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公开(公告)号：US4305920A
公开(公告)日：1981-12-15
申请号：US117006
申请日：1980-01-30
CPC分类号： C01G23/026 , C08F10/00
摘要： A fine solid titanium trichloride is used as a catalyst for a polymerization of an .alpha.-olefin. The solid titanium trichloride is produced by precipitating it at lower than 150.degree. C. from a liquid titanium trichloride complex in the presence of an ester having the formula ##STR1## wherein R.sup.1 and R.sup.2 respectively represent a hydrocarbon moiety and total carbon atoms of R.sup.1 and R.sup.2 are 10 or more.
摘要翻译： 使用细固体三氯化钛作为α-烯烃聚合的催化剂。 固体三氯化钛是通过在液态三氯化钛络合物存在下，在具有下式的酯的存在下将其在低于150℃下沉淀而制备的：其中R 1和R 2分别表示烃部分和R 1的总碳原子 R2为10以上。
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公开(公告)号：US4339557A
公开(公告)日：1982-07-13
申请号：US183454
申请日：1980-09-02
IPC分类号： C08F297/00 , C08F4/64 , C08F297/08
CPC分类号： C08F297/083
摘要： A propylene-ethylene block copolymer is produced in the presence of a catalytic system essentially comprising an organoaluminum compound and a solid titanium trichloride catalytic complex having an atomic ratio of Al to Ti of less than 0.15 and having a complexing agent in two stages of polymerization;(a) a first stage for polymerizing propylene in the presence of a liquid propylene and hydrogen to produce a propylene homopolymer having a melt flow index of 1 to 150 at a ratio of 70 to 95% by weight based on a total of polymers; and(b) a second stage for copolymerizing propylene and ethylene in the presence of hydrogen and a liquid propylene at a concentration of propylene in vapor phase based on a total of propylene and ethylene in vapor phase of 50 to 85 mol. % and at a concentration of hydrogen in vapor phase based on a total of propylene and ethylene in vapor phase of 0.5 to 30 mol %, to produce ethylene-propylene copolymer having a melt flow index of 10.sup.-7 to 0.1 at a ratio of 5 to 30% by weight based on a total of polymers.
摘要翻译： 丙烯 - 乙烯嵌段共聚物是在催化体系基本上包含有机铝化合物和固态三氯化钛催化配合物的存在下制备的，其中Al与Ti的原子比小于0.15，在两个阶段中具有络合剂; （a）在液体丙烯和氢气存在下聚合丙烯以产生熔体流动指数为1-150的丙烯均聚物的第一阶段，其比例为70至95重量％，基于聚合物总量; 和（b）在氢气和丙烯浓度为丙烯的气相存在下共聚丙烯和乙烯的第二阶段，基于气相中丙烯和乙烯的总量为50至85mol。 ％，并且在气相中的氢气浓度基于气相中丙烯和乙烯的总量为0.5-30mol％，以产生熔体流动指数为10-7至0.1的比例为5的乙烯 - 丙烯共聚物 至30重量％，基于总共聚合物。
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公开(公告)号：US4507450A
公开(公告)日：1985-03-26
申请号：US818754
申请日：1977-07-25
CPC分类号： C08F10/00
摘要： In a process for preparing polyolefin by polymerizing an olefin in the presence of a catalyst system combining an organo-aluminum compound and a titanium containing solid catalytic component prepared by mixing (a) a silanol compound (b) a Grignard reagent and (c) a titanium tetrahalide, the components (a) (b) or (c) or the reaction mixture of two or three components thereof is contacted with (d) one or more electron donor selected from the group consisting of amines, carboxylic acid amides, phosphines, phosphine oxides, phosphoric esters, phosphorous esters, phosphoric acid amides, ketones and carboxylic esters. The polyolefin having high isotactic index can be obtained.
摘要翻译： 在通过混合（a）硅烷醇化合物（b）格利雅试剂和（c））制备的有机铝化合物和含钛固体催化剂组分的催化剂体系的存在下聚合烯烃的方法中， 四卤化钛，组分（a）（b）或（c）或其两种或三种组分的反应混合物与（d）一种或多种选自胺，羧酸酰胺，膦， 磷化氢，磷酸酯，磷酸酯，磷酸酰胺，酮和羧酸酯。 可获得具有高全同立构指数的聚烯烃。
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公开(公告)号：US5013606A
公开(公告)日：1991-05-07
申请号：US399005
申请日：1989-08-28
CPC分类号： B41M5/3825 , Y10S428/913 , Y10S428/914
摘要： A film for a resistance layer for an electric-thermal print system, which comprises from 50 to 85% by weight of a polycarbonate resin and from 15 to 50% by weight of carbon black, and which further contains from 0.1 to 30 parts by weight, relative to 100 parts by weight of the polycarbonate resin, of an elastomer.
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公开(公告)号：US4678707A
公开(公告)日：1987-07-07
申请号：US749018
申请日：1985-06-26
CPC分类号： G10K11/168 , B32B15/08 , F16F9/306 , Y10T428/25 , Y10T428/30 , Y10T428/31688 , Y10T428/31692
摘要： Disclosed is a vibration damping composite laminate of the type comprising a viscoelastic polymer composition layer interposed between two layers of metal, which is high in the damping effectiveness and can readily be spot-welded to metal structures. Essentially the polymer composition is a blend of a polyvinyl acetal resin and particulate carbon which amounts to 10-80 wt % of the composition, on condition that the ratio of the mean particle size of the particulate carbon to the thickness of the polymer composition layer is from 0.5 to 1.7. Optionally the polymer composition may further comprise a polyolefine resin and/or a plasticizer.
摘要翻译： 公开了一种包含介于两层金属之间的粘弹性聚合物组合物层的类型的减震复合层压板，其阻尼效果高，并且可以容易地点焊到金属结构。 基本上聚合物组合物是聚乙烯醇缩醛树脂和颗粒状碳的共混物，相当于组合物的10-80重量％，条件是颗粒碳的平均粒度与聚合物组合物层的厚度之比为 从0.5到1.7。 任选地，聚合物组合物还可包含聚烯烃树脂和/或增塑剂。
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