公开(公告)号：US5106927A

公开(公告)日：1992-04-21

申请号：US405286

申请日：1989-09-11

申请人： Mahmoud R. Rifi ,  Kiu H. Lee ,  Mark J. Kriss ,  Han-Tai Liu

发明人： Mahmoud R. Rifi ,  Kiu H. Lee ,  Mark J. Kriss ,  Han-Tai Liu

IPC分类号： C08F2/34 ,  C08F4/60 ,  C08F4/658 ,  C08F210/16 ,  C08F210/18

CPC分类号： C08F210/18 ,  Y10S526/901

摘要： A process for the production of EPDM comprising reacting ethylene, propylene, ethylidene norbornene, and hydrogen, in the gas phase, in a fluidized bed, under polymerization conditions, in the presence of a catalyst system comprising:(a) a titanium based catalyst having the formula Mg.sub.a Ti(OR).sub.b X.sub.c (ED).sub.d whereinR is an aliphatic or aromatic hydrocarbon radical having 1 to 14 carbon atoms or COR' wherein R' is an aliphatic or aromatic hydrocarbon radical having 1 to 14 carbon atoms;each OR group is alike or different;each X is independently chlorine, bromine, or iodineED is an electron donora is 0.5 to 56;b is 0, 1, or 2;c is 2 to 116; andd is greater than 1.5 a+2;(b) at least one modifier having the formula BX.sub.3 or AlR.sub.(3-b) X.sub.b wherein each R is alkyl or aryl and is alike or different, and X and b are as defined above for component (a),wherein components (a) and (b) are impregnated into an inorganic support; and(c) a hydrocarbyl aluminum cocatalyst with the following proviso:(i) the partial pressure of ethylene is in the range of about 10 to about 150 psi;(ii) the molar ratio of propylene to ethylene is in the range of about 1.5:1 to about 5:1;(iii) the molar ratio of hydrogen to ethylene is in the range of about 0.001:1 to about 0.1:1; and(iv) the amount of ethylidene norbornene is about 1.5 to about 15 percent by weight based on the weight of the fluidized bed.

公开(公告)号：US4560731A

公开(公告)日：1985-12-24

申请号：US608874

申请日：1984-05-14

申请人： Mahmoud R. Rifi

发明人： Mahmoud R. Rifi

IPC分类号： C08F8/20 ,  C08F8/38

CPC分类号： C08F8/20 ,  C08F8/38

摘要： A process of modifying ethylene polymers by reacting granular ethylene polymers having a density of about 0.87 to about 0.93 gram per cc and a pore volume of about 0.1 to about 1 cc per gram with a gaseous chlorosulfonating agent to produce elastomeric, granular, chlorosulfonated polymers having a tensile modulus of less than about 2,000 psi and a crystallinity of less than about 10 percent.

摘要翻译： 通过使气体氯磺化剂使密度为约0.87至约0.93克每立方厘米且孔体积为约0.1至约1cc /克的颗粒状乙烯聚合物与气态氯磺化剂反应来制备弹性体颗粒状氯磺化聚合物来改性乙烯聚合物的方法， 拉伸模量小于约2,000psi，结晶度小于约10％。

公开(公告)号：US5677375A

公开(公告)日：1997-10-14

申请号：US625612

申请日：1996-03-29

申请人： Mahmoud R. Rifi ,  Carlo F. Martino

发明人： Mahmoud R. Rifi ,  Carlo F. Martino

IPC分类号： C08F2/02 ,  C08F2/34 ,  C08F4/60 ,  C08F4/654 ,  C08F10/00 ,  C08F210/16 ,  C08F297/08 ,  C08L23/04 ,  C08F297/06

CPC分类号： C08F297/08 ,  C08F210/16 ,  C08L23/04

摘要： A gas phase process for the production of an in situ polyethylene blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a magnesium/titanium based catalyst system including an activator and a cocatalyst in each of two fluidized bed reactors corrected in series, under polymerization conditions, with the provisos that: (a) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (b) other than the active catalyst referred to in proviso (a) and the cocatalyst referred to in proviso (f), no additional catalyst is introduced into the second reactor; (c) in the first reactor in which a relatively high molecular weight copolymer is made: (1) the alpha-olefin is present in a ratio of about 0.01 to about 0.4 mole of alpha-olefin per mole of ethylene; and (2) optionally, hydrogen is present in a ratio of about 0.001 to about 0.3 moles of hydrogen per mole of ethylene; (d) in the second reactor in which a relatively low molecular weight copolymer is made: (1) the alpha-olefin is present in a ratio of about 0.01 to about 0.6 mole of alpha-olefin per mole of ethylene; and (2) hydrogen is present in a ratio of about 1 to about 2.5 moles of hydrogen per mole of ethylene; (e) a sufficient amount of one or more hydrocarbons is added to the first reactor or to the mixture formed in the first reactor prior to its introduction into the second reactor to provide about 0.5 to about 15 parts by weight of hydrocarbon(s) per 100 parts by weight of the in situ blend, each of said hydrocarbons being a saturated alicyclic hydrocarbon, which is liquid at process temperature, is non-polar, is essentially amorphous, and contains less than about 15 percent by weight paraffin wax; and (f) additional hydrocarbyl aluminum cocatalyst is introduced into the second reactor in an amount sufficient to restore the level of activity of the catalyst transferred from the first reactor to about the initial level of activity in the first reactor.

公开(公告)号：US5326602A

公开(公告)日：1994-07-05

申请号：US983652

申请日：1992-12-01

申请人： Mahmoud; R. Rifi

发明人： Mahmoud; R. Rifi

IPC分类号： C08L23/08 ,  C08K5/01

CPC分类号： C08L23/0815 ,  C08L23/0853 ,  C08L23/0869 ,  Y10T428/1352

摘要： A pre-formed composition having essentially no yield point comprising a blend of:(a) at least about 50 percent by weight of a copolymer of ethylene and a 4 to 8 carbon atom alpha-olefin having a density in the range of 0.880 to 0.915 gram per cubic centimeter; a melt index of no greater than about one gram per 10 minutes; long chain branching in an amount of about 0.5 to about 1.5 long chains per 1000 carbon atoms; and a molecular weight of at least about 200,000; and(b) at least about 5 percent by weight of a copolymer of ethylene and vinyl acetate or a copolymer of ethylene and ethyl acrylate, the percent by weight being based on the combined weight of components (a) and (b).

摘要翻译： 基本上没有屈服点的预成型组合物包含以下混合物的共混物：（a）至少约50重量％的乙烯和4至8个碳原子的α-烯烃的共聚物，其密度范围为0.880-0.915 克/立方厘米; 熔体指数不大于约1克/ 10分钟; 每1000个碳原子约0.5至约1.5个长链的量的长链支化; 和至少约20万的分子量; 和（b）至少约5重量％的乙烯和乙酸乙烯酯的共聚物或乙烯和丙烯酸乙酯的共聚物，其重量百分数以组分（a）和（b）的组合重量计。

公开(公告)号：US5204032A

公开(公告)日：1993-04-20

申请号：US366477

申请日：1989-06-15

申请人： Arakalgud V. Ramamurthy ,  Mahmoud R. Rifi

发明人： Arakalgud V. Ramamurthy ,  Mahmoud R. Rifi

IPC分类号： B29C47/00 ,  C08L23/08 ,  C08L93/04

CPC分类号： B29C47/0004 ,  C08L23/0815 ,  B29C47/0026 ,  C08L93/04

摘要： A process for substantially eliminating surface melt fracture during extrusion of a thermoplastic polymer such as a molten narrow molecular weight distribution, linear, ethylene copolymer, by incorporating into the thermoplastic polymer a wood rosin or wood rosin derivative.

摘要翻译： 一种用于在挤出热塑性聚合物例如熔融的窄分子量分布线性乙烯共聚物的过程中基本上消除表面熔融断裂的方法，通过将木松香或木松香衍生物引入到热塑性聚合物中。

公开(公告)号：US4851499A

公开(公告)日：1989-07-25

申请号：US102364

申请日：1987-09-29

申请人： Mahmoud R. Rifi

发明人： Mahmoud R. Rifi

IPC分类号： C08L23/12 ,  C08K5/00 ,  C08K5/04 ,  C08K5/05 ,  C08K5/10 ,  C08K5/1515 ,  C08L67/00

CPC分类号： C08K5/10 ,  C08K5/0008 ,  C08K5/05 ,  C08K5/1515

摘要： A process for reducing the odor of isotactic polypropylene containing an odor producing unsubstituted or substituted benzoic acid ester by admixing molten isotactic polypropylene with a compound capable of undergoing transesterification with the odor producing ester, said transesterification compound being (i) a partially esterified glycerol; (ii) an expoxide; (iii) a monofunctional or polyfunctional alcohol; (iv) an aliphatic acid ester; or (v) mixtures thereof wherein the transesterification compound is of such functionality and/or of sufficient molecular weight to yield an ester of a molecular weight of at least about 300 upon undergoing ester interchange with said odor causing benzoic acid ester.

公开(公告)号：US4812526A

公开(公告)日：1989-03-14

申请号：US59053

申请日：1987-06-08

申请人： Mahmoud R. Rifi

发明人： Mahmoud R. Rifi

IPC分类号： C08L23/00 ,  C08L23/08 ,  C08L23/12 ,  C08L23/20

CPC分类号： C08L23/12 ,  C08L23/0815

摘要： An impact polypropylene composition comprising:(i) isotactic polypropylene; and(ii) a copolymer of ethylene and an alpha-olefin comonomer having 3 to 8 carbon atoms, said copolymer (a) having a density of about 0.87 to about 0.90 gram per cubic centimeter and a crystallinity in the range of about 20 to about 35 percent by weight based on the weight of the copolymer and (b) being present in the composition in the range of about 20 to about 50 percent by weight based on the weight of the polypropylene.

公开(公告)号：US4717753A

公开(公告)日：1988-01-05

申请号：US853371

申请日：1986-04-15

申请人： Mahmoud R. Rifi

发明人： Mahmoud R. Rifi

IPC分类号： C08F8/22 ,  C08F8/38

CPC分类号： C08F8/22 ,  C08F8/38

摘要： Chlorosulfonated alkylene-alkyl acrylate copolymers prepared by reacting, in the absence of a solvent or diluent, a granular alkylene-alkyl acrylate copolymer with a gaseous chlorosulfonating agent. The granular, elastomeric chlorosulfonated alkylene-alkyl acrylate copolymers can be used as extrudates about wires and cables and can be formed into film material characterized by excellent optical properties.

摘要翻译： 通过在不存在溶剂或稀释剂的情况下将颗粒状亚烷基 - 烷基丙烯酸烷基酯共聚物与气态氯磺化剂反应制备的氯磺化亚烷基 - 丙烯酸烷基酯共聚物。 颗粒状，弹性体氯磺化的亚烷基 - 烷基丙烯酸烷基酯共聚物可以用作电缆和电缆的挤出物，并且可以形成为以优异的光学性质为特征的膜材料。

公开(公告)号：US4493924A

公开(公告)日：1985-01-15

申请号：US501301

申请日：1983-06-10

申请人： Mahmoud R. Rifi

发明人： Mahmoud R. Rifi

IPC分类号： C08K5/56 ,  C08F8/42 ,  C08K5/04 ,  C08K5/10 ,  C08K5/544 ,  C08K5/548 ,  C08L23/00 ,  C08L23/26 ,  C08L23/34 ,  C08L101/00 ,  C08F8/00 ,  C08F8/38

CPC分类号： C08F8/42

摘要： Water-curable, silane modified chlorosulfonated olefinic polymers, particularly desirable for use as coverings about wires and cables, produced by reacting a mixture containing a chlorosulfonated olefinic polymer and a hydrolyzable silane having cyclic oxygen, sulfur or nitrogen functionality.

摘要翻译： 水可固化的硅烷改性的氯磺化烯烃聚合物，特别适用于通过使含有氯磺化烯烃聚合物的混合物和具有环氧，硫或氮官能团的可水解硅烷反应制成的关于电线和电缆的覆盖物。

公开(公告)号：US5367037A

公开(公告)日：1994-11-22

申请号：US220738

申请日：1994-03-31

申请人： Kiu H. Lee ,  Mahmoud R. Rifi ,  Mark J. Kriss ,  Han-Tai Liu

发明人： Kiu H. Lee ,  Mahmoud R. Rifi ,  Mark J. Kriss ,  Han-Tai Liu

IPC分类号： C08F2/34 ,  C08F4/60 ,  C08F4/64 ,  C08F4/68 ,  C08F210/16 ,  C08F210/18

CPC分类号： C08F210/18 ,  Y10S526/901 ,  Y10S526/905

摘要： A process for the production of EPDM comprising reacting ethylene, propylene, ethylidene norbornene, and hydrogen, in the gas phase, in a fluidized bed, under polymerization conditions, in the presence of a catalyst system comprising:(a) the reaction product of a vanadium compound and a electron donor;(b) at least one modifier having the formula BX.sub.3 or AlR.sub.(3-a) X.sub.a wherein each R is alkyl or aryl and is alike or different; each X is independently chlorine, bromine, or iodine; and a is 0, 1, or 2, wherein components (a) and (b) are impregnated into an inorganic support;(c) a halocarbon promoter; and(d) a hydrocarbyl aluminum cocatalyst with the following proviso:(i) the partial pressure of ethylene is in the range of about 25 to about 200 psi;(ii) the molar ratio of propylene to ethylene is in the range of about 0.2:1 to about 2:1;(iii) the molar ratio of hydrogen to ethylene is in the range of about 0.0001:1 to about 0.01:1; and(iv) the amount of ethylidene norbornene is about 1.5 to about 15 percent by weight based on the weight of the fluidized bed.

摘要翻译： 一种制备EPDM的方法，包括在气相中在流化床中，在聚合条件下，在催化剂体系存在下，使乙烯，丙烯，亚乙基降冰片烯和氢反应，所述催化剂体系包括：（a） 钒化合物和电子给体; （b）具有式BX3或AlR（3-a）Xa的至少一种改性剂，其中每个R是烷基或芳基并且是相同或不同的; 每个X独立地为氯，溴或碘; 和a是0,1或2，其中组分（a）和（b）被浸渍到无机载体中; （c）卤碳促进剂; 和（d）烃基铝助催化剂，其具有以下条件：（i）乙烯的分压在约25至约200psi的范围内; （ii）丙烯与乙烯的摩尔比在约0.2:1至约2:1的范围内; （iii）氢与乙烯的摩尔比在约0.0001:1至约0.01:1的范围内; 和（iv）基于流化床的重量，亚乙基降冰片烯的量为约1.5至约15重量％。