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| Number | Title | Issue Date |
| 6335406 | Method for production of absorbent resin excelling in durability A method for the production of (D) an absorbent resin excelling in durability, which method comprises polymerizing (A) 30% by weight to saturated concentration of (A) an aqueous water-soluble ethylenically unsaturated monomer solution containing (B) 0.005... | 01/01/2002 |
| 6087002 | Water absorbent resin A process for producing water-absorbent resins having an average particle diameter of 100 to 600 μm and a particle diameter distribution of 0.35 or less by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing... | 07/11/2000 |
| 5641847 | Oil-absorbent polymer and use therefor A swellable oil-absorbent agent formed of a cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16... | 06/24/1997 |
| 5628975 | Method for purifying exhaust gas from a diesel engine A method for purifying exhaust gases from a diesel engine is provided. The method utilizes a flow through type honeycomb catalyst having parallel through-cells and (1) a cross-sectional area at the inlet part of an exhaust gas cut by a face vertical to th... | 05/13/1997 |
| 5550096 | Catalyst for purifying nitrogen oxides from exhaust and waste gases A catalyst for the purification of an exhaust gas by the removal, through selective reduction, of nitrogen oxides present in the exhaust gas, which comprises (A) 80 to 95% by weight of a sulfur oxide-containing catalytic oxide obtained by thermally treati... | 08/27/1996 |
| 5498670 | Coating compositions containing crosslinked spherical fine particles Disclosed herein are crosslinked spherical fine particles having good toughness, elastic properties, and chemical properties, and a process for producing the same, said fine particles being obtained by radical polymerization in the suspended state of a co... | 03/12/1996 |
| 5484841 | Method for production of aqueous dispersion of long-chain alkyl graft polymer and aqueous release agent A method for the production of an aqueous dispersion of a long-chain alkyl graft polymer, which method comprises mixing an aqueous solution of a polyamine with a long-chain alkyl isocyanate and stirring the resultant mixture thereby causing reaction of sa... | 01/16/1996 |
| 5407610 | Method for molding fiber-reinforced resin In a method for molding a sheet which includes thermosetting resin materials reinforced with glass fiber or carbon fiber, the sheet includes a covering film always existing in a side which is not in contact with a mold face and, when the sheet and coverin... | 04/18/1995 |
| 5403821 | Drilling fluid additives This invention provides a drilling fluid containing additives composed of copolymers which are obtainable by an industrially favorable process and superior in heat-resisting property. Even though the additives are used in a relatively small amount, such a... | 04/04/1995 |
| 5382735 | Method of preparing alkylnaphthalene compounds A method of preparing alkylnaphthalene compounds by reaction of a compound of naphthalene or monoalkylnaphthalene with olefin in the presence of a heteropoly acid catalyst. The method enables to produce highly valuable 2-monosubstituted alkylnaphthalene c... | 01/17/1995 |
| 5374600 | Oil-absorbent polymer and use therefor A swellable oil-absorbent agent formed of cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 c... | 12/20/1994 |
| 5338810 | Method for production of acrylate and acrylate-containing polymer A method for the production of an acrylate by the neutralization reaction of acrylic acid and a basic substance, comprising sequentially (A) a step of supplying acrylic acid and said basic substance to water thereby subjecting them to a neutralization rea... | 08/16/1994 |
| 5338353 | Method for production of powder of fine inorganic particles A method for the production of powder of fine inorganic particles excellent in dispersibility in various solvents from a slurry of said fine inorganic particles containing water, which method comprises preparing a slurry as a raw material by incorporating... | 08/16/1994 |
| 5304324 | Monodispersed glycol suspension of fine inorganic oxide particles having excellent dispersion stability A monodispersed glycol suspension having excellent dispersion stability at a pH within a wide range, comprising a monodispersed suspension in a glycol of spherical fine particles of an amorphous inorganic oxide having an average particle diameter of 0.15 ... | 04/19/1994 |
| 5296650 | Method for waterproofing with a cross-linked macromolecular waterproofing agent A waterproofing agent for an optical or electric cable, formed of a cross-linked macromolecular compound containing a sulfonic acid group or a salt thereof in an amount of not less than 0.5 mg. equivalent/g and a dissociating group in an amount of not les... | 03/22/1994 |
| 5286699 | Exhaust gas purifying catalyst suppressing the generation of hydrogen sulfide and method of making the catalyst An exhaust gas purifying catalyst suppressing the generation of hydrogen sulfide obtained by coating and supporting on a honeycomb carrier of a monolithic structure a catalyst composition containing (a) activated alumina supporting platinum and/or palladi... | 02/15/1994 |
| 5284909 | Amphoteric polyelectrolyte, method for production thereof, and organic sludge dehydrater An amphoteric polyelectrolite represented by the general formula: ##STR1## wherein R1, R2, R3 and R4 are H or alkyl, R5 is H, alkyl or w-OH substituted alkyl, HY is monobasic acid, and Z is amide.... | 02/08/1994 |
| 5275759 | Zirconia sol, method for production thereof, porous ceramic-producing slurry, and porous ceramic product obtained by use thereof A highly concentrated zirconia sol is produced by a method which comprises heating an aqueous solution of a zirconium salt in the presence of urea thereby obtaining a transparent zirconia sol, concentrating the zirconium sol with an ultrafilter membrane, ... | 01/04/1994 |
| 5264495 | Method for production of salt-resistant absorbent resin A method for the production of a salt-resistant absorbent resin, which comprises subjecting an aqueous solution of at least one monomer component (A) selected from the group consisting of unsaturated carboxylic acids and salts thereof to aqueous solution ... | 11/23/1993 |
| 5262570 | Method of producing ethylenediamines A method of producing ethylenediamines represented by the general formula ##STR1## wherein R represents a hydrogen atom, or a methyl or ethyl group, which comprises reacting an aziridine compound of the general formula ##STR2## wherein R is as d... | 11/16/1993 |
| 5252184 | Additive for production of paper An additive for paper production, comprising an amphoteric polymeric electrolyte having as an essential component thereof a structural unit represented by the following general formula I: ##STR1## wherein n is an integer in the range of 1 to 5, R | 10/12/1993 |
| 5248819 | Process for recovering methacrolein In the production of methacrylic acid by the vapor phase catalytic oxidation of isobutylene, t-butanol, methacrolein isobutyl aldehyde or isobutyric acid, or mixture thereof, the reaction product gas is condensed by contact with an aqueous phase containin... | 09/28/1993 |
| 5236622 | Process for producing a monodispersed glycol suspension of fine inorganic oxide particles having excellent dispersion stability A monodispersed glycol suspension having excellent dispersion stability at a pH within a wide range, comprising a monodispersed suspension in a glycol of spherical fine particles of an amorphous inorganic oxide having an average particle diameter of 0.15 ... | 08/17/1993 |
| 5234870 | Zirconia sol and method for production thereof A zirconia sol, comprising a transparent zirconia sol obtained by hydrolysis of zirconyl ammonium carbonate and a chelating agent incorporated in said transparent zirconia sol.... | 08/10/1993 |
| 5235107 | Method of producing ethylenediamines A method of producing ethylenediamines represented by the general formula ##STR1## wherein R represents a hydrogen atom, or a methyl or ethyl group, which comprises reacting an aziridine compound of the general formula ##STR2## wherein R is as d... | 08/10/1993 |
| 5229488 | Method for manufacture of an absorbent resin An absorbent resin is produced by a method which comprises adding to 100 parts by weight of an absorbent resin powder an aqueous liquid containing 7 to 100 parts by weight of water and a reducing substance in the presence of 0.01 to 5 parts by weight of a... | 07/20/1993 |
| 5229487 | Method for metered supply of material, apparatus therefor, and method for production of hydrophilic polymer by use thereof A method for metered supply of a delivered material to the next step, which method is characterized by regulating the thickness of the material on a conveyor before the material in the process of transfer on the conveyor from the incoming end thereof to t... | 07/20/1993 |
| 5218146 | Process for production of acrylic acid A process for the production of acrylic acid by the two-stage catalytic vapor-phase oxidation of propylene with molecular oxygen, the first stage for oxidizing propylene to produce mainly acrolein and the second stage for oxidizing acrolein to produce mai... | 06/08/1993 |
| 5213665 | Process for producing 1-aminoanthraquinones A process for producing 1-aminoanthraquinones represented by formula (C) ##STR1## wherein R1 and R2, independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a h... | 05/25/1993 |
| 5211893 | Method for molding resin reinforced with fiber and moldings produced The method for molding a resin reinforced with fiber wherein a resin sheet reinforced with fiber is positioned juxtaposed a face of a mold, which is either one of a female mold or a male mold, and then hardened, but before molding, modifying the viscosity... | 05/18/1993 |
| 5212217 | Artificial marble from reactive thermoplastic, monomer and anhydride This invention is directed to a setting resin composition comprising (A) a radically polymerizable monomer, (B) a thermoplastic resin soluble or dispersible in said monomer (A), (C) an epoxy resin, (D) at least one polyfunctional carboxylic acid compound ... | 05/18/1993 |
| 5210298 | Method for production of acrylate and acrylate-containing polymer A method for the production of an acrylate by the neutralization reaction of acrylic acid and a basic substance, comprising sequentially (A) a step of supplying acrylic acid and said basic substance to water thereby subjecting them to a neutralization rea... | 05/11/1993 |
| 5206431 | Process for producing methacrylic acid A process for producing methacrylic acid, which comprises filling a plurality of catalysts of different activities into a plurality of reaction zones which have been formed in each of the reaction tubes of a fixed bed multi-tubular reactor by dividing said rea... | 04/27/1993 |
| 5194515 | Amphoteric polyelectrolite, method for production thereof, and organic sludge dehydrater An amphoteric polyelectrolite represented by the general formula: ##STR1## wherein R1, R2, R3 and R4 are H or alkyl, R5 is H, alkyl or w--OH substituted alkyl, HY is monobasic acid, and Z is amide.... | 03/16/1993 |
| 5193751 | Coloring fine particles and toner for developing electrostatic images using the same Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1-100 μm obtained by suspension polymerization to a temperature of 30° to 200° C., thereby causing the particles to fuse together i... | 03/16/1993 |
| 5192452 | Catalyst for water treatment This invention relates to a catalyst for use in water treatment and to a method for the water treatment by the use of the catalyst. The catalyst comprises a first catalyst component e.g. the oxide of titanium, silicon, aluminum and zirconium, and a second... | 03/09/1993 |
| 5190815 | Waterproofing tape comprising ethylenic sulfonate polymers A waterproofing agent for an optical or electric cable, formed of a cross-linked macromolecular compound containing a sulfonic acid group or a salt thereof in an amount of not less than 0.5 mg. equivalent/g and a dissociating group in an amount of not les... | 03/02/1993 |
| 5177260 | Method for production of acrylic acid A method for the production of acrylic acid by the vapor-phase oxidation of acrolein with a molecular oxygen-containing gas in the presence of a catalyst formed of an oxide or a composite oxide of a metal element composition represented by the following f... | 01/05/1993 |
| 5169820 | Catalyst for producing phthalic anhydride The invention presents catalysts for producing phthalic anhydride by vapor phase catalytic oxidation of orthoxylene and/or naphthalene with molecular oxygen or gas containing molecular oxygen. The catalyst is prepared by supporting a catalytic active subs... | 12/08/1992 |
| 5164459 | Method for treating the surface of an absorbent resin A method for treating the surface of an absorbent resin which comprises mixing (I) 100 parts by weight of an absorbent resin powder having a carboxyl group, (II) 0.01 to 30 parts by weight of a polyhydric alcohol, (III) 0 to 50 parts by weight of water an... | 11/17/1992 |
