08G65/44
摘要： A process is described for oxidative polymerization of a monomeric 2,6-disubstituted phenol in the presence of a catalyst comprising a manganese compound, an N-alkylalkanolamine and a basic compound. The process produces a polyphenyleneether which does not exhibit deterioration in molecular weight and undesirable coloration when subject to heat, such as the heat ordinarily applied in molding. The polyethyleneether have excellent tensile strength and elongation.
摘要翻译： 描述了在包含锰化合物，N-烷基链烷醇胺和碱性化合物的催化剂存在下单体2,6-二取代的苯酚的氧化聚合的方法。 该方法产生聚苯醚，其不会在受热时表现出分子量的劣化和不希望的着色，例如通常在模塑中应用的热。 聚乙烯醚具有优异的拉伸强度和伸长率。
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