Synthetic resins or natural rubbers -- part of the class 520 series inventions 10/06

20060241252 - Method of preventing heat exchanger fouling: P

20060241253 - Zero valent metal initiated gas-phase deposition polymerization: The present invention relates to a method for preparing polymers by gas-phase deposition polymerization, initiated by a zero valent metal and an initiator....

20060241254 - Polypropylene blends having a narrow molecular weight distribution: Provided is a polypropylene blend comprising: (a) an isotactic polypropylene component A that is crystalline and is formed using a metallocene catalyst; and (b) a syndiotactic component B that is less crystalline than component A and is formed using a metallocene catalyst; wherein said blend has a monomodal molecular weight...

20060241255 - Supported catalysts for manufacture of polymers: A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound,...

20060241256 - Use of polyethylene compositions: The use in the manufacture of a polyethylene article of a polyethylene composition comprising 20 to 50% wt of a copolymer of ethylene and a C3-20 alpha olefin comonomer and 50 to 80% wt. Of a lower weight average molecular weight ethylene polymer, the polyethylenes of the composition together having...

20060241257 - Metathesis-curable composition with a reaction control agent: A composition curable by a metathesis reaction upon mixing its components and comprising an olefin-containing substrate, a metathesis catalyst, and a reaction control agent for slowing the progress of the metathesis reaction. The metathesis catalyst is a ruthenium or osmium carbene complex catalyst having high activity and good air stability....

20060241258 - Controlled polymerization: The present invention discloses an emulsion polymerization process that comprises: (1) preparing an aqueous polymerization medium which is comprised of (a) at least one monomer, (b) a polymerization control agent, and an emulsifier, wherein the emulsifier is prepared in-situ within the aqueous polymerization medium; and (2) initiating polymerization of said...

20060241259 - Oxime ester photoinitiators with heteroaromatic groups: Compounds of the formulae (I), (II), (III) and (IV), wherein Ch1 is e.g. the formula (V) or (VI); Ch2 is the formula (VII) or (VIII); Het1 is for example furyl, thienyl, pyrrolyl, pyridyl, benzothienyl, quinolyl or bithienyl; each of which is optionally substituted; Het2 and Het2′ e.g. are furylene, thienylene,...

20060241260 - Low equivalent weight ionomer: An ionomer and a process for forming the ionomet such that the ionomer has (1) low equivalent weight (below 950, preferably between 625 and 850, and most preferably between 675 and 800) and (2) high conductivity (greater than 0.13 S/cm). In another embodiment, the invention is an ionomer having (1)...

20060241261 - Low equivalent weight ionomer: An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight (below 950, preferably between 625 and 850, and most preferably between 675 and 800) and (2) high conductivity (greater than 0.13 S/cm). In another embodiment, the invention is an ionomer having (1)...

20060241262 - Low equivalent weight ionomer: An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight (below 950, preferably between 625 and 850, and most preferably between 675 and 800) and (2) high conductivity (greater than 0.13 S/cm). In another embodiment, the invention is an ionomer having (1)...

20060241263 - Novel reactive yellow dyes useful for ocular devices: Novel azo-based reactive yellow dyes and a process for manufacturing and using ocular devices having blue light absorption properties. Intraocular lenses so produced block blue light from reaching the retina of an eye implanted with the IOL. By blocking blue light from reaching the retina, the IOL thereby prevents potential...

20060241264 - Novel reactive yellow dyes useful for ocular devices: Novel azo-based reactive yellow dyes and a process for manufacturing and using ocular devices having blue light absorption properties. Intraocular lenses so produced block blue light from reaching the retina of an eye implanted with the IOL. By blocking blue light from reaching the retina, the IOL thereby prevents potential...

20060241265 - Method of converting anionic living end to protected free radical living end and applications thereof: Provided is a method of converting an anionic living end to a protected free radical “living” end in a well-controlled manner, which enables copolymerization by plural mechanisms. The method is particularly useful for copolymerization of anionically polymerizable monomers and free radical polymerizable monomers, and therefore useful for production of PB-g-PS,...

20060235170 - Process for producing radical polymer and microapparatus for chemical reaction: An object of the present invention is to provide a method for effectively producing, within a short period of time, a radical polymer having controlled molecular weight distribution or a narrow molecular weight distribution profile, the method including polymerizing a radical-polymerizable monomer. Another object of the invention is to provide...

20060235171 - Supported hybrid metallocene catalyst, method for preparing the same, and method for preparing polyolefin using the same: The present invention relates to a supported metallocene catalyst used for preparing polyolefin whose physical properties and molecular weight distribution can be easily controlled, a method for preparing the same, and a method for preparing polyolefin using the same, more particularly to a supported metallocene catalyst wherein more than two...

20060235172 - Process for the production of polypropylene using high yield ziegler-natta catalysts: This invention relates to a process for the production of a polymer film or fibre wherein a polymer composition comprising a propylene homo- or copolymer is formed into a film or fibre, and wherein said propylene homo or copolymer is produced in a process which comprises the polymerization of propylene...

20060235173 - Process for polymerizing 1-butene: A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting a metallocene compound of formula (I) Wherein is an atom of...

20060235174 - Norbornene-type polymers, compositions thereof and lithographic processes using such compositions: Embodiments of the present invention relate generally to non-self imageable and imageable norbornene-type polymers useful for immersion lithographic processes, methods of making such polymers, compositions employing such polymers and the immersion lithographic processes that make use of such compositions. More specifically the embodiments of the present invention are related to...

20060235175 - Synthesis and characterization of novel functional fluoropolymers: Functional fluoropolymers of a fluorocarbon, interlinker and siloxane monomers have been synthesized by free radical polymerization in supercritical fluid carbon dioxide wherein the interlinker monomer is necessary for the copolymerization of the fluoromonomer and the siloxane monomer. Furthermore, the addition of a crosslinking agent to the functional fluoropolymer produces a...

20060235176 - Novel thermo-responsive water-soluble polymers for viscosity switch: A thermal responsive, water soluble copolymer is disclosed, which comprises the co-polymerization product of: (a) 0.5˜20 wt % of N-isopropyl acrylamide (NIPAAm); (b) 0.5˜20 wt % of 1-vinyl-2- pyrrolidinone (VPD); (c) 0.01˜10 wt % of acrylic acid (AA); and (d) 80˜90 wt % of acrylamide. The viscosity of.the co-polymerization product...

20060235177 - Polymerizable compound, polymer compound, composition using the same, image-forming method, and image-forming apparatus: There is provided a polymer compound including a repetitive unit structure represented by the following general formula (2): General formula (2): (where X′ represents a polyalkenyl group; A represents a linear or branched alkylene group having a carbon atom number of 1 to 15, which may be substituted; m represents...

20060229420 - Ethylene homopolymers or copolymers having good machine direction (md) elmendorf tear strength: This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use the catalyst compositions and new polyolefins. The compositions and methods disclosed herein provide...

20060229421 - Powders or manufactured articles having a surface hydrophilicity: i

20060229422 - Reduction in polystyrene foams with low vapor pressure dibasic esters: The present invention relates to a foam reduction agent comprising low vapor pressure dibasic esters and a method of using a liquid to contact with polystyrene foam wherein the higher boiling temperature of the low vapor pressure dibasic esters and contact with the liquid provides a volume reduction process and...

20060223956 - Catalyst composition with mixed sca and propylene polymerization process: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control...

20060223957 - Retarded anionic polymerization of vinyl aromatic monomers using insoluble or heterogeneous retardants: This invention is a process to manufacture high quality vinyl aromatic polymer that is essentially free of unreacted vinyl aromatic monomer using retarded anionic polymerization wherein the retardant is insoluble and can be removed from the polymerization at an intermediate stage so that the polymerization can be carried to completion...

20060223958 - Processes for producing high density polyethylene: Processes for reducing the ultra high molecular weight polymeric material content of a high density polyethylene produced with a bis-triarylsilyl chromate catalyst system are provided. Processes for reducing the gel content of articles produced from high density polyethylene are also provided. The gel content of the articles is reduced by...

20060223959 - Method for producing propylene polymer having a very high melt-flowability: The present invention relates to a method for producing a propylene polymer having a very high melt flowability, specifically to a method for producing an isotactic propylene polymer having a dramatically improved melt flowability with a relatively high production yield in convenient way, by improving the reactivity of hydrogen that...

20060223960 - Modified (mao + aluminum alkyl) activator: A cocatalyst system for olefin polymerization comprises an aluminoxane (especially methylaluminoxane, or “MAO”), an aluminum alkyl and a halogenated phenol. The preferred halogenated phenol is pentafluorophenol. The use of pentafluorophenol permits the substitution of a portion of the MAO cocatalyst (which is expensive) with inexpensive aluminum alkyl. The cocatalyst is...

20060223961 - Method of selecting polyolefins based on rheological properties: This invention relates to a method for selecting a polyolefin having a die swell within a pre-selected range, the method comprising (a) obtaining from reference samples of a plurality of polyolefin batches a data set for at least one property, other than die swell, of the polyolefin; (b) obtaining a...