Synthetic resins or natural rubbers -- part of the class 520 series inventions 07/06

20060167192 - Process for the production of linear low-density polyethlene composition: A process for producing bimodal linear low-density polyethylene polymer compositions, useful for making films. The polymer compositions have a melt flow rate MFR2 of 0.4 to 1.0 g/10 min and a density of 918 to 925 kn/m3. The process to produce the polymer compositions involves copolymerising ethylene with an alpha-olefin...

20060167193 - Regulation of the continuous ethylene polymerization process in a high-pressure reactor: Method of regulating the process for the continuous free-radical polymerization of ethylene in the presence or absence of comonomers in a tube reactor having at least one reaction zone (1, 2, 3, 4) at pressures above 1000 bar and temperatures in the range from 100 to 400° C., wherein a...

20060167194 - Catalyst composition and polymerization process using mixtures of selectivity control agents: A catalyst composition for the polymerization of olefins and process for the use thereof, comprising the combination of one or more Ziegler-Natta catalysts, comprising one or more transition metal compounds, one or more aluminum containing cocatalyts, and a mixture of different selectivity control agents, including in said mixture of selectivity...

20060167195 - Process for the copolymerization of ethylene: A process for producing a copolymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins of formula CH2═CHA, wherein A is a C2-C20 alkyl radical, comprising contacting, under polymerization conditions, ethylene and one or more alpha-olefins in the presence of a catalyst...

20060167196 - Novel transition metal compound, catalyst for olefin polymerization and method for producing polyolefin: A novel transition metal compound wherein the transition metal belongs to group 4 of the periodic table and the transition metal compound has a hydrogen atom ligand and three cyclopentadienyl ligands comprising at least one substituted cyclopentadienyl ligand. The novel transition metal compound can be used as a component of...

20060167197 - Photosensitive compositions based on polycyclic polymers: where X is selected from —CH2—, —CH2—CH2— and O; m is an integer from 0 to 5; and each occurrence of R1-R4 are independently selected from H; C1 to C25 linear, branched, and cyclic alkyl, aryl, aralkyl, alkaryl, alkenyl and alkynyl that can include one or more hetero atoms selected...

20060167198 - Production method of water-absorbent resin: A production method of a water-absorbent resin includes the steps of: obtaining a hydrogel by supplying monomer liquid to a reaction device so that the monomer liquid is polymerized; and detaching the hydrogel from the reaction device, wherein the reaction device's surface in contact with the monomer liquid at a...

20060167199 - Process for produciton of living radical polymers and polymers: p

20060167200 - Active energy ray curable composition for coating optical disk and optical disk: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured...

20060160962 - Olefin polymerization process: A process for polymerizing one or more alpha-olefins of formula CH2═CHT wherein T is a hydrogen atom or a C1-C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein:...

20060160963 - Crystalline polymers of propylene having improved processability in the molten state and process for their preparation: Crystalline polymers and copolymers of propylene having total MIL values>2 g/10 minutes, total [η] values in tetrahydronaphthalene at 135° C.≦2.8 dl/g, Mw/Mn values>20, a fraction insoluble in xylene at 25° C.≧94, and including from 10 to 60% by weight of a fraction (A) having [η]≧2.6, are prepared by way of...

20060160964 - Metering of catalysts: To meter catalysts into a reactor, the catalyst is firstly suspended in a hydrocarbon in a reservoir and the suspension obtained is kept in motion by stirring and then fed via a three-way metering valve and an ejector into the actual reactor, wherein the suspension containing the catalyst is firstly...

20060160965 - Process for transitioning between ziegler-natta-based and chromium-based catalysts: Embodiments of our invention relate to processes for transitioning among polymerization catalyst systems including processes for transitioning among olefin polymerization reactions using Ziegler-Natta catalysts systems and chromium-based catalyst systems. Among embodiments contemplated are a method of transitioning from a first catalyst to a second catalyst in an olefin polymerization reactor,...

20060160966 - Propylene ethylene polymers and production process: Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst....

20060160967 - Halogen substituted metallocene compounds for olefin polymerization: A metallocene compound comprising a transition metal, a first substituted or unsubstituted indenyl or fluorenyl ligand pi-bonded to the transition metal, a second monoanionic ligand bonded to the transition metal, and a divalent bridging group bonded to the indenyl ligand and said second monoanionic ligand, wherein said bridging group is...

20060160968 - Process for producing substituted metallocene compounds for olefin polymerization: A process for producing a substituted metallocene compound comprises reacting a first compound with a transfer-agent, wherein the first compound comprises a complex of a transition metal atom selected from Group 3, 4, 5 or 6 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal...

20060160969 - Catalytic system for obtaining conjugated diene/monoolefin copolymers and these copolymers: where Ln represents a lanthanide atom to which is attached a ligand molecule comprising cyclopentadienyl Cp and fluorenyl Fl groups linked to one another by a bridge P of the formula MR1R2, M is an element from column IVa of Mendeleev's periodic table and R1 and R2 each represent alkyl...

20060160970 - Photoreactive polymer and process of making the same: Provided are a photo reactive polymer that includes a multi-cyclicmulticyclic compound at as its main chain and a method of preparing the same. The photoreactive polymer exhibits excellent thermal stability since it includes a multi-cyclicmulticyclic compound having a high glass transition temperature at as its main chain. In addition, the...

20060160971 - Method for anionic polymerisation of $g(a)-methylstyrene: Process for preparing homopolymers of α-methylstyrene, or copolymers of α-methylstyrene and comonomers, by anionic polymerization in the presence of an initiator composition, which comprises using an initiator composition in which potassium hydride and at least one organylaluminum compound are present....

20060160972 - Functionalized fluoromonomers and their copolymers with vinylidende fluoride: Functionalized fluoromonomers corresponding to the following chemical formula: CF2═CF—(CH2)3—Si(OR)3 with R=methyl or ethyl group (I); process for the synthesis of these monomers; copolymers based on these monomers and on VF2 and crosslinking of these polymers in the presence of water....

20060160973 - Process for production of a vinyl polymer terminated with a group having polymerizable carbon-carbon double bond: An object of the present invention is to provide a process for producing a vinyl polymer terminated with a group having a polymerizable carbon-carbon double bond with improved stability of quality. The present invention provides a process for producing a vinyl polymer terminated with a group having a polymerizable carbon-carbon...

20060160974 - Novel polyvinyl esters: The present invention relates to polymers having specific geometries based on polyvinyl esters, to initiator systems for their preparation and to a process for preparing polymers which have specific geometries and are based on polyvinyl esters....

20060160975 - Polymer compound, polymer-containing composition containing the same: Disclosed herein are a polymer compound having at least two block segments, wherein at least one segment of the block segments contains a repeating unit structure exhibiting anionicity and a repeating unit structure exhibiting hydrophilicity, and an ink composition containing the polymer, a solvent or dispersing medium, and a coloring...

20060155080 - Injection moulding polymer: The use of a multimodal polyethylene composition comprising as comonomers to ethylene at least two C4-12 alpha olefins in injection moulding....

20060155081 - Chromium-based catalysts in mineral oil for production of polyethylene: A process for polymerizing polyethylene with chromium-based catalysts wherein one or more supported chromium-based catalysts is mixed with mineral oil to form a slurry and the slurry is then introduced into a polymerization reactor, especially a gas-phase polymerization reactor....

20060155082 - Process for producing polymers: Catalyst systems for producing olefin polymers, methods of making such catalyst systems, and processes for producing olefin polymers using such catalyst systems are provided. The catalyst system comprises a first component and a second component, where the first component comprises chromium on a support, where the support comprises phosphated alumina,...

20060155083 - Magnesium-containing carrier components and application thereof to olefin polymerization: Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 μm, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in...

20060155085 - Crosslinkable methacrylic resin composition and transparent member: wherein, in the formula, R1 and R3, and R2 and R4 represent hydrogen atoms or methyl groups at the same, respectively. The composition can provide a crosslinkable methacrylic resin which is improved in resin properties such as heat resistance, rigidity, low water absorption, chemical resistance and the like without deteriorating...

20060155084 - Polymer composition comprising nanofillers: A polymer composition comprising optionally a matrix polymer, a nano-filler, and a polyolefin with functional groups which has been prepared directly by polymerising olefin monomers with comonomers comprising functional groups using a single site catalyst....

20060155086 - Graft copolymers and method to prepare same: A thermally processable graft copolymer formed from a water soluble polymer and a water insoluble polymer, wherein the graft copolymer forms a hydrogel upon exposure to water. A method to form such a hydrogel-forming graft copolymer by copolymerizing a water soluble 2-substituted-2-oxazolines with a water insoluble 2-substituted-2-oxazoline. A method to...

20060155087 - Method for carrying out a mass polymerization: A method for carrying out a mass polymerization of monomers and/or pre-polymers, which are at least partially soluble in their polymers, in particular methyl methacrylate (MMA) is provided. The method involves the addition of at least one monomer or pre-polymer in a reactor. Mass polymerization for amorphous polymers is carried...

20060155088 - Crystalline polymer exhibiting solid phase transition phenomenon and use thereof: A crystalline polymer exhibiting crystal transition in the solid phase state, which satisfies the relationship defined by the formula 150>ΔHtr>1.6Ttr−3.5 (1) (wherein ΔHtr represents the endotherm (J/g) accompanying crystal transition and Ttr represents the crystal transition temperature (° C.)). This crystalline polymer has a weight average molecular weight of 600...

20060149003 - Preparation of polyolefins having high molecular weights in the presence of an organic transition metal compound in a gas-phase fluidized-bed reactor: Process for preparing polyolefins having high molecular weights in the presence of a catalyst comprising an organic transition metal compound in a gas-phase fluidized-bed reactor, where the polyolefins prepared have a melt flow rate at 2.16 kg and 190° C. in accordance with ISO 1133 of less than 4 g/10...

20060149004 - Method of ethylene polymerization for producing products having various properties with high productivity and a tubular reactor used therefor: A method for continuous ethylene polymerization under high pressure using a polymerization reaction zone comprises a primary reaction zone and a secondary reaction zone wherein the secondary reaction zone has a length of 1.5-6.5 times the length of the primary reaction zone and a cross-sectional area of 1.2-4 times the...

20060149005 - Process for producing rubber composition, process for producing vulcanized molded article of rubber composition, and process for producing vulcanized and foamed molded article of rubber composition: A process for producing a rubber composition, which comprises the step of kneading at least (A) 100 parts by weight of a pellet containing an ethylene-α-olefin-non-conjugated diene copolymer rubber, the pellet having a covering layer comprising a thermoplastic resin, (B) 10 to 200 parts by weight of a reinforcing material,...

20060149006 - Method for producing copolymers and terpolymers from olefins: The present invention relates to a process for the preparation of co- and terpolymers from olefins having improved properties. In particular, the invention relates to the preparation of ethylene-propene copolymers (EPR), ethylene-propylene-diene terpolymers (EPDM) and further copolymers of ethylene-propene, 1-olefins and dienes having elastomeric properties which are improved by their...

20060149007 - Method of polymerization and copolymerization of ethylene: Disclosed is a method of polymerization and copolymerization of ethylene, which is carried out in the presence of (a) a solid titanium complex catalyst prepared by the steps of (i) preparing a magnesium solution by contacting halogenated magnesium compounds with alcohol, (ii) reacting the magnesium solution with ester compound having...

20060149008 - Branched polypropylene: Provided is a method for the production of a polypropylene comprising branches in the polymer backbone, which method comprises: (a) forming macromers from an olefin monomer; and (b) polymerising propylene in the presence of the macromers and a catalyst, under polymerising conditions which favour the incorporation of the macromers into...

20060149009 - Novel polymer and process for producing the same: A polymer consisting mainly of structural units represented by the general formula (1), wherein the total molar amount of terminal aldehyde groups and acetal groups is 0.6 mol % or smaller based on the total molar amount of the structural units represented by the general formula (1). —[—(—CHR1—)n—CX1R2—CX2R3-]— (1) (In...

20060149010 - Catalyst for synthesizing high trans polymers: The process and catalyst of this invention can be utilized to synthesize homo and copolymers of conjugated diene monomers and vinyl aromatic monomers having high trans contents of greater than 60% with low melting points. These homo and copolymers of conjugated diene monomers and vinyl aromatic monomers can be utilized...

20060149011 - N-alkoxy-4,4-dioxy-polyalkyl-piperidine compounds, their corresponding n-oxides and controlled radical polymerization therewith: The present invention relates to selected 1-alkoxy-2,2,6,6 tetramethyl piperidine, 1-alkoxy-2,2 diethyl-6,6 dimethyl piperidine and 1-alkoxy-2,6 diethyl-2,3,6 dimethyl piperidine derivatives which are substituted in the 4 position by two oxygen atoms forming an open chain or cyclic ketal structure, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and...

20060149012 - Fluorochemical polymeric surfactants: Described are polymeric surfactants which include a fluorinated moiety and a non-fluorinated moiety where the fluorinated moiety contains two perfluoro-lower-alkyl sulfonamido segments in proximity to each other ; the surfactants provide more efficient and effective lowering of the surface tension of liquids and increase of wetting of a coating on...

20060149013 - Polymers that are soluble in water or can be dispersed in water and contain alkoxylated diallylamine derivatives: Water-soluble or water-dispersible polymers comprising alkoxylated diallylamine derivatives, ethylenically unsaturated mono- or dicarboxylic acids, the anhydrides thereof or mixtures thereof and, if required, one or more further ethylenically unsaturated monomers C are prepared and are used as additives in mineral building materials, in detergents or in cosmetic formulations....

20060149014 - Increased polymerization reactor output by using a specific initiator system: The invention pertains to a process to polymerize one or more monomers wherein at most 90% w/w of a safely useable amount of a first initiator is used and a second initiator is dosed at least after the start of the polymerization, in an amount such that essentially the full...