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Matches 501 - 550 out of 5,686

Document Document Title
WO/2003/082932A1
A catalyst composition for the polymerization of conjugated dienes which comprises (A) a metallocene-type complex represented by the general formula (I): (C5R1R2R3R4R5)aMXb·Lc (wherein M is a rare earth metal; C5R1R2R3R4R5 is substitute...  
WO/2003/078482A1
A diene rubber (A) having a weight-average molecular weight (Mw) of 100,000 to 3,000,000, a weight-average molecular weight/number-average molecular weight ratio (Mw/Mn) of 1.30 to 2.50, and a weight-average molecular weight/peak top mol...  
WO/2003/072617A1
A process for synthesizing syndiotactic 1,2-polybutaidene, the process comprising the steps of (1) polymerizing monomer consisting essentially of 1,3-butadeine monomer within an organic solvent that includes at least 50% by weight of ali...  
WO/2003/070797A1
A conjugated diene rubber which comprises 40 to 99.9 wt% of units of a conjugated diene monomer, 0 to 59.9 wt% of units of an aromatic vinyl monomer, and 0.1 to 20 wt% of units of a polar monomer and having a Mooney viscosity (M1) of 20 ...  
WO/2003/068831A1
A bicyclic conjugated diene polymer obtained by polymerizing a bicyclic conjugated diene monomer component comprising at least one compound represented by the general formula (I); and a bicyclic conjugated diene copolymer obtained by cop...  
WO/2003/064480A1
Polymers produced by copolymerizing a conjugated diene monomer with an &agr ,β-unsaturated nitrile monomer in the presence of a mercapto-bearing molecular weight modifier and having a residue of the molecular weight modifier of 40 ppm o...  
WO/2003/064484A1
This invention relates to metal complex compositions, their preparation and their use as catalysts to produce polymers of conjugated dienes through polymerization of conjugated diene monomers and copolymers of conjugated dienes with arom...  
WO/2003/054028A1
The present invention relates to catalyst systems of the Ziegler-Natta type, to a process for preparing them, to their use for the polymerization of olefins and to ethylene copolymers which can be prepared using this catalyst system.  
WO/2003/053899A1
A specific diene compound (1) having high−purity is obtained, without using any special reagent or complicated technique, from a mixture of the diene compound (1) and a compound (2) which is difficult to separate by distillation and ha...  
WO2002077045A3
A process for producing polymer particles in a gas phase polymerization reaction using a group 4 metal complex containing delocalized pi -electrons and optionally a flow aid.  
WO/2003/044065A2
Disclosed is a method for the production of optionally coupled, non-blocking polymers based on conjugated dienes and optionally monovinyl aromatic compounds by anionic polmerization in an inert organic solvent in the presence of a lithiu...  
WO/2003/033545A2
This invention relates to metal complex compositions, their preparation and their use as catalysts to produce polymers of conjugated dienes through polymerization of conjugated diene monomers. The used metal complex compositions are tran...  
WO2002085952A3
The invention relates to polymers which are modified along a polymer chain on the basis of conjugated dienes or conjugated dienes and vinyl aromatic compounds having a proportion of vinyl aromatic compounds of up to 60 wt. %, a proportio...  
WO/2003/018644A1
A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) an iron-containing compound, (b) an $g(a)-acylphosphonate diester, and (c) an organoaluminum compound.  
WO/2003/017732A1
In a method of making an organic electroluminescent device, a transfer layer is solution coated on a donor substrate. The transfer layer includes a polymerizable, amorphous matrix with a light emitting material disposed in the matrix. Th...  
WO2002060958A3
The present invention provides functionalized electrophiles, their analogous initiators, and processes for preparing these compounds. The present invention also relates to homotelechelic, heterotelechelic, and radial functional polydiene...  
WO/2003/010214A1
An emulsion polymerization process for the preparation of polybutadiene grafted with styrene and acrylonitrile monomers in a reaction system is provided. The resultant product has a low end content of unreacted residual monomers, low yel...  
WO/2003/008470A1
The invention concerns a linear or branched diene elastomer having cyclic vinyl units. The inventive linear diene elastomer is derived at least from a conjugated diene, and comprises cyclic vinyl units in a weight proportion not less tha...  
WO/2002/102861A2
A process is described for the homo- and co-polymerization of conjugagted dienes characterized in that it is carried out in the presence of a catalytic system comprising a complex having general formula (II): Fe(L)n(X)s wherein n is an i...  
WO/2002/085952A2
The invention relates to polymers which are modified along a polymer chain on the basis of conjugated dienes or conjugated dienes and vinyl aromatic compounds having a proportion of vinyl aromatic compounds of up to 60 wt. %, a proportio...  
WO/2002/081082A1
A catalyst composition that is the combination or reaction product of ingredients including a halogen-containing iron compound or an iron-containing compound and a halogen-containing compound; a silyl phosphonate; and an organoaluminum c...  
WO/2002/079267A1
A process for the manufacture of a baleable lithium carboxylate polymer. The process includes polymerizing at least one conjudated diene in the presence of an organolithium initiator to a substantial completion. Thereafter, the polymeriz...  
WO/2002/077045A2
A process for producing polymer particles in a gas phase polymerization reaction using a group 4 metal complex containing delocalized $g(p)-electrons and optionally a flow aid.  
WO2002020623A9
The invention concerns a method for preparing a dilithium initiator for use in anionic polymerisation, a method for preparing by anionic polymerisation a living diene elastomer provided with a carbon-lithium group at each of its chain en...  
WO2001004164A3
Organic compounds are hydrogenated in the presence of certain bis(pentadienyl) divalent Group IV metal complexes having pi -bound, neutral, conjugated diene ligands. These complexes are effective hydrogenation catalysts for polymers cont...  
WO/2002/068484A1
A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a...  
WO/2002/066523A1
A catalyst composition that is the combination of or reaction product of ingredients that include an iron-containing compound, a silyl phosphonate, and an organoaluminum compound is provided. This composition can be used to catalyze the ...  
WO/2002/064648A1
Provided are polymers which have high Tg's and main chains of fluorinated alicyclic structures containing functional groups in such high concentrations that the functional groups can sufficiently exhibit their characteristics, and proces...  
WO2001068716A3
The invention is related to a novel compound represented by NdHA4 wherein A is a carboxylate, and to a diene polymerization catalyst using the novel compound. NdHA4 has monomeric structure and does not contain water, bases and salts. NdH...  
WO2002028933A3
A polymer composition includes at least two end segments that make up less than 15 % of the total polymer composition. Each end segment has a vinyl content greater than about 45 %. However, the vinyl content is less than about 35 % throu...  
WO/2002/062860A1
The invention relates to a continuous method for producing elastomers on the basis of conjugated dienes or on the basis of conjugated dienes and vinyl-aromatic compounds or on the basis of alkenes. The polymerization proceeds in the reac...  
WO/2002/060958A2
The present invention provides functionalized electrophiles, their analogous initiators, and processes for preparing these compounds. The present invention also relates to homotelechelic, heterotelechelic, and radial functional polydiene...  
WO2002030997A3
A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formula CoAx, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chl...  
WO/2002/050139A1
Butene oligomer derivatives carrying tert-butyl groups as one of the terminal groups, having a repeating unit of the main hydrocarbon chain consisting of 80% by mol or more of CH¿2?C(CH¿3?)¿2?-, and carrying the other terminal groups ...  
WO2002020629A3
The invention relates to the use of novel catalysts containing a metal-free cyclopentadienide compound and a transition metal compound for the polymerisation of unsaturated compounds, particularly conjugated dienes. The use of methyl alu...  
WO2001038408A3
The invention relates to a method for producing polymers on the basis of 1,3 dienes by radical polymerization of cyclodextrin-complexed 1,3 dienes and optionally further unsaturated monomers which can optionally also be cyclodextrin-comp...  
WO/2002/048218A1
The invention concerns a method for obtaining a polyisoprene having a high cis-1,4 chaining, from an isoprene-enriched C5 cut derived from steam cracking of naphta. The inventive method essentially consists in reacting a catalytic system...  
WO2001092346A3
A catalyst composition for the polymerization of olefins is provided, comprising a cyclopentadienyl transition metal catalyst precursor and an activating co-catalyst.  
WO/2002/038615A1
A functionalized polymer prepared by a process comprising the steps of preparing a pseudo-living polymer by polymerizing conjugatd monomer with a lanthanide-based catalyst, and reacting the pseudo-living polymer with a functionalizing ag...  
WO/2002/034722A1
New 1,2,3- or 1,2,3,4- or 1,2,3,4,5- substituted imidazolium salts and their uses as solvent in catalysed organic reactions, as well as compositions containing them and a transition metal compound. They can be used in the following react...  
WO/2002/030997A2
A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formula CoA¿x?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum ...  
WO/2002/028933A2
A polymer composition includes at least two end segments that make up less than 15 % of the total polymer composition. Each end segment has a vinyl content greater than about 45 %. However, the vinyl content is less than about 35 % throu...  
WO/2002/028920A1
Disclosed herein are methods for producing a polymer. One polymerizes monomers selected from alkene monomers and terminal alkyne monomers, in the presence of a catalyst which is a silylene. The catalyst can be a heterocyclic amido silyle...  
WO/2002/028776A1
The additive compound of a carboxylic acid and a halide or of a rare earth or gallium halogenocarboxylate of the same acid is obtained by a method which consists in reacting with HX, X representing a halogen, and in a solvent selected am...  
WO/2002/024825A1
The invention relates to an adhesive composition based on polychloroprene dispersions and having improved adhesive properties, a method for the production of said composition, and the use thereof as a contact adhesive for inorganic and o...  
WO/2002/024764A1
Anionic polymerization initiators usful in the preparation of polymers having a protected amine functional group. The amine functionality includes a first protecting group, which can be aralkyl, methyl, allyl or tertiary alkyl group. The...  
WO2001096425A3
A butadiene-type polymer suitable for use as a processing aid in a rubber composition is formed by polymerizing butadiene or other conjugated diene monomers in a solvent, such as hexane, to form a polymer of relatively low molecular weig...  
WO/2002/020623A1
The invention concerns a method for preparing a dilithium initiator for use in anionic polymerisation, a method for preparing by anionic polymerisation a living diene elastomer provided with a carbon-lithium group at each of its chain en...  
WO/2002/020629A2
The invention relates to the use of novel catalysts containing a metal-free cyclopentadienide compound and a transition metal compound for the polymerisation of unsaturated compounds, particularly conjugated dienes. The use of methyl alu...  
WO2001079470A3
A catalyst composition that is the combination of or the reaction product of ingredients including (a) a molybdenum-containing compound, (b) a hydrogen phosphite, and (c) a blend of two or more sterically distinct organoaluminum compound...  

Matches 501 - 550 out of 5,686