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公开(公告)号：US3932370A
公开(公告)日：1976-01-13
申请号：US433616
申请日：1974-01-15
CPC分类号： C08C19/12 , Y10S528/936
摘要： Rubber, e.g., butadiene-acrylonitrile copolymer rubber, in readily friable or free flowing powdered form is prepared by halogenating (e.g., chlorinating) the rubber in particulate form in an aqueous medium. Sodium hypochlorite/acid or chlorine water may be used as the chlorinating agent. Preferred bound chlorine content of the treated rubber is at least 0.1%.
摘要翻译： 橡胶，例如丁二烯 - 丙烯腈共聚物橡胶，容易易碎或自由流动的粉末形式是通过在水性介质中将颗粒形式的橡胶卤化（例如氯化）来制备的。 次氯酸钠/酸或氯水可用作氯化剂。 经处理的橡胶的优选的结合氯含量为至少0.1％。
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公开(公告)号：US3901861A
公开(公告)日：1975-08-26
申请号：US41375073
申请日：1973-11-07
申请人： UNIROYAL INC
IPC分类号： C08F8/00 , C08C19/00 , C08F295/00 , C08D5/04
CPC分类号： C08C19/00
摘要： Disclosed is a method of effecting jumping of the molecular weight of elastomeric unsaturated hydrocarbon polymers by treating such polymers while in fluid form and under substantially anhydrous conditions with a catalyst system comprising: (1) a peroxy acid, and (2) an inorganic Lewis acid which preferably is boron trifluoride complexed with an oxygencontaining organic compound (most preferably boron trifluoride etherate), in such a manner that jumping of the molecular weight of the polymer occurs but gelation thereof is absent. The jumping reaction takes place rapidly, even at room temperature, and is essentially non-exothermic. The catalyst system is then rendered ineffective, almost invariably by ''''killing'''' the Lewis acid component thereof, as by the addition of water or a water-soluble base which, in the case of boron trifluoride etherate or similar complex, destroys the boron trifluoride content thereof. The polymer content of the mixture, which has a jumped molecular weight but is free from gel, is completely soluble in benzene and other organic solvents in which the starting polymer was soluble, and is vulcanizable, may be recovered from the mixture in any suitable way as by neutralizing the acidity of the mixture, then floccing the polymer with an alcohol solution of an antioxidant, and drying the flocced polymer.
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公开(公告)号：US3821187A
公开(公告)日：1974-06-28
申请号：US36065173
申请日：1973-05-16
发明人： ICHIKAWA M , HARITA Y , TASHIRO M , ITO H
CPC分类号： C08C19/10
摘要： A process for producing cyclic compounds of conjugated diene polymers which comprises bringing at least one polymer selected from the group consisting of conjugated diene polymers and copolymers having unsaturated bonds in the main chain or side chain into contact with a catalyst composed of at least one compound selected from the group consisting of organoaluminum halides represented by the general formula R2AlX or R3Al2X3 (wherein R is alkyl group having one to 12 carbon atoms and X is a halogen) and at least one organic halogenated compound.
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公开(公告)号：US3784531A
公开(公告)日：1974-01-08
申请号：US3784531D
申请日：1971-12-23
申请人： CITIES SERVICE CO
发明人： ZIMMERMAN S , MCCOY P
CPC分类号： C08C19/14 , C08F8/44 , C08F210/00
摘要： A HA,O.ALOGEN IS INCORPORATED INTO A SOLUTION OF RUBBER DISSOLVED IN AN ORGANIC SOLVENT TO EFFECT HALOGENATION OF THE RUBBER. ANHYDROUS AMMONIA IS THEN DISSOLVED IN THE RUBBER SOLUTION AND REACTS WITH ANY FREE HALOGEN, HYDROGEN HALIDE, OR HYPOHALIDE PRESENT IN THE SOLUTION AFTER HALOGENATION OF THE RUBBER. THE AMMONIUM HALIDE REACTION PRODUCT IS FILTERED OR WASHED FROM THE HALOGENATED RUBBER SOLUTION AND THE ORGANIC SOLVENT IS VAPORIZED AND REMOVED FROM THE HALOGENATED RUBBER. THIS INVENTION CAN BE EMPLOYED TO ADVANTAGE IN THE NEUTRALIZATION OF BROMINATED OR CHLORINATED BUTYL RUBBER.
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公开(公告)号：US3652517A
公开(公告)日：1972-03-28
申请号：US3652517D
申请日：1970-02-05
发明人： YOSHIMOTO TOSHIO , KANEKO SEIYA , SASAKI TAKASHI , NARUMIYA TSUNEAKI , YOSHII HIROSHI , TAKAMATSU TETSUYA
摘要： HALOGENATED AND HYDROGENATED POLYMERS WHICH ARE VULCANIZABLE AND WHICH ARE PRODUCED BY HYDROGENATING A POLYMER DISSOLVED IN AN INERT SOLVENT IN THE PRESENCE OF A ZIEGLER-TYPE HYDROGENATION CATALYST, HALOGENATING THE RESULTING HYDROGENATED POLYMER BY CONTACTING HALOGEN THEREWITH, MIXING WATER OR A NON-SOLVENT WITH SAID HYDROGENATED POLYMER SOLUTION, REMOVING THE CATALYST WITH WATER OR THE NON-SOLVENT, AND RECOVERING THE HALOGENATED HYDROGENATED POLYMER FREE FROM THE CATALYST.
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公开(公告)号：US3637635A
公开(公告)日：1972-01-25
申请号：US3637635D
申请日：1964-01-27
申请人： POLYMER CORP
CPC分类号： C08C19/00
摘要： 1. A PROCESS OF MODIFYING A SUBSTANITALLY GEL-FREE RUBBERY POLYMER OF BUTADIENE PREPARED IN THE PRESENCE OF A ZIEGLER CATALYST AND HAVING AT LEAST 75% OF THE BUTADIENE UNITS IN THE CIS-1,4 CONFIGURATION WHCIH COMPRISES TREATING SAID POLYMER OF BUTADIENE HAVING A MOONEY VISCOSITY OF ABOUT 10 TO 70, WHILE DISPERSED IN AN INERT ORGANIC LIQUID, WITH BETWEEN 0.3 AND 5% BY WEIGHT OF THE BUTADIENE POLYMER OF A LEWIS ACID SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORIDE, ALUMINUM TRICHLORIDE, TITANIUM TETRACHLORIDE AND PRODUCT OF INCOMPLETE STOPPING OF A POLYMERIZATION CATALYST COMPRISING A COBALT SALT AND AN ORGANO-ALUMINUM CHLORIDE, WITH LESS THAN EQUIMOLAR AMOUNT OF A CATALYST STOPPER, TO PRODUCE A SUBSTANTIALLY GEL-FREE MODIFIED POLYMER OF BUTADIENE HAVING A MOONEY VISCOSITY WHICH IS AT LEAST MOONEY POINTS HIGHER THAN THAT OF THE UNMODIFIED POLYMER.
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公开(公告)号：US3558589A
公开(公告)日：1971-01-26
申请号：US3558589D
申请日：1968-11-18
CPC分类号： C08C19/08 , Y10S526/914
摘要： HOMOPOLYMERS OF CONJUGATED DIENES CONTAINING 4 OR 5 CARBON ATOMS INCLUDING NATURAL RUBBER, AND COPOLYMERS THEREOF WITH VINYL AROMATIC COMPOUNDS, INCLUDING BOTH EMULSION POLYMERS AND SOLUTION POLYMERS, ARE DEPOLYMERIZED BY TREATMENT WITH A SALT OF A TRANSITION METAL AND AN ORGANOMETALLIC. THE REACTION MAY BE ACCELERATED BY INCLUDING AN OLEFIN. THE PROCESS IS USED FOR LOWERING THE MOLECULAR WEIGHT OF A POLYMER, PARTICULARLY A POLYMER OF SUCH HIGH MOLECULAR WEIGHT THAT IS IS DIFFICULTY PROCESSIBLE. IT IS ALSO APPLICABLE TO THE REMOVAL OF GEL OR OTHER DEPOSIT OF HIGH MOLECULAR WEIGHT FROM A POLYMERIZATION REACTOR.
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公开(公告)号：US3506639A
公开(公告)日：1970-04-14
申请号：US3506639D
申请日：1968-02-01
发明人： HALASA ADEL F
CPC分类号： C08C19/44
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公开(公告)号：US3872071A
公开(公告)日：1975-03-18
申请号：US45837274
申请日：1974-04-05
摘要： Polymers of conjugated diene hydrocarbons and a method for their preparation which comprises (A) polymerizing the conjugated diene to form a polymer having substantially a trans-1,4 structure in the presence of a catalyst prepared by mixing a vanadium compound selected from vanadium trichloride and the product of vanadium tetrachloride and titanium tetrachloride with at least one organo aluminum compound and with up to 3 moles of a titanium compound per mole of vanadium compound where the titanium compound is selected from the group consisting of titanium triacetylacetonate and the compounds having the formula Ti(OR'')4 and (B) mixing oxygen with the polymerized diene hydrocarbon and catalyst to reduce the molecular weight of the polymer.
摘要翻译： 共轭二烯烃的聚合物及其制备方法包括：（A）在催化剂存在下，使共轭二烯聚合形成基本上具有反式-1,4结构的聚合物，该催化剂通过将选自三氯化钒和 四氯化钒和四氯化钛与至少一种有机铝化合物的产物和每摩尔钒化合物最多3摩尔钛化合物的产物，其中钛化合物选自三乙酰丙酮钛和具有式Ti的化合物 （OR'）4和（B）将氧与聚合的二烯烃和催化剂混合以降低聚合物的分子量。
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10.发明授权Acrylate and methacrylate terminated polydiene macromolecular monomers having a substantially uniform molecular weight distribution 失效丙烯酸酯和甲基丙烯酸酯终止的聚异戊二烯分子单体具有重大的均匀分子量分布
公开(公告)号：US3862101A
公开(公告)日：1975-01-21
申请号：US37603073
申请日：1973-07-02
发明人： MILKOVICH RALPH , CHIANG MUTONG T
IPC分类号： C07C69/527 , C08C19/44 , C08F290/04 , C08G85/00 , C08D1/20 , C08D5/04
CPC分类号： C08F290/04 , C08C19/44 , C08F290/048 , C08G85/00
摘要： This application discloses a copolymerizable macromolecular monomer having a substantially uniform molecular weight distribution such that its ratio of Mw/Mn is not substantially above about 1.1, wherein Mw is the weight average molecular weight of the macromolecular monomer, and Mn is the number average molecular weight of the macromolecular monomer, said macromolecular monomer being represented by the structural formula:
WHEREIN R is lower alkyl and R'' and R'''' are each either hydrogen or methyl, and n is a positive integer having a value of at least about 20.摘要翻译： 本申请公开了具有基本均匀的分子量分布的可共聚的大分子单体，使得其Mw / Mn的比例基本上不高于约1.1，其中Mw是大分子单体的重均分子量，Mn是数均分子量 的大分子单体，所述大分子单体由结构式表示：
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