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1. 发明授权

US4360639A Poly-2-isopropenylnaphthalene poly-butadiene-1,3-block copolymers and method for their production 失效
标题翻译：聚-2-异丙烯基萘聚丁二烯-1,3-嵌段共聚物及其制备方法
公开(公告)号：US4360639A
公开(公告)日：1982-11-23
申请号：US328093
申请日：1981-12-07
申请人： Rolf C. Schulz , Dieter Engel
发明人： Rolf C. Schulz , Dieter Engel
IPC分类号： C08F297/00 , C08F297/04
CPC分类号： C08F297/04
摘要： Poly-2-isopropenylnaphthalene-poly-butadiene-1,3-block copolymers and method for their production. Di- or tri-block polymers with molecular weights of at least 10,000 are formed from, respectively, a poly-2-isopropenylnaphthalene block and a poly-butadiene-1,3 block, and a poly-2-isopropenylnaphthalene block and a poly-butadiene-1,3 block as well as a further poly-2-isopropenylnaphthalene block. The products display rubber-elastic characteristics of the known block polymerizates, with improved high-temperature stability. The polymers are formed by reacting 2-isopropenylnaphthalene in an inert, aliphatic or cycloaliphatic hydrocarbon solvent, at low temperature, with alkalimetal, alkalimetalalkylene, -arylene or -hydride catalyst, into a poly-2-isopropenylnaphthalene block. This formed polymeric anion then has poly-butadiene-1,3-block added to it at its active chain end. If necessary, a second poly-2-isopropenylnaphthalene block is added. The reaction becomes terminated in known manner through the addition of water, alcohol or acid. Lithium-alkyl is the preferred catalyst; tetrahydrofuran is the preferred solvent; the reaction is performed at temperatures between 0.degree. and -80.degree. C., preferably between about -50.degree. C. and -80.degree. C. It is also preferred to initially provide the 2-isopropenylnaphthalene in the solvent at about 0.degree. to 5.degree. C.
摘要翻译：聚-2-异丙烯基萘 - 聚丁二烯-1,3-嵌段共聚物及其制备方法。分子量至少为10,000的二嵌段或三嵌段聚合物分别由聚-2-异丙烯基萘嵌段和聚丁二烯-1,3-嵌段和聚-2-异丙烯基萘嵌段和聚 - 丁二烯-1,3-嵌段以及另外的聚-2-异丙烯基萘嵌段。该产品展示了已知的嵌段聚合物的橡胶弹性特性，具有改善的高温稳定性。聚合物是通过使2-异丙烯基萘在惰性，脂族或脂环族烃溶剂中在低温下与碱金属，碱金属亚烷基， - 亚芳基 - 酐催化剂反应，形成聚-2-异丙烯基萘嵌段。然后，形成的聚合物阴离子在其活性链端加入聚丁二烯-1,3-嵌段。如果需要，加入第二聚-2-异丙烯基萘嵌段。反应以已知方式通过加入水，醇或酸终止。锂 - 烷基是优选的催化剂; 四氢呋喃是优选的溶剂; 该反应在0℃至-80℃之间的温度下进行，优选在约-50℃至-80℃之间进行。最好在约0℃至5℃下最初在溶剂中提供2-异丙烯基萘 DEG C.

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