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Matches 651 - 700 out of 5,583

Document Document Title
WO/1997/046599A1
The present invention teaches the use of particular soluble metallocene catalysts to produce stereoregular polymers in gas phase polymerizations wherein the catalysts are fed into a particle lean zone in the reactor. The metallocenes cat...  
WO/1997/046593A1
The invention features a method for preparing telechelic 1,3-diene oligomers that consists in effecting the free radical polymerization of at least one 1,3-diene with a heat sensitive polymerization initiator such as hydrogen peroxide in...  
WO/1997/042017A1
A process for producing dip-coated articles in which a heated moulding with an electrolyte adsorbing surface is dipped into an aqueous latex preparation, the latex of which is stabilised substantially by emulsifiers with anionic sulphona...  
WO/1997/036944A1
The present invention is a free radical bulk polymerization process for producing a rubber modified polymer from a vinyl aromatic monomer comprising: polymerizing the vinyl aromatic monomer in the presence of a diene rubber having at lea...  
WO/1997/036894A1
The present invention is a compound of formula (I) wherein T is a group which will either 1) react with a polydienyl lithium such that the polydiene will be terminated with the compound of formula (I), or 2) be displaced by a polydienyl ...  
WO/1997/033923A1
A process for the preparation of vinylic polymers, which comprises conducting an anionic polymerization wherein the metal of the cation counter to the carb-anion of the propagation terminal is Mg or Mg/M1 (wherein M1 is at least one alka...  
WO/1997/031028A1
A diene rubber comprising a conjugated diene polymer or a conjugated diene/aromatic vinyl copolymer having a quaternary ammonium group bearing four carbon atoms bonded to the nitrogen atom at least one end of the polymer chain which has ...  
WO/1997/026282A1
The present invention relates to macromonomer compounds having the formula (I) where R1 is hydrogen, halogen, and optionally substituted alkyl, aryl, alkylaryl or arylalkyl radical; R2 and R3, which can be similar or different, are hydro...  
WO/1997/026239A1
Vinyl monomers having polyenic side chains derived from highly unsaturated fatty acids represented by general formula: R1COOH (wherein R1 is a C9-C25 hydrocarbyl having 3 to 6 unsaturated bonds) and derivatives thereof. Such a vinyl mono...  
WO/1997/025299A1
Free radical reaction of unsaturated material, dissolved in a polar, water immiscible organic solvent, and perfluoroalkyl iodide in the presence of buffer or means for adjusting pH of aqueous phase.  
WO/1997/023520A1
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M-Qn-Z-O-[A(R1R2R3)] wherein M is an alkali metal selected from the goup consisting of lithium, sodium and pota...  
WO/1997/023521A1
The process of this invention can be utilized to synthesize polymers having a high trans microstructure. The polymers which can be prepared utilizing the procedure of this invention include high trans-1,4-polybutadiene, styrene-isoprene-...  
WO/1997/016465A1
This invention concerns novel, unsymmetrically protected, telechelically functionalized linear and star or multi-arm polymers, their optionally hydrogenated analogues, the polymers produced by selective removal of the protecting groups, ...  
WO/1997/015603A1
An emulsion polymer is disclosed by the present invention. In particular, the emulsion polymer comprises a protective colloid and a functionalized silane component which is formula (I) wherein R'' is C1-C5 alkyl, R' is C1-C5, R is SH, CH...  
WO/1997/008211A1
By utilizing the vapor phase polymerisation techniques of the present invention, numerous distinct and highly beneficial advantages are realized. For instance, cis-1,4-polybutadiene and high cis-1,4-polybutadiene rubber having a consiste...  
WO/1997/005174A1
Hetero-telechelic polymers having the formula (I): FG-(Q)d-Z-J-[A(R1R2R3)]x wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected fr...  
WO/1997/005179A1
The present invention provides novel, multi-arm or star-shaped polymers having mixed protected functional and non-functional ends, their optionally hydrogenated analogues, and the polymers produced by removal of the protecting groups. Th...  
WO/1997/005180A1
Protected functional initiators have been demonstrated to polymerize dienes and alkenyl substituted aromatics. The resultant living anions were linked with a coupling agent, such as divinylbenzene or tin tetrachloride, to afford a protec...  
WO/1997/002298A1
Disclosed herein is a process for the polymerization of ethylene, norbornenes and styrenes, by contacting in solution a selected nickel compound and a selected compound which is or can be coordinated to the nickel with the olefin(s). The...  
WO/1996/037528A1
Polycyclic addition polymers derived from norborene-type monomers are mixed with a variety of other polymers to generate families of new blends, alloys, and block copolymers.  
WO/1996/037526A1
Addition polymers containing functionally substituted polycyclic repeat units are prepared in the presence of a single or multicomponent catalyst system containing a palladium metal ion source. The catalysts are not poisoned by functiona...  
WO/1996/035509A1
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M-Qn-Z-OA(R1R2R3) wherein M is defined as an alkali metal, selected from the group consisting of lithium, sodiu...  
WO/1996/033223A1
A high yield of three-armed radial anionic polymers is produced by the process of coupling metal terminated anionic polymers with a trialkoxysilane having a silicon-hydrogen bond, preferably trimethoxysilane. The metal terminated anionic...  
WO/1996/031543A1
Catalysts consisting of: A) a rare earth alcoholate, a rare carboxylate and/or a complex compound of rare earths with diketones; B) an alumoxane; and C) an inert particulate inorganic solid with a specific area of more than 10 m2/g and a...  
WO/1996/031544A1
Conjugated dienes can be successfully gas-phase polymerised in the presence of catalysts based on rare earth allyl compounds, organic aluminium compounds and an inorganic carrier. The diene rubbers produced by this process have a high ci...  
WO1996026227A3  
WO/1996/028477A1
The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer cha...  
WO/1996/026227A2
The invention concerns a process for producing polymers of vinyl aromatic compounds at temperatures in the 0-150 �C range in the presence of catalyst systems containing as active components: (A) compounds of general formula (I): XM(Z1)...  
WO/1996/026226A1
The invention concerns catalyst systems of general formula (I) XM(Z1)z1(Z2)z2(Z3)z3, in which the substituents and indices have the following meanings: X represents C1-C10 alkyl, 5-7-membered cycloalkyl, C1-C10 alkoxy, C6-C15 aryl or com...  
WO/1996/021474A1
Polymers are made from 1,3,7-octatriene or like conjugated polyenes and a cross-linking agent having at least 2 activated double bonds such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are us...  
WO/1996/018657A1
A process for the preparation of hydrocarbon solutions of monofunctional amine initiators of general structures (II): M-Qn-Z-N(A(R1R2R3))2 or (IV), wherein M is defined as an alkali metal, selected from the group consisting of lithium, s...  
WO/1996/013526A1
The capping of anionic polymers to make functionalized polymers is improved by using alkoxy silyl compounds having protected functional groups, such as acetal groups, as the capping agent. The protected functional groups are stable under...  
WO/1996/013529A1
The invention relates to a new catalyst composition which is suitable for the polymerization of an olefin and which comprises a reduced transition metal complex and a co-catalyst. The invention is characterized in that the transition met...  
WO1995035333A3  
WO/1996/010592A1
Octahydrofluorenyltitanium metal complexes or ring substituted octahydrofluorenyltitanium metal complexes wherein the metal is in the +2, +3 or +4 formal oxidation state and activating cocatalysts or activating techniques are used to pro...  
WO1996004323A3  
WO/1996/010047A1
Selected partially fluorinated 'alpha','omega'-dienes can be (co)polymerized to form polymers in which cyclic structures are present. A novel free radical polymerization process, in which the polymer obtained is dependent on the initiato...  
WO/1996/004322A1
A process for producing polybutadiene or polyisoprene in a gas phase reactor by continuously or intermittently introducing a stream of butadiene or isoprene monomer and optionally an inert gas into a polymerization zone while maintaining...  
WO/1996/004290A1
Biscyclopentadienyl, Group 4 transition metal complexes are formed by contacting a biscyclopentadienyl Group 4 metal halide, hydrocarbyl, hydrocarbyloxy or amide complex with a conjugated diene. Uniquely, the ansa-rac diastereomer is sel...  
WO/1996/004323A2
A process for producing polybutadiene or polyisoprene in a gas phase reactor by continuously introducing a stream of butadiene or isoprene monomer and optionally an inert gas into a polymerization zone while maintaining the temperature w...  
WO/1996/004321A1
A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.  
WO/1995/035333A2
Ethylene copolymers are prepared with comonomers selected from (a) 'alpha'-olefins, (b) cycloolefins and (c) polyenes, with a content of ethylene units of between 80 and 99 mol %, a content of units derived from 'alpha'-olefin, cycloolef...  
WO/1995/026987A1
An aqueous polymerization process for the preparation of a water soluble thermoplastic resin or resins comprising heating an aqueous solution comprised of a free radical initiator, a stable free radical agent, at least one polymerizable ...  
WO/1995/022566A1
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M-Z-O-C(R1R2R3) wherein M is defined as an alkali metal, preferably lithium; Z is defined as a branched or stra...  
WO/1995/015346A1
Low viscosity poly(isoprene)polymers bearing one or two terminal hydroxyl groups having a molecular weight from 1000 to 20000, a polydispersity less than 2. The anionic polymerization of isoprene with monolithium initiators and functiona...  
WO/1995/014718A1
Living anionic polymers of unsaturated monomers are conveniently capped with oxetane or an alkyl substituted oxetane to provide terminal primary hydroxyl groups. The hydroxyl capped polymers are useful in making coatings, sealants, binde...  
WO/1995/014048A1
Addition polymers derived from norbornene-functional monomers are terminated with an olefinic moiety derived from a chain transfer agent selected from a compound having a terminal olefinic double bond between adjacent carbon atoms, exclu...  
WO/1995/013304A1
An adhesive composition containing a polyvinyl alcohol-stabilized butadiene polymer latex and a methylene donor compound. The butadiene polymer latex is prepared by an emulsion polymerization in the presence of polyvinyl alcohol. The adh...  
WO1995005401A3  
WO/1995/006669A1
Novel polymer and copolymer compositions produced from the polymerization of non-conjugated dienes have been found. The novel compositions are produced by an equally novel process comprising cyclopolymerization of non-conjugated dienes e...  

Matches 651 - 700 out of 5,583