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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...
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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-...
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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, ...
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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...
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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...
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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...
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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...
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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...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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.
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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WO/1995/005401A2 |
A continuous process is disclosed for polymerising anionically (co)polymerisable vinyl or diene compounds in solution in a reaction zone designed as a flow tube by using an organometallic initiator. The reaction runs substantially withou...
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WO/1995/004766A1 |
Highly resilient xanthogen disulfide-modified chloroprene copolymers and blends thereof with sulfur-modified chloroprene polymers are provided which are particularly adapted for use in high temperature dynamic applications such as in eng...
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WO/1995/004090A1 |
A modified conjugated diene polymer which is obtained by preparing a conjugated diene polymer in an organic solvent in the presence of a lanthanoid rare earth metal compound as the catalyst and modifying the terminal group(s) thereof wit...
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WO/1995/004026A1 |
Compounds of general formula (I) characterised in that R1 and R2 are independently selected from the group consisting of COOR, CN, aryl, substituted aryl, COOH, halogen, C(O)NHR4, C(O)NR5R6; X and Y are independently selected from the gr...
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WO/1995/004109A1 |
Aqueous dispersions which are particularly well suited for use as aqueous ink jet ink compositions having an aqueous carrier medium which comprises water or a mixture of water and at least one organic solvent; a particulate solid, prefer...
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WO/1995/000526A1 |
Novel titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, pi-bonded, group, said complexes corresponding to formula (I), wherein: M is titanium or zirconium in the +2 formal oxidation state; L is a gr...
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WO/1994/029354A1 |
The invention concerns polydienes obtained by the anionic polymerization of a diene using a bifunctional Li initiator and subsequent polymer-analogous reaction, containing at least one ethanolamine or oligoether-ol-amine terminal group o...
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WO/1994/026682A1 |
Pure 1,4-dienes are produced at high rates of reaction by reacting a conjugated diene and an alpha monoolefin at a temperature below 70 �C in the presence of a catalyst comprising a 1,3-bis-(diphenylphosphino) propane ligand of Co(II) ...
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WO/1994/020553A1 |
Hydrogenated butadiene polymers having terminal silyl groups are prepared from a (4-vinylphenylene)dimethyl(t-butyl)silyl ether which is added to the polymer chain as a silyl ether initiator or an endcapping agent, or both. The silyl gro...
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WO/1994/014854A1 |
The invention relates to a catalyst that is suitable for the preparation, via a Ziegler polymerisation, of an olefine polymer, comprising an organometallic compound and a transition metal-imidoaryl complex, characterised in that the comp...
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WO/1994/014820A1 |
This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which pro...
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WO/1994/012547A2 |
Catalysts derived from the reaction of Cp*2ZrMe2 with B(C6F5)3 or [N,N-dimethylanilinium][B(C6F5)4] (denoted as [Cp*2ZrMe]+X-, Cp* = pentamethylcyclopentadienyl, X = B(C6F5)4 or CH3B(C6F5)3) are active for the homopolymerization of funct...
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WO/1993/017073A1 |
Chloroprene/sulfur copolymers peptized either by xanthogen sulfides alone or in combination with mercaptobenzothiazole in an alkaline dispersion are cured in the presence of N-cyclohexyl-2-benzothiazyl-sulfenamide or mercaptobenzothiazol...
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WO/1993/010183A1 |
Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80 % by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a non-functionalised polymer containing a low Tg ...
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