公开(公告)号：US4826899A

公开(公告)日：1989-05-02

申请号：US100219

申请日：1987-09-23

申请人： Richard W. Rees

发明人： Richard W. Rees

IPC分类号： C08K9/00 ,  C08G63/66 ,  C08K3/22 ,  C08K9/04 ,  C08K13/02 ,  C08L67/00 ,  C08K5/54

CPC分类号： C08K9/04 ,  C08K13/02 ,  C08K3/2279

摘要： A low smoke generating, high char forming, substantially nondripping flame resistant thermoplastic multi-block copolyester wherein the weight ratio of high melting point blocks to low melting point blocks is from about 8:1 to 1:4, and said copolyester has a melting point below about 175.degree. C., said copolyester composition containing a bromine containing flame retardant; antimony trioxide; a drip suppressant for the multi-block copolyester, 25-65 parts per 100 parts multi-block copolyester of 50-88% alumina trihydrate and 12-50% of a magnesium compound selected from the group consisting of magnesium carbonate, magnesium oxide, and particulate magnesium hydroxide and, optionally, containing calcium carbonate and, preferably, containing a coupling agent having a hydrolyzable moiety containing titanium or silicon and an organophilic group.

公开(公告)号：US4483938A

公开(公告)日：1984-11-20

申请号：US335632

申请日：1981-12-30

申请人： Richard W. Rees

发明人： Richard W. Rees

IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F2/04 ,  C08F2/06 ,  C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F4/68 ,  C08F10/00 ,  C08F10/02

CPC分类号： C08F10/00 ,  C08F10/02 ,  C08F2410/04

摘要： A solution process for the preparation of high molecular weight homopolymers of ethylene and copolymers of ethylene and C.sub.3 -C.sub.12 .alpha.-olefins is disclosed. The process involves feeding monomer, a particlar coordination catalyst and hydrocarbon solvent to a reactor, polymerizing the monomer at a temperature of 100.degree.-320.degree. C. and recovering the polymer. The catalyst is obtained by either (i) combining solutions of titanium tetrahalide/vanadium oxytrihalide and of organoaluminum compound at a temperature of less than 30.degree. C., heating the resulting admixture to a temperature of 150.degree.-300.degree. C. for a period of 5 seconds to 60 minutes and combining the thus heat-treated mixture with a solution of an organoaluminum compound or (ii) combining solutions of titanium tetrahalide and of organoaluminum compound at a temperature of less than 30.degree. C., heating the resultant admixture to a temperature of 150.degree.-300.degree. C. for a period of 5 seconds to 60 minutes, combining the thus heat-treated mixture with vanadium oxytrihalide and then combining the mixture so obtained with a solution of an organoaluminum compound. The catalyst thus obtained is fed to the process, without separation of any compounds of the catalyst.

摘要翻译： 公开了用于制备乙烯的高分子量均聚物和乙烯和C 3 -C 12α-烯烃的共聚物的溶液方法。 该方法包括将单体，特定配位催化剂和烃溶剂进料到反应器中，在100-320℃的温度下聚合单体并回收聚合物。 催化剂通过以下方法获得：（i）在低于30℃的温度下将四卤化钛/三氧化二钒和有机铝化合物的溶液混合，将所得混合物加热至150-300℃的温度一段时间 5秒至60分钟，并将如此热处理的混合物与有机铝化合物的溶液或（ii）在低于30℃的温度下合并四卤化钛和有机铝化合物溶液，将所得混合物加热至 温度为150-300℃，时间为5秒至60分钟，将经热处理的混合物与三氧化二钒组合，然后将所得混合物与有机铝化合物的溶液混合。 将如此获得的催化剂加入到该方法中，而不分离任何催化剂的化合物。