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JPS6129362B2 |
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JPS6129365B2 |
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JPS6129363B2 |
In the preparation of 1,2-polybutadiene with a vinyl content of at least 70% by contacting 1,3-butadiene with a catalyst consisting of: (A) a cobalt compound, (B) an organic phosphine compound, (C) a trialkylaluminum compound, and (D) wa...
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JPS6129364B2 |
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JPS6128684B2 |
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JPS6128683B2 |
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JPS6127402B2 |
A process for preparing crystalline 1,2-polybutadiene by contacting 1,3-butadiene with a catalyst consisting of (A) a cobalt compound, (B) an organoaluminum compound, (C) water in an amount of 0.25 to 1.5 mole per mol of said organoalumi...
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JPS6117838B2 |
Organo-lithium compounds of the formula: wherein R is an alkyl group of up to 5 carbon atoms, R' is either hydrogen or an alkyl group of up to 5 carbon atoms and n is an integer from 2 to 10. These bifunctional organo-lithium compounds a...
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JPS60190407A |
PURPOSE: The polymerization of isoprene is carried out using a catalyst containing, at a specific ratio, an organoaluminum compound and a solid Ti catalyst which has been prepared by crushing an Mg halide together with a specific Ti comp...
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JPS60115604A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6024460B2 |
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JPS6021125B2 |
A process for purifying a crude isoprene containing polymerization inhibiting materials such as acetylenes and sulfur compounds to produce high purity or polymerization grade isoprene comprising distilling the crude isoprene in the prese...
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JPS6055004A |
PURPOSE: To facilitate the formation of a high-MW hydrophilic polymer having unsaturated double bonds, by epoxidizing a specified polybutadiene and opening the epoxy rings of the epoxidized polybutadiene by heating in the presence of a t...
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JPS606362B2 |
Substantially gel-free cis-1,4-polybutadiene is produced by polymerizing butadiene in the presence of a catalyst comprising a mixture of a cobalt compound, at least one organoaluminum compound and water, the improvement being the use of ...
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JPS5952168B2 |
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JPS59142211A |
PURPOSE: To obtain the titled polymer having a principal structure of a trans 1,4 bond in high yields, by polymerizing a conjugated diene compound in the presence of a catalyst comprising a solid catalyst component containing an Mg compo...
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JPS59131609A |
PURPOSE: To prepare a conjugated diene polymer having a regulated molecular weight, by using a catalyst consisting of a specific lanthanum rare earth element compound, a specified organoaluminum compound and a specific aluminum halide co...
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JPS59117512A |
PURPOSE: To obtain the titled polymer with reduced energy having improved Mooney viscosity and suppressed gel content, by polymerizing 1,3-butadiene in a hydrocarbon solvent having high solubility parameter at high temperature using an N...
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JPS59102907A |
PURPOSE: The titled film for dispersing chemicals for rubber uniformly, having improved compatibility with kneaded rubber in rubber kneading process, not causing reduction in physical properties of rubber composition, obtained by process...
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JPS5915927B2 |
1,3-Butadiene is polymerized to polymers having broad molecular weight distribution in a continuous-adiabatic organolithium catalyzed polymerization in a flow pipe reactor by varying in a periodic manner the ratio of catalyst to 1,3-buta...
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JPS5958003A |
PURPOSE: To obtain the titled particles capable of immobilizing an antigen, antibody, etc. to the surfaces of them firmly, detecting even a very small amount of a substance in high sensitivity, by irradiating a specific monomer with ioni...
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JPS5915414A |
PURPOSE: To prevent lowering of catalytic activity and deposition of polymer on a reactor, by using a polyoxyalkylene sorbitan alkyl ester in polymerizing 1,3- butadiene with the aid of a 1,2-polymerization catalyst containing carbon dis...
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JPS58196213A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS58154705A |
PURPOSE: To effect the selective polymerization of 1, 3-butadiene, isoprene or 1, 3-pentadiene, by polymerizing an unsaturated hydrocarbon mixture containing 1, 3-pentadiene in the presence of a polymerization catalyst containing a rare ...
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JPS5835204B2 |
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JPS5891706A |
PURPOSE: To obtain the titled polymer excellent in breaking property, tear property and resilience, by polymerizing 1,3-butadiene in the presence of a specified Ni catalyst while removing the heat by evaporation, liquefaction by cooling,...
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JPS5834816A |
PURPOSE: To produce 1,2-polybutadiene with an intrinsic viscosity above a specified value in high polymerization catalyst activity, by polymerizing 1,3-butadiene in the presence of a catalyst containing an organoaluminum halide. CONSTITU...
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JPS5740846B2 |
There is disclosed a method of preparing high cis-1,4-polybutadiene which comprises continuously polymerizing butadiene in mixture with an inert aliphatic or cycloaliphatic solvent employing as a catalyst a mixture comprising (A) at leas...
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JPS5738603B2 |
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JPS57126807A |
PURPOSE: The title polymer excellent in resilience, heat generation, processability, etc., prepared by designing the polymer to have a bimodal MW distribution and a specified relationship between the weight-average MW of this rubber and ...
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JPS57125206A |
PURPOSE: To obtain the titled rubber in high yield, being vulcanized to provide a rubber product having improved tear resistance and flex cracking characteristics, by polymerizing 1,3-butadiene in the presence of a specific catalyst for ...
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JPS5792014A |
PURPOSE: The titled polymer, having a Mooney viscosity in a specific range, consisting of blocks having different contents of 1,2- and/or 3,4-bonds, with a high resistance to wet skid and low rolling resistance, and suitable for automoti...
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JPS5773013A |
PURPOSE: To prepare a polymer having excellent cold flow property and coauylability with steam, and narrow molecular weight distribution, by copolymerizing butadiene in the presence of a small amount of a polyvinyl aromatic compound usin...
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JPS5719124B2 |
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JPS5715765B2 |
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JPS5715604B2 |
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JPS579367B2 |
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JPS574645B2 |
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JPS5650894B2 |
High molecular weight polybutadiene, polyisoprene and other hydrocarbon polymers having a high vinyl and a low 1,4-trans-double bond content, which are useful in the manufacture of tire treads and carcasses, are produced employing as cat...
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JPS5645928B2 |
A process for preparation of a Ziegler-type catalyst having increased activity comprises admixing titanium tetrachloride, trihydrocarbyl aluminum and an ether, aging the mixture followed by addition of a dihydrocarbyl aluminum chloride p...
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JPS5642608B2 |
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JPS5618127B2 |
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JPS5618130B2 |
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JPS5618128B2 |
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JPS5618129B2 |
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JPS5618002B2 |
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JPS5618004B2 |
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JPS5618006B2 |
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JPS5618005B2 |
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JPS5610322B2 |
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