Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Kureha Kagaku Kogyo K.K. Patents
Assignee:
Kureha Kagaku Kogyo K.K.
Address:
Tokyo, JP
No. of patents:
111
Patents:


1 2 3










Patent Number Title Of Patent Date Issued
6916939 Process for the preparation of cyclic esters and method for purification of the same July 12, 2005
The present invention provides a process for production of a cyclic ester by depolymerization of an aliphatic polyester. In the process, a mixture containing the aliphatic polyester and a specific polyalkylene glycol ether, which has a boiling point of 230-450.degree. C. and a molecular
6891048 Glycolide production process, and glycolic acid composition May 10, 2005
The invention provides a process for producing glycolide by depolymerization by heating of a glycolic acid oligomer in the presence or absence of a solvent, which process ensures stable depolymerization. The depolymerization reaction is carried out while the content of alkaline metal
6846436 Semiconductive polyvinylidene fluoride resin composition January 25, 2005
A semiconductive polyvinylidene fluoride resin composition comprising 100 parts by weight of a polyvinylidene fluoride resin, 0.03 to 10 parts by weight of at least one tetraalkylammonium salt selected from the group consisting of tetraalkylammonium sulfates and tetraalkylammonium sulfit
6762229 Polyarylene sulfide resin composition July 13, 2004
A poly(arylene sulfide) resin composition comprising a poly(arylene sulfide) and, as a modifier, an organic amide compound compounded in a proportion of 0.2 to 10 parts by weight per 100 parts by weight of the poly(arylene sulfide).
6693204 Method for purification of cyclic ester February 17, 2004
A method of refining a crystal of a crude cyclic ester comprises the steps of supplying the crude cyclic ester to a vertically extending cylindrical refiner (1) from an inlet (3) provided at a lower part of the refiner (1), agitating the crude cyclic ester by an agitator provided in the
6686048 Composite carbonaceous heat insulator February 3, 2004
A composite carbonaceous heat insulator which comprises a carbonaceous heat-insulating member having a bulk density of 0.1 to 0.4 g/cm.sup.3, a carbonaceous protecting layer having a bulk density of 0.3 to 2.0 g/cm.sup.3 and comprising a carbon fiber structure and a thermally decompo
6673403 Gas-barrier, multi-layer hollow container January 6, 2004
The invention relates a gas barrier multi-layer hollow container having a multi-layer wall structure that a thermoplastic resin layer is laminated on at least one side of a layer formed from polyglycolic acid containing at least 60 wt. % of a repeating unit represented by the following f
6641878 Optical pickup device holding container November 4, 2003
An optical pickup device-holding container, which is formed from a resin composition comprising a poly(arylene sulfide) (A) and an inorganic filler (B) and having a thermal conductivity of at least 1 W/mK; and an optical pickup device in which at least a light source, an objective lens a
6610853 N-(phenylsulfonyl)picolinamide derivatives, process for producing the same, and herbicide August 26, 2003
A herbicide containing as the active ingredient an N-(henylsulfonyl)picolinamide derivative represented by general formula (I) wherein X reprcsents a halogeno, a C.sub.1-4 alkyl, a C.sub.1-4 haloalkyl, a C.sub.1-4 alkoxy, a C.sub.1-4 haloalkoxy, a (C.sub.1-4 alkoxy)carbonyl, a [di(C.
6610766 Polyvinylidene fluoride resin composition August 26, 2003
The invention relates to polyvinylidene fluoride resin compositions comprising 100 parts by weight of a polyvinylidene fluoride resin, and 0.03 to 10 parts by weight of at least one compound selected from the group consisting of alkyl quaternary ammonium sulfates and alkyl quaternary
6545081 Synthetic resin composition April 8, 2003
A moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and at least one conductive filler (C) selected from the group consisting of a non-fibrous conductive filler and a metallic fibrous material, both, having a volume resistivity low
6545075 Thermoplastic resin composition April 8, 2003
A thermoplastic resin composition improved in compatibility, molding or forming ability, melt-flow properties and mechanical properties, which comprises 100 parts by weight of a resin component containing 40 to 99 wt. % of a poly(arylene sulfide) (A) and 1 to 60 wt. % of polyamide-imide
6469606 Coil component October 22, 2002
A coil part which is obtained by sealing at least part of the periphery of a coil with a conductor wound on a bobbin with a high heat-conductive and magnetism-impermeable resin composition, and can efficiently guide out a magnetic flux generated to the outside and efficiently radiate hea
6432516 Moistureproofing film and electroluminescent device August 13, 2002
A moistureproof film composed of a transparent multi-layer film having a layer structure that thin metal or nonmetal oxide layers (C) are respectively arranged directly or through an adhesive layer (B) on both sides of a hygroscopic resin layer (A), and having a water vapor transmiss
6416832 Packaging film or sheet July 9, 2002
The invention provides a single-layer or multi-layer packaging film or sheet having at least one layer formed of a polyamide resin composition, wherein the layer formed of the polyamide resin composition is a layer (A) formed of a polyamide resin composition comprising a copolymer nylon
6342557 Resin composition and molded or formed product January 29, 2002
A resin composition comprising a synthetic resin and a powdered magnetic material, wherein (1) the powdered magnetic material is soft ferrite powder having a rate of permeability change by temperature ranging from -0.040 to 0.010%/.degree. C. in a temperature range of from 20.degree. C.
6342282 Heat-shrinkable multi-layer film January 29, 2002
The invention provides a heat-shrinkable multi-layer film comprising at least a thermoplastic resin layer as the outermost layer (A), a gas barrier resin layer as a core layer (B) and a sealing resin layer as the innermost layer (C), and optionally an adhesive layer between the indiv
6338900 Soft magnetic composite material January 15, 2002
A soft magnetic composite material obtained by dispersing a powdered magnetic material (A) composed of soft ferrite in a polymer (B), wherein the powdered magnetic material (A) is a powdered magnetic material of a random form obtained by grinding a sintered magnetic material, and the
6271426 Process for the production of 2,6-dichloro-3,5-di(secondary or tertiary alkyl)toluene August 7, 2001
This invention relates to an improved process for producing 2,6-dichloro-3,5-di(secondary or tertiary alkyl)toluene represented by the following formula (I). The process comprises chlorinating 3,5-di(secondary and tertiary alkyl)toluene represented by the following formula (II) by re
6245437 Gas-barrier composite film June 12, 2001
A composite gas barrier film having a layer structure comprises a thermoplastic resin film laminated on at least one side of a film formed from polyglycolic acid containing at least 60 wt. % of a repeating unit represented by the following formula (1): ##STR1##wherein the polyglycoli
6238775 Transfer material-carrying member May 29, 2001
The invention relates to a transfer material-carrying member formed from a resin composition comprising at least two resins selected from the group consisting of (A) a polyester resin containing a predominant repeating unit composed of ethylene terephthalate and having a reduced viscosit
6183679 Production process for injection-molded product of polyglycolic acid February 6, 2001
The invention provides an injection-molded product of polyglycolic acid obtainable by molding a thermoplastic resin material at an injection temperature ranging from the melting point, Tm of the polymer to 255.degree. C., wherein the thermoplastic resin material comprises polyglycoli
6159416 Stretch blow molded container and production process thereof December 12, 2000
The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting
6130279 Resin composition October 10, 2000
A resin composition comprising a poly(phenylene sulfide) resin and .alpha.-alumina, wherein the composition comprises (A) 15 to 45 wt. % of a poly(phenylene sulfide) resin having a melt viscosity of 5 to 100 Pa.multidot.s as measured at 310.degree. C. and a shear rate of 1200/sec, an
6083535 Effervescent granular preparation for keeping cut flower freshness July 4, 2000
An effervescent granular preparation for keeping cut flower freshness includes an azole-substituted cyclopentanol derivative represented by formula (I) (set forth below) and 2-bromo-2-nitro-1, 3-propanediol as effective components and to a process for producing the same. The efferves
6046251 Injection-molded product of polyglycolic acid and production process thereof April 4, 2000
An injection-molded product is obtained by injection molding a thermoplastic resin material. The thermoplastic resin material comprises a polyglycolic acid homopolymer or copolymer having a repeating unit represented by the following formula (1): ##STR1## in a proportion not lowe
6001439 Stretch blow molded container and production process thereof December 14, 1999
The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting
5908917 Polyglycolic acid sheet and production process thereof June 1, 1999
The invention provides a polyglycolic acid sheet obtainable by melt-extruding a thermoplastic resin material into a sheet in a temperature range of from the melting point, Tm of the polymer to 255.degree. C., wherein the thermoplastic resin material comprises polyglycolic acid having
5897960 Laminate and production process thereof April 27, 1999
A laminate having a laminated structure of at least two layers includes a gas barrier film (A) formed from a mixture containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a sa
5853639 Oriented polyglycolic acid film and production process thereof December 29, 1998
The invention provides an oriented polyglycolic acid film formed from a thermoplastic resin material which comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## and the following physical properties: (a) the melt viscosity, .rho.* [as
5840830 Process for producing poly(arylene sulfide) November 24, 1998
The invention provides a process for producing a poly(arylene sulfide) comprising a dehydration step of heating and dehydrating a mixture containing an organic amide solvent (a), an alkali metal sulfide and water to control a water content in the mixture and a subsequent polymerization
5744576 Process for producing poly(phenylene sulfide) April 28, 1998
In a process for producing poly(phenylene sulfide), in which an alkali metal sulfide is reacted with a dihalo-aromatic compound in an organic amide solvent, the reaction is conducted through the following Steps 1 and 2, thereby efficiently providing granular, high-molecular weight po
5709951 Composite deposited film and production process thereof January 20, 1998
A composite deposited film including (A) a polymeric film substrate; (B) a deposit of an inorganic material formed on at least one side of the polymeric film substrate (A); and (C) a water-resistant film laminated on the deposit (B) and formed from a mixture containing a polycarboxylic a
5688586 Poly(ethylene oxalate), product formed of molded therefrom and production process of poly(ethyle November 18, 1997
The invention provides poly(ethylene oxalate) containing recurring units represented by the following formula (1): ##STR1## in a proportion of at least 60 basal mol %, wherein (a) the solution viscosity (.eta..sub.inh) is at least 0.25 dl/g as measured at 30.degree. C. and a poly
5683964 N-(substituted amino)imide derivatives, preparation process thereof, and herbicidal composition November 4, 1997
An N-(substituted amino)imide derivative represented by the formula (I) is a novel compound which can be utilized as an effective ingredient of herbicidal compositions. ##STR1## wherein, R.sup.1 is hydrogen atom, C.sub.1 -C.sub.4 alkyl group, C.sub.7 -C.sub.9 aralkyl group, C.sub
5650459 Poly (arylene sulfide) resin composition July 22, 1997
A poly(arylene sulfide) resin composition comprising in admixture a poly(arylene sulfide) resin and at least one nickel compound selected from the group consisting of (a) nickel carbonates, (b) nickel hydroxide, (c) organic carboxylates of nickel and (d) nickel oxide is provided. Accordi
5621026 Gas barrier film and production process thereof April 15, 1997
Disclosed herein is a gas barrier film formed from a mixture containing (A) at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products of poly(meth)acrylic acid and (B) a saccharide in a weight ratio of 95:5
5612287 N-(substituted amino) pyrrole derivatives preparation process thereof, and herbicidal compositio March 18, 1997
This invention is to provide an N-(substituted amino)pyrrole derivative represented by the formula (I): which is used as an effective ingredient of herbicidal compositions: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently hydrogen atom halogen atom, C.sub.1
5605987 Production process of alkylene thioether-arylene thioether copolymer February 25, 1997
Disclosed herein is a process for the production of an alkylene thioether-arylene thioether copolymer, which comprises copolymerizably reacting a compound having at least one alkali thiolate group and obtained by causing an alkali metal sulfide to act on a poly(arylene thioether) in
5604178 N-(substituted amino)pyrrole derivatives, and herbicidal compositions February 18, 1997
This invention is to provide an N-(substituted amino)pyrrole derivative represented by the formula (I): which is used as an effective ingredient of herbicidal compositions: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently hydrogen atom, halogen atom, C.sub.
5580542 Method of testing for nephritis December 3, 1996
Disclosed is an acetyltransferase activity measuring agent which contains an arylamine derivative. As the arylamine derivative, sodium p-aminohippurate can be used preferably. Use of the acetyltransferase activity measuring agent of this invention permits a simple and safe diagnosis
5574096 Gas barrier film and production process thereof November 12, 1996
Disclosed herein is a gas barrier film formed from a mixture containing polyvinyl alcohol and a partially neutralized product of poly(meth)acrylic acid in a weight ratio of 95:5 to 10:90, and having an oxygen permeability constant of 1.25.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .
5560988 Gas barrier laminate and production process thereof October 1, 1996
A gas barrier laminate having a laminated structure of at least two layers includes a gas barrier film (A) formed from a mixture containing polyvinyl alcohol and poly(meth)acrylic acid or a partially neutralized product thereof in a weight ratio ranging from 95:5 to 10:90, and having an
5554723 Process for production of poly(arylene thioether) containing phthalic anhydride groups September 10, 1996
A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. Th
5552479 Gas barrier film and production process thereof September 3, 1996
Disclosed herein is a gas barrier film formed from a mixture containing polyvinyl alcohol and poly(meth)acrylic acid at a weight ratio of 95:5 to 20:80, and having an oxygen permeability constant of 1.25.times.10.sup.-3 ml(STP).cm/m.sup.2.h.atm{Pa} or smaller as measured under conditions
5504096 Biocidal compositions for industrial materials April 2, 1996
Disclosed herein is a method for preventing deterioration of an industrial material by using an azole derivative represented by the following formula ##STR1## wherein X means a halogen atom or a C.sub.1 -C.sub.5 alkyl, haloalkyl, phenyl, cyano or nitro group, n stands for 0 or an int
5498662 Gas barrier film and production process thereof March 12, 1996
Disclosed herein is a gas barrier film formed from a mixture containing (A) at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products of poly(meth)acrylic acid and (B) a saccharide in a weight ratio of 95:5
5494821 Process for separating optically active 1-hydroxy-cyclopentane methanol derivatives using lipase February 27, 1996
In the present invention, an optically active cis type 1,2-diol derivative of the following formula (I) is produced by reacting a cis type 1,2-diol derivative of the formula (I) with a carboxylic acid derivative of the formula (II) in the presence of a lipase: ##STR1## wherein R.
5493063 Process for optical resolution of 1,2-diol derivatives February 20, 1996
This invention provides a process for producing an optically active 1,2-diol derivative by optical resolution. The optically active 1,2-diol derivative of the formula (I) which is capable of utilizing as an intermediate of fungicidal optically-active azole derivatives can be produced
5484876 Production process for aromatic thioether ketone/thioether sulfone copolymers January 16, 1996
Disclosed herein are an aromatic thioether ketone/thioether sulfone random copolymer comprising phenylene thioether ketone recurring units (I) and phenylene thioether sulfone recurring units (II), (a) the compositional ratio (I:II) of the recurring units (I) to the recurring units (II)
1 2 3

 
 
  Recently Added Patents
Method and system for embedded high performance reconfigurable firmware cipher
Electrostatic image forming apparatus utilizing index patterns for toner image alignment
Dynamic frequency band allocation between radio communication networks
Stool seat
Memory system having multiple address allocation formats and method for use thereof
Touch panel and display device
Stewpot
  Randomly Featured Patents
Process for preparing macrocyclic 2-halogenoketones
Three-speed transfer case
Electrical circuit arrangement for converting an electrical input variable into an impressed output electrical voltage
Method for controlling and removing solid deposits from a surface of a component of a steam generating system
Electric connector
Reflector with air pressure means
Gas-insulated switchgear
Direct execution virtual machine
Control of set/reset pulse in response to peripheral temperature in PRAM device
Reduced weight vehicle door pillar