Synthetic resins or natural rubbers -- part of the class 520 series inventions 05/06

20060111522 - Polymerization processes: The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons....

20060111524 - High-activity magnesium-supported catalyst and method of preparing polyolefin using the same: A high-activity catalyst used to prepare polyethylene and a method of preparing polyolefin using the same are provided. When preparing the high-activity catalyst, a specific halogenated hydrocarbon is added to control the electrical properties of catalytic active sites and provide a large steric space around the catalytic active sites. Therefore,...

20060111523 - Method for the preparation of olefin polymerization catalysts: The present invention relates to a process for the production of catalysts, particularly of Ziegler-Natta type of catalysts for olefin polymerisation, to the catalysts as such, and to their use in polymerising olefins....

20060111526 - Higher alpha-olefin copolymers and process for preparation thereof: An object of the present invention is to provide crystalline high α-olefin copolymers which have excellent compatibility with thermoplastic resins, especially polyolefins, and compatibility with lubricant oils, fuel oils or waxes, excellent miscibility with inorganic fillers and secondary processability, and which have narrow temperature ranges for melting and crystallization, and...

20060111525 - Transition metal complexes, ligands, catalysts for olefin polymerization, and process for production of olefin polymers:

20060111527 - Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands: The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature in the range from −78 to 250° C., to the corresponding metallocene...

20060111528 - Isotactic polypropylene containing polymers: Isotactic polypropylene homopolymers or segments of low polydispersity are prepared using phenoxyketimine catalysts containing N-pentafluorophenyl groups....

20060111529 - Dosing of peroxide to a suspension process wherein styrene is polymerized: The invention relates to a suspension polymerization process for the preparation of styrene-containing (co)polymers, wherein the process comprises the steps of continuously or semi-continuously dosing an initiator to the reaction mixture, said initiator having a specified half-life at the temperature of the reaction mixture to which it is dosed. The...

20060111530 - Heterocycle grafted monomers and related polymers and hybrid inorganic-organic polymer membranes: Polymers, polymer precursors, and other materials are described, having at least one heterocycle and being useful for fabrication of proton-exchange membranes (PEMs). In representative examples, the heterocycle is a fluorinated imidazole ring. The heterocycle can be chosen to have a low value of pKa, and may be a triazole ring,...

20060111531 - Chain transfer agents for raft polymerization in aqueous media: Polymers and copolymers synthesized by means that yield a narrow range of molecular weights can have different properties than polymers synthesized by conventional means. In order to obtain such polymers, however, polymerization must be controlled. One type of controlled polymerization is the reversible addition-fragmentation chain transfer (RAFT) process, which has...

20060111532 - Chain transfer agents for raft polymerization in aqueous media: Polymers and copolymers synthesized by means that yield a narrow range of molecular weights can have different properties than polymers synthesized by conventional means. In order to obtain such polymers, however, polymerization must be controlled. One type of controlled polymerization is the reversible addition-fragmentation chain transfer (RAFT) process, which has...

20060111533 - Monomer compound comprising several cationic groups, process for making the same, and polymers comprising units deriving therefrom: l

20060111534 - Method for the controlled radical polymerisation of acrylic acid and the salts thereof, polymers thus obtained and applications thereof: The present invention concerns a process for controlled radical polymerisation of acrylic acid and its salts in a reactive medium constituted solely of water. The invention also concerns homopolymers and copolymers of acrylic acid obtained by the polymerisation process. Finally, the invention concerns the use of the said homopolymers and...

20060111535 - Processes including initiation of polymerization by hydrogen atom donation: This invention relates to the polymerization of vinylically-unsaturated monomers in the presence of a chain transfer catalysts where the polymerization process is initiated with hydrogen gas or a hydrogen atom donor rather than conventional free radical initiators. This invention further relates to an improved process for the polymerization of vinylically-unsaturated...

20060106178 - Synthesis of statistical microgels by means of controlled radical polymerisation: The invention relates to a method of preparing statistical microgels. The inventive method comprises a step involving the radical polymerisation of a composition containing: at least one monoethylenically-unsaturated monomer, at least one multiethylenically-unsaturated monomer, a free radical source and a control agent. The invention also relates to first generation microgels...

20060106179 - Methods of preparing ep(d)m elastomer, of controlling yield thereof, and of recovering the same: Disclosed herein is a method of preparing an EP(D)M elastomer, which includes pre-cooling a reactive solvent to −80 to −100° C.; and polymerizing ethylene, at least one higher α-olefin having 3 to 18 carbons, and selectively, at least one conjugated or non-conjugated diene having 5 to 15 carbons, in the...

20060106180 - Polymeric stabilizing agent for water-in-oil polymerization processes: The invention comprises a polymeric amphiphilic stabilizing agent and its use in the inverse-emulsion and inverse-suspenion polymerization of acrylic monomers. The stabilizing agent produces inverse-emulsions and inverse-suspensions having good stability, polymers with high molecular weights, high solid content, low coagulum and which can be branched providing a means to prepare...

20060106181 - Method for producing allyl compound, and ether or ester compound produced thereby: A method for producing an allyl compound having a compositional formula different from that of an allyl starting material compound, which comprises reacting the allyl starting material compound with an oxygen nucleophilic agent in the presence of a catalyst containing at least one transition metal compound containing a transition metal...

20060106182 - Schrink film: A shrink film comprising a polyethylene film of thickness 5 to 500 μm, wherein the polyethylene comprises an ethylene homopolymer-copolymer mixture having a molecular weight distribution in the range of 5 to 40, and a weight average molecular weight of at least 100 kD....

20060100398 - Polymerization processes: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent....

20060100399 - Method for polymerizing olefins in a gas phase reactor using a seedbed during start-up: A method of starting up a gas phase polymerization reactor, comprising controlling an amount of hydrocarbon absorbed in a polymer seedbed during startup to avoid formation of agglomerates or sheeting on an interior wall of the reactor. A system for of starting up a gas phase polymerization reactor, comprising a...

20060100400 - Process for stopping continuous polymerization: m

20060100401 - Resins that yield low haze films and the process for their production: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are provided. Methods for preparing and using the catalyst and polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having decreased haze while...

20060100402 - Supported olefin polymerization catalyst: Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group IIIA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal halide or polymeric material or mixtures thereof characterised in that the...

20060100403 - Method of polymerizing cyclic olefins and vinyl olefins, copolymer produced by the method and optical anisotropic film comprising the same: A method of copolymerizing cyclic olefins and polar vinyl olefins, a copolymer produced by the method, and an optical anisotropic film including the copolymer are provided. According to the copolymerization method, a cyclic olefin and a polar vinyl olefin can be effectively copolymerized using a catalyst system composed of a...

20060100404 - Method of reducing a content of a residual styrene monomer in a polyol: A method of reducing a content of a residual styrene monomer in a polyol utilizes a polyol, a peroxide, an adjustment of temperature, and an application of a vacuum to separate the residual styrene monomer from the polyol. The residual styrene monomer is classified as a volatile organic compound. The...

20060100405 - Copolymer having reactive silicon-containing group and organic-inorganic hybrid polymeric material: Disclosed is a copolymer comprising a polyethylene segment which is a main chain; a reactive silicon-containing group which is a side group of the polyethylene segment; and a polycondensation segment bonded to the polyethylene segment, which is a part of the main chain together with the polyethylene segment or a...

20060100406 - Copolymers for avoiding deposits in water supply systems, production and use thereof: The invention relates to copolymers made from monoethylenically unsaturated monomers with acid groups and a further hydrophobic monomer component for the prevention of inorganic and organic deposits in water supply systems. The invention further relates to a method for production of the above....

20060100407 - Method for producing an (meth)acrylate syrup: The present invention provides a method for producing an (meth)acrylate syrup by bulk polymerization which is characterized by: a) using (meth)acrylate ester monomer; and b) using 2,4-diphenyl-4methyl-1-pentenol singly or together with a thiol chain transfer agent as a chain transfer agent, c) initiating polymerization by adding an initiator having the...

20060100408 - Method for forming contact lenses comprising therapeutic agents: The present invention relates to a process comprising (a) dosing a reactive mixture comprising at least one crosslinkable prepolymer into a mold; (b) curing said reactive mixture to form a medical device; (c) contacting, said medical device with no more than about 500 mL of solution per medical device; and...

20060100409 - Polymers with new sequence distributions: The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene, and a multiolefin, preferably a conjugated diene, more preferably isoprene, with new sequence distributions....

20060094835 - Slurry loop polyolefin reactor: The present invention discloses a slurry loop reactor comprising one or more loops, capable of improving the properties of the product by enhanced homogeneity of the circulating slurry....

20060094836 - Polyolefin production: Provided is a process for producing a polyolefin having a multimodal molecular weight distribution, which process comprises: (a) polymerising a first olefin monomer in the presence of an isomerisable metallocene catalyst, to form a first multi-modal polyolefin component; and (b) polymerising a second olefin monomer in the presence of a...

20060094837 - Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process: A method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process. The method includes maintaining the inside surface temperature of the process equipment below the dew point temperature of the gas mixture passing through the equipment....

20060094838 - Enhanced polyolefin catalyst: The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the catalyst can be altered depending on the sequence of addition of the catalyst components. The catalyst consists of compounds of...

20060094839 - Methods of using heterocycle-amine ligands, compositions, complexes, and catalysts: Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalysts have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene....

20060094840 - Catalyst system for the polymerization of olefins: An organometallic compound obtainable by contacting a compound having the following formula (I), wherein: Ra is a hydrocarbon radical; Rb, Rc and Rd, are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewis acid of formula (11) MtR13 (II) wherein Mt is a metal belonging to Group 13 of...

20060094841 - Organometal catalyst compositions: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound,...

20060094842 - Catalyst compound containing divalent tridentate ligand: R6 is hydrogen, a hydrocarbyl group, or a substituted hydrocarbyl group; x is 0, 1, 2, 3 or 4; and each Z is, independently, a group 15 atom. This invention also relates to catalyst systems comprising the above catalyst compound and a activator and the use of such catalyst systems...

20060094843 - Cyclopentane carboxylate compounds, process and intermediates for preparing the same and use thereof: wherein groups R1, R2 and R3, which are identical or different, are independently selected from the group consisting of linear or branched C1-C20alkyl, C3-C20cycloalkyl, C6-C20aryl, C7-C20alkaryl and C7-C20aralkyl. The present invention also discloses a process as well as intermediate compounds for preparing the compounds of formula (I), and use of...

20060094844 - Inclusion complexes of unsaturated monomers, their polymers and process for preparation thereof: The present invention describes water-soluble homopolymers obtained by polymerization of monomers containing multiple unsaturations. These monomers form inclusion complexes with cyclodextrins and methylated cyclodextrins. The unsaturated site involved in the formation of the inclusion complex does not take part in the polymeization reaction. After cyclodextrin is recovered, the polymer containing...

20060094845 - (meth)acrylate polymer and non-linear optical device material composition: A non-linear optical device composition includes a trifluorovinyl group containing poly(meth)acrylate that is crosslinkable and thermally stable after crosslinking. The poly(meth)acrylate composition may provide passive or active wave-guide optical capabilities. The composition may be used for an active wave guide material, such as modulator or switching device compositions. Furthermore, the...

20060094846 - N-poly (alkenyl) acrylamides and process for preparation thereof: n

20060094847 - Polymers substantially free of long chain branching: The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers substantially free of long chain branching. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene, and a multiolefin, preferably a conjugated diene, more preferably isoprene, substantially free of long...