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7608671 |
Norbornene ring-opened polymer hydrogenated product and process for producing same
A norbornene ring-opened polymer hydrogenated product having a syndiotactic structure and a process for producing the same are disclosed. The ring-opened polymer hydrogenated product contains a...
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7608658 |
Amine-functionalized liquid polyisoprene
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, said process comprising the steps of: (I) heating a curable composition comprised of (1) a...
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7598330 |
Cross-metathesis of olefins directly substituted with an electron-withdrawing group using transition metal carbene catalysts
The invention pertains to the use of Group 8 transition metal alkylidene complexes as catalysts for olefin cross-metathesis reactions. In particular, ruthenium and osmium alkylidene complexes...
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7595362 |
Curable resin composition
Provided is curable resin composition which gives a cured article excellent in chemical resistance, dielectric properties, low water-absorption, heat resistance, flame retardance, and mechanical...
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7589159 |
Process for producing radical polymer
The present invention provides a process for producing a resin powder containing a radical polymer having a volume-average primary-particle diameter of 1 nm to 300 nm and containing no impurities...
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7541412 |
Process for preparation of polyolefins via degenerative transfer polymerization
Disclosed is a method of producing a polyolefin composition comprising contacting a metallocene pre-catalyst with a substoichiometric amount of a co-catalyst; adding a first olefin monomer; and...
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7540962 |
Method of preparing spheroid polymer particles having a narrow size distribution by dispersion polymerization, particles obtainable by the method and use of these particles
The invention relates to a method of preparing spheroid polymer particles having a narrow size distribution by dispersion polymerization. This method comprises the steps of: providing a two-phase...
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7533706 |
Green tire bead
Tire bead rubber compositions and tire beads made therewith are provided having good dimensional stability, processability and wire adhesion Tire bead rubber compositions containing crosslinked...
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7514516 |
Measurement and preparation of branched vinyl polymers
Disclosed are novel non-linear vinyl polymers comprised of a multifunctional peroxide, and a cross-linking agent and/or a chain transfer agent, and methods of making such polymers having: at least...
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7511106 |
Ethylene elastomer compositions
This disclosure relates to olefin polymerization processes for polymerizing ethylene, higher alpha-olefin comonomer and at least one diene, especially vinyl norbornene (VNB), and especially...
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7470744 |
Copolymers useful as demulsifiers and clarifiers
A copolymer useful as a demulsifier or water clarifier may be prepared by polymerizing at least one aromatic monomer having one or more polymerizable double bonds; at least one oleophilic monomer...
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7446151 |
Process for production of high-isoprene butyl rubber
The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less...
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7407561 |
Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking
The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water...
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7402646 |
Polymerization of diisopropenylbenzene
Processes for preparing substantially linear polymers from diisopropenylbenzenes are provided. The polymers are useful in making a variety of products, including coatings, pigment dispersing...
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7402645 |
Soluble polyfunctional vinyl aromatic polymer and method of producing the same
The present invention relates to a soluble polyfunctional vinylaromatic copolymer improved in heat resistance, resistance to thermal decomposition, solvent solubility, and processability. The...
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7390866 |
Propylene-based elastomers and uses thereof
The present invention provides curable and cured propylene-based elastomers, optionally including a diene, and having isotactic polypropylene crystallinity, a melting point by DSC equal to or less...
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7358315 |
Thermoplastic allyloxymethylstyrene-based resin
A thermoplastic allyloxymethylstyrene-based resin comprising structural units of the following formulas (I) and (II):
as repeating units, wherein R represents a hydrogen atom or a hydrocarbon...
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7348391 |
Polymeric beads for oligomer synthesis
The present invention provides solid support media for use in oligomer synthesis, methods of producing the media, and methods of using the media. In some embodiments, the processes of the invention...
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7345128 |
Peroxide curable butyl formulations
The present invention relates to a peroxide curable rubber compound comprising at least one elastomeric polymer comprising repeating units derived from at least one C 4 to C 7 isomonoolefin...
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7342053 |
Resin composition, adhesive film using the same and multilayer printed circuit board
Producing a printed circuit board, by coating a resin composition comprising an aromatic cyanate compound having two or more cyanato groups in a molecule and a radical-polymerizable resin on a...
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7339018 |
Diene-modified propylene copolymers
Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a copolymer composition that includes a diene-modified polypropylene copolymer is described,...
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7323527 |
Process for macroporous acrylic resins
A method for producing a macroporous acrylic resin in an aqueous suspension from a C 1 -C 4 alkyl acrylate, an organic solvent and a crosslinker.
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7294681 |
Mutliple catalyst system for olefin polymerization and polymers produced therefrom
This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.
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7282548 |
Process for production of high-isoprene butyl rubber
The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less...
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7265159 |
Monodisperse anion exchangers
Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.
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7241841 |
Hydrogenated copolymers of unsubstituted and substituted conjugated dienes
The random, hydrogenated copolymers according to the present invention of unsubstituted conjugated dienes and substituted conjugated dienes, having a glass transition temperature of ≦−60° C.,...
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7230059 |
Process for producing olefin copolymer
A process for producing an olefin-based copolymer, which comprises copolymerizing at least one olefin selected from the group consisting of ethylene and straight chain α-olefins, and a vinyl...
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7223828 |
Branched diene-modified crystalline polypropylene terpolymers
Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene...
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7217775 |
Emulsion particles as reinforcing fillers
A rubber composition having improved processability and which provides a vulcanized rubber exhibiting excellent wear resistance and good tensile strength to service temperatures of up to about...
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7211642 |
Thermosetting aromatic dielectric material
A polymer comprises at least two types of monomer units selected from: (1) diethynyl benzene units, (2) triethynyl benzene units, and (3) ester units. After curing, the polymer may form a condensed...
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7205370 |
Polymeric nano-particles of flower-like structure and applications
A flower-like nano-particle composition including a poly (alkenylbenzene) core and a poly (conjugated diene) or a poly(alkylene) surface layer is provided. The nano-particles have a mean average...
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7205369 |
High molecular weight cationic polymers obtained by post-polymerization crosslinking reaction
The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature...
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7193024 |
Alpha-Olefin based branched polymer
A polymer comprising units ( 1 ) derived from an alpha-olefin having at least 3 carbon atoms ( 1′ ), units ( 2 ) derived from divinylbenzene or C 1-10 hydrocarbyl substituted derivatives thereof...
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7148303 |
Butyl-type rubber with high hardness
The present invention relates to an elastomeric polymer having repeating units derived from at least one isomonoolefin monomer, at least one multiolefin monomer, at least one diisoalkenylbenzene...
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7148296 |
Capped poly(arylene ether) composition and process
A thermoset composition exhibiting reduced water absorption in the cured state includes an olefinically unsaturated monomer and a capped poly(arylene ether) prepared by the reaction of an uncapped...
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7135533 |
Ethylene, higher alpha-olefin comonomer and dienes, especially vinyl norbornene and polymers made using such processes
This invention relates to olefin polymerization processes for polymerizing ethylene, higher alpha-olefin comonomer and dienes, especially vinyl norbornene, and especially process for producing...
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7119157 |
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...
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7101936 |
Olefin polymerization process to produce branched polymer compositions
A method of lowering MFR response of a high-melt-flow-rate-polymer-producing metallocene catalyst is provided. The method includes contacting the metallocene catalyst with a sufficient quantity of...
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7094847 |
Metallocene compounds and use thereof in catalysts for the polymerization of olefins
A class of bridged or unbridged metallocene compounds is disclosed, wherein the cyclopentadienyl ligands have two or four adjacent substituents forming one or two alkylenic cycles of from 4 to 8...
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7084228 |
Rubber composition for a tire tread
A cross-linkable or cross-linked rubber composition usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The composition is...
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7038000 |
Process for preparing propylene copolymers
There is provided a process for the copolymerisation of propylene with at least one C 4-20 α-olefin or C 4-20 diene in a reaction medium in the presence of a catalyst system at a temperature of...
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7037997 |
Vinyl monomer, support matrix and its preparation
A vinyl monomer of the structure R—B—Ar(—CH═CH 2 ) n (1) in which Ar is an aromatic ring (arylene group); n is an integer >0, in particular one or two; B is a bridge structure; R is a...
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7034096 |
Ring-expansion of cyclic olefins metathesis reactions with an acyclic diene
This invention relates generally to synthetic procedures that include the step of ring-opening metathesis of cyclic olefins and reaction with an acyclic diene co-reactant to produce olefin...
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7022793 |
Process for the treatment of polymer compositions
A process for the preparation of heterophasic elastomeric polymer comprising the step of polymerizing ethylene, an alpha-olefin CH2═CHL, where L is an alkyl, cycloalkyl or aryl radical with...
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7022789 |
Telechelic alkadiene polymers with crosslinkable end groups and methods for making the same
The present invention relates to telechelic polymers having crosslinkable end groups of the formula
and methods for preparing the same wherein n is an integer;
is an alkadienyl group; Y is...
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7015281 |
Alkali-stable hydrophilic sorbents for ion-exchange chromatography
The invention concerns alkali-stable hydrophilic sorbents for ion-exchange chromatography. The invention is characterized in that it consists in using as base material a crosslinked vinyl...
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7005492 |
Copolymer rubber, and foamed article, vulcanized rubber, profile extrusion molded rubber and hose for water comprising said copolymer rubber
There is provided an ethylene-α-olefin-non-conjugated diene copolymer rubber satisfying the following requirements (1) to (4):
(1) a ratio of a Z-average molecular chain length (Az)...
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7005491 |
Propylene diene copolymerized polymers
A method of lowering MFR response of a high melt flow rate polymer producing metallocene catalyst is provided. The method includes contacting the metallocene catalyst with a sufficient quantity of...
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6982309 |
Synthesis of branched styrenic copolymers with p-t-butylstyrene
It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of p-t-butyl styrene (TBS) and optionally at least one di-olefinic substituted...
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6982302 |
Molding for automobile
An automotive molding, which is excellent in scratching resistance, has high gloss, and is excellent in weathering resistance. The automotive molding of the invention has a part composed of an...
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