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Kuraray Co., Ltd. Patents
Assignee:
Kuraray Co., Ltd.
Address:
Kurashiki, JP
No. of patents:
878
Patents:


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18


Patent Number Title Of Patent Date Issued
6894114 Block copolymer May 17, 2005
A block copolymer is obtained by anionic polymerization, includes two or more polymer blocks A miscible with each other, and at least one (meth)acrylic ester polymer block B immiscible with the polymer blocks A, has a ratio [Mn(A.sub.max)/Mn(A.sub.min)] of 2 or more, wherein the ratio
6890436 Porous hollow fiber membranes and method of making the same May 10, 2005
A porous hollow fiber membrane having a particle cutoff within the range of 1 to 10 .mu.m and a pure water permeate flow equal to or higher than 30,000 L/m.sup.2 /hr/100 kPa. This porous hollow fiber membrane can be prepared by a method including, while a spinning dope containing a base
6887930 Polyamide composition May 3, 2005
A polyamide composition comprising 50 to 90 parts by weight of (A) semiaromatic polyamides having dicarboxylic acid units containing 60 to 100 mole % of terephthalic acid units and diamine units containing 60 to 100 mole %, in total, of 1,9-nonanediamine units and/or 2-methyl-1,8-oct
6887920 Fillings and composite dental materials containing the fillings May 3, 2005
The present invention provides a filler which has high water resistance and high acid resistance, and high releasing abilities of ions such as fluorine ions, and can maintain high aesthetic appreciation for a long period of time, and a dental composite material comprising the filler,
6884483 Multilayer blow molded container April 26, 2005
Multilayer blow molded containers, which comprise a layer of an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 5 to 60% by mol and a degree of saponification of 85% or more and a layer of a resin composition (B), characterized in that the resin composition (B) com
6884482 Fuel container having excellent gasoline barrier properties April 26, 2005
A fuel container formed by bonding upper and lower sections, for which both the upper and lower sections are made by thermo-forming a multi-layer sheet that comprises an interlayer of a barrier resin (A) and inner and outer layers of a polyolefin (B), and of which the surface of the
6878789 Preparation process of acrylic acid ester polymer April 12, 2005
A process for the preparation of an acrylic acid ester polymer, includes carrying out polymerization of an acrylic acid ester or block copolymerization of an acrylic acid ester and another (meth)acrylic monomer in the presence of an organolithium compound and an organoaluminum compou
6869984 Dental composition kit March 22, 2005
The invention refers to a dental composition kit which comprises a combination of (A) a one-pack primer composition containing (a) an acid group-having polymerizable monomer and (b) an aromatic secondary amine and/or an aromatic tertiary amine, and (B) a cement composition containing
6855824 Processes for preparing quinoline derivatives and intermediates thereof February 15, 2005
The present invention provides a production method of quinoline derivative (V) ##STR1##wherein each symbol is as defined in the Specification, which includes reacting quinolinecarbaldehyde (I) with any of the compounds (II) to (IV) in the presence of a base, followed by hydrolysis.
6846868 Polyamide composition January 25, 2005
A polyamide composition comprising 100 parts by weight of (A) a semiaromatic polyamide having dicarboxylic acid units mainly composed of aromatic dicarboxylic acid units and diamine units mainly composed of aliphatic diamine units having 4 to 14 carbon atoms and containing not more t
6841618 Thermoplastic polymer composition having barrier properties January 11, 2005
The present invention provides a thermoplastic polymer composition which is obtained through dynamic vulcanization performed by mixing an ethylene-vinyl alcohol copolymer (I), a modified block copolymer (II) which comprises an aromatic vinyl polymer block and a conjugated diene polym
6838517 Method for producing ethylene-vinyl acetate copolymer and saponified product thereof January 4, 2005
The present invention provides methods for producing an ethylene-vinyl acetate copolymer and a saponified product thereof that can inhibit visible imperfections (particularly discoloration) at the time of molding by improving the process for recovering vinyl acetate. When the alcohol
6838029 Method for producing ethylene-vinyl alcohol copolymer resin January 4, 2005
The present invention relates to a method of producing an ethylene-vinyl alcohol copolymer resin.
6833099 Polyvinyl alcohol film and polarization film December 21, 2004
A polyvinyl alcohol film obtained by casting on drum, in which the variance in thickness along the TD direction of the film is 0.5 .mu.m/mm or less, the thickness of the film is within the range of 20 to 150 .mu.m, and the width of the film is at least 2 m.
6831144 Anionic polymerization process, and process for producing a polymer by the anionic polymerizatio December 14, 2004
In anionic polymerization using an anionic polymerization initiator, a tertiary organoaluminum compound (A) having in the molecule thereof a chemical structure represented by a general formula: Al--O--Ar wherein Ar represents an aromatic ring, and at least one Lewis base (B) selected fro
6831139 Method for manufacturing ethylene-vinyl acetate copolymer and apparatus for manufacturing the sa December 14, 2004
The present invention provides a method for manufacturing an ethylene-vinyl acetate copolymer (EVA) in a polymerization solution in a vessel. The polymerization solution includes ethylene, vinyl acetate, methanol and a polymerization initiator. This method includes: cooling a gas includi
6828004 Connected fastening members and process for production of resin molded article with fastening me December 7, 2004
Connected fastening members and method for mold-in articles. The connected fastening members include a plurality of mold-in fastening members each having a substrate and a predetermined number of engaging elements formed on a first or front surface of the substrate. The mold-in fastening
6822031 Resin composition and a multilayered container November 23, 2004
The present invention provides a resin composition having an oxygen scavenging function. The resin composition comprises a gas barrier resin (A), a thermoplastic resin (B) other than the gas barrier resin (A), and a compatibilizer (C), wherein the gas barrier resin (A) has an oxygen
6818731 Polyamide resin composition November 16, 2004
A polyamide resin composition contains 100 parts by weight of (A) a polyamide resin with a melting point of 270.degree. C. to 340.degree. C.; 0.2 to 20 parts by weight of (B) a compound represented by Formula (I) ##STR1## where R.sup.1 and R.sup.2 are alkyl groups having at least 9
6811874 Composite fiber November 2, 2004
A core/sheath conjugate fiber comprises a sheath component B of an ethylene-vinyl alcohol copolymer and a core component A of a different thermoplastic polymer. In its cross section, the core component A has at least 10 projections or exists as an aligned group of at least 10 flatten
6806317 Pressure-sensitive adhesive/adhesive and block copolymer suitable for use therein October 19, 2004
The present invention provides an adhesive composition containing a block copolymer, wherein the block copolymer has a polymer block (A) which is principally composed of a .alpha.-methyl styrene unit, and a polymer block (B) which is principally composed of a conjugated diene unit and of
6806305 Dispersion stabilizer for suspension polymerization of vinyl compound October 19, 2004
A dispersion stabilizer for suspension polymerization of a vinyl compound contains a modified saponified vinyl ester copolymer (A) having an ethylene content of 1 to 20 mol %, a degree of saponification of 90 mol % or more and a degree of polymerization of 100 to 3,000, a saponified viny
6803411 Polyvinyl alcohol polymer film, method of producing the same and polarization film October 12, 2004
Difference in retardation between two points separated by 1 cm along the TD direction of a polyvinyl alcohol polymer film 6 is 5 nm or less. The length of a surface for drying a polyvinyl alcohol polymer film 6 is 3 m to 200 m, and the water content of the polyvinyl alcohol polymer film
6800687 Method and apparatus for producing ethylene-vinyl acetate copolymer saponification product October 5, 2004
A method for producing a saponified ethylene-vinyl acetate copolymer (EVOH) comprises: supplying into a second reactor a solution containing the copolymer that is saponified partially with an alkali catalyst under a predetermined pressure in a first reactor; and saponifying further the
6798576 Lens sheet and method for producing it September 28, 2004
The invention relates to a lens sheet applicable to a screen for a pixel type projection TV characterized in high quality and definition and a simple producing method thereof. The inventive lens sheet has a shielding layer without any axial misalignment at front and rear sides. The lens
6797832 Process for the production of 5-oxy-7-oxabicyclo [4.1.0] hept-3-ene-3-carboxylic acid esters September 28, 2004
The present invention provides a method of producing 5-oxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic acid ester economically, industrially advantageously and efficiently in a large amount. The present invention is a method of producing 5-oxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxyli
6790985 Phosphonium salts and processes for production of and uses for the same, and phosphines deriving September 14, 2004
Phosphonium salts represented by the general formula (I) ##STR1##wherein R.sup.1 and R.sup.2 each represents a phenyl group which may be substituted by a lower alkyl group, R.sup.3 represents a phenylene group which may be substituted by a lower alkyl group, R.sup.7 and R.sup.8 each
6790964 Process for the preparation of 7-azabicyclo[4.1.0]hept-3-ene-3-carboxylic acid esters September 14, 2004
The present invention provides a method of producing 7-azabicyclo[4.1.0]hept-3-ene-3-carboxylic acid ester (VII) economically, industrially advantageously and efficiently in a large amount. The present invention relates to a production method of compound (VII), which includes reactin
6790877 Bonding compositions for dental use September 14, 2004
An antibacterial bonding compositions for dental use, which comprises (A) an antibacterial primer that comprises an antibacterial polymerizable monomer having an ethylenic unsaturated group and at least one or more cationic groups selected from the group consisting of ammonium bases,
6783852 High-absorbent polyvinyl alcohol fibers and nonwoven fabric comprising them August 31, 2004
Cross-linked polyvinyl alcohol fibers prepared from a water-soluble polyvinyl alcohol, which satisfy the following requirements: (1) a water absorption in water at 30.degree. C. ranging from 10 to 100 times the weight of the fibers; (2) a fiber diameter in water at 30.degree. C. as a r
6780931 Method for producing polyvinyl ester resin emulsion August 24, 2004
Provided is a polyvinyl ester resin emulsion which has high viscosity and has good water resistant adhesiveness, heat-resistant adhesiveness, hot water-resistant adhesiveness and storage stability, especially high-temperature storage stability, and which has good film-forming ability
6777505 Method for manufacturing ethylene-vinyl acetate copolymer and apparatus for manufacturing the sa August 17, 2004
The present invention provides a method for manufacturing an ethylene-vinyl acetate that includes: (a) introducing an ethylene containing gas and a vinyl acetate containing liquid into a heat exchanger, said gas including ethylene vaporized from a polymerization solution; (b) bring
6767976 Process for polymerizing a methacrylic ester or an acrylic ester July 27, 2004
(1) A methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of a conjugated diene compound and an organic alkali metal compound, in the presence of a tertiary organoaluminum compound having in
6767853 Fibrous substrate for artificial leather and artificial leather using the same July 27, 2004
A fibrous substrate for artificial leather, containing microfine fiber bundles, each of which is composed of 3-50 microfine fibers (A) containing an elastic polymer and having an average fineness of 0.5 denier or less and 15 or more microfine fibers (B) containing a non-elastic polymer a
6759107 Oxygen absorbing compositions and articles July 6, 2004
The present invention provides a thermoplastic resin composition having excellent oxygen absorption property. This thermoplastic resin composition comprises a thermoplastic resin (A), a multilayered polymer particle (B) and a transition metal salt (C), wherein the multilayered polymer pa
6753370 Resin composition and multilayered structure June 22, 2004
A resin composition comprises a copolymer (A) comprising ethylene as a major component produced with a single-site catalyst, and an ethylene-vinyl alcohol copolymer (B) having an ethylene content of 20-60 mol. % and a degree of hydrolysis of 95% or above, the resin composition satisf
6750268 Bonding composition June 15, 2004
A tooth treated with a bonding composition with high initial bonding strength and good bonding durability comprising a mixture of polymerizable compound having an acid group, a water-soluble film-forming agent, water, and a curing agent, in which the calcium salt of the acid is insoluble
6743891 Method for producing ethylene-vinyl alcohol copolymer resin composition June 1, 2004
The present invention provides a method for producing an ethylene-vinyl alcohol copolymer resin composition, said method comprising: a) introducing into an extruder an ethylene-vinyl alcohol copolymer resin having a water content of at least 0.5 weight % and an additional component;
6743859 Polyvinyl alcohol polymer production method and polyvinyl alcohol polymer June 1, 2004
A method of producing polyvinyl alcohol polymer, with which a high-strength polyvinyl alcohol polymer with a high degree of saponification can be obtained, the polyvinyl ester saponification process can be linked directly with the spinning process, in which the polyvinyl alcohol polymer
6740606 Laminated sheet and manufacturing method therefor May 25, 2004
A laminated sheet having electromagnetic wave shielding effects and a manufacturing method therefor are provided wherein the laminated sheet is transparent, has electromagnetic wave shielding effects and is easily manufactured, moreover, an earthing terminal can be easily connected to
6739076 Artificial leather shoe and artificial leather suited therefor May 25, 2004
One embodiment of the invention relates to a laminated sheet material, including, in order: (A) a substrate layer having an inner surface and at least a partially napped outer surface and including: an entangled nonwoven first fabric including ultrafine fibers having a fineness of
6737493 Biocompatible material May 18, 2004
To provide a biocompatible material with a high level of safety at a low cost. The biocompatible material has a polymer synthesized from monomers by an anionic polymerization, wherein the polymer has a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to a number-average molecular
6737132 Fuel container May 18, 2004
A fuel container with high fuel barrier properties is provided. The fuel container is a coextrusion blow-molded container made of a layered structure. The layered structure comprises: a barrier layer made of a barrier resin (A) and an inner layer located on an inner side of the conta
6737013 Ceramic-molding binder May 18, 2004
A ceramic-molding binder includes a vinyl alcohol polymer having an ethylene unit content of 2 to 19 mole %, a polymerization degree of 200 to 2,000, a degree of saponification of 80 to 99.99 mole %, and a carboxylic acid and lactone ring content of 0.02 to 0.4 mole %. The use of the
6733859 Napped leather-like sheet material and method of producing same May 11, 2004
A napped leather-like sheet material comprising an entangled nonwoven fabric composed of ultrafine fibers and an elastomer contained therein and having a nap made of ultrafine fibers on one or both sides thereof, which material is provided with a silk protein substance and a softening ag
6732734 Pilot balloon for balloon catheters May 11, 2004
A balloon catheter and its pilot balloon system visually indicate the state of the inflation of a balloon placed in a human body. The small pilot balloon is conveniently manufactured by blow molding utilizing substantially the same material and has substantially the same structure as
6720053 Coinjection stretch blow molded container April 13, 2004
Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance. The containers comprise a thermoplastic polyester layer (layer a) and an ethylene-vinyl alcohol copolymer la
6716934 Method for producing ethylene-vinyl acetate copolymer, saponified product of copolymer prepared April 6, 2004
The present invention provides a method for producing an ethylene-vinyl acetate copolymer (EVA) containing 5 mol % to 60 mol % of ethylene, by copolymerizing ethylene and vinyl acetate with a polymerization initiator, in which an aliphatic alcohol having not more than four carbon atoms i
6716930 Method for processing ethylene-vinyl alcohol copolymer solution April 6, 2004
A method for processing a solution of ethylene-vinyl alcohol copolymer in a solvent other than water, which involves continuously substituting a part of the solvent in the solution with water to produce a high-concentration ethylene vinyl alcohol copolymer solution without gelling, where
6700703 Transmission type screen March 2, 2004
A transmission type screen is disclosed. The transmission type screen comprises a Fresnel lens sheet, a lenticular lens sheet provided with convex black stripes on the light-exit surface, and a diffusion sheet having an uneven surface on one side thereof. In the transmission type scr
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