74results about How to "Good aging stability" patented technology

A single-layered three-way catalytic converter containing palladium as the only catalytically active noble metal, with high activity and heat resistance. The catalyst contains, in addition to finely divided, stabilized aluminum oxide, at least one finely divided cerium / zirconium mixed oxide and optionally finely divided nickel oxide as well as highly dispersed amounts of cerium oxide, zirconium oxide and barium oxide. The palladium is distributed largely uniformly throughout the entire catalyst.

A positive resist composition for electron beam, X-ray or EUV includes a compound having a proton acceptor functional group and capable of producing an acid radical upon irradiation with an actinic ray or radiation to reduce or lose the acceptor property or to change the proton acceptor functional group to be acidic, wherein the positive resist composition has a solid content concentration of from 2.5 to 4.5 mass %.

It is intended to provide the following resin composition for stereolithography which is superior in storage stability and aging stability during operation, shows no increase in viscosity upon prolonged storage, has a high light-curing sensitivity and, therefore, makes it possible to produce, upon photo irradiation, an object by stereolithography, which is superior in dimensional accuracy, fabricating accuracy, water resistance, moisture resistance and mechanical properties at a high fabricating speed and a high productivity. A resin composition for stereolithography which is an actinic radiation-curable resin composition containing a cationic-polymerizable organic compound, a radical-polymerizable organic compound, a photo cationic polymerization inhibitor and a photo radical polymerization inhibitor, in which the photo cationic polymerization inhibitor contains a compound represented by the following formula (I) and having a purity of 80% or higher: wherein M represents an antimony atom or a phosphorus atom; and the broken line between S+ and MF6− represents an ionic bond.

A lithographic printing plate precursor comprising a support and an image-recording layer containing at least one compound selected from the group consisting of a spiropyran compound and a spirooxazine compound, and an acid generator, and a lithographic printing method including a process of removing the unexposed area of the image-recording layer on a printing press.

PCT No. PCT / JP98 / 00676 Sec. 371 Date Nov. 10, 1998 Sec. 102(e) Date Nov. 10, 1998 PCT Filed Feb. 18, 1998 PCT Pub. No. WO98 / 40441 PCT Pub. Date Sep. 17, 1998Disclosed is water based ink having metallic luster adapted for a direct-filling ball-point pen, which is used by being directly filled into the tube, said ink comprising, based on the total amount of the ink composition, 1% to 20% by weight of a metallic color pigment comprising metallic powder and a color pigment adsorbed thereon, 0.1% to 1.0% by weight of a water-soluble or water-dispersible polymer agent which imparts pseudo-plasticity, and water, thereby providing ink satisfactory in beauty and luster and excellent in aging stability and writing properties.

A high internal water phase water-in-oil emulsified cosmetic in which, in a system formed of an oil phase including silicone elastomer, polydimethylsiloxane and polyether modified silicone and a water phase including water in an amount of 60% or greater by mass. The water phase, at least, including one nonionic surfactant having an HLB value of 14 or greater, selected from a group consisting of polyoxyalkylene alkyl ethers, polyglycerin fatty acid esters, polyoxyalkylene glycerin fatty acid esters and polyalkyleneglycol fatty acid esters, in an amount of 0.03 to 0.6% by mass, is blended with pigments including an organic pigment, in an amount of 0.05 to 8% by mass. The viscosity at the shear rate of 3.83 sec−1 at 25° C. is 1 to 100 Pa·sec, as well as an applicator with an applying part having a surface roughness Ra of 3 to 300 μm to store the cosmetic.

The invention relates to waterborne glass nano-paint containing composite nanometer nuclear particles and preparation. The paint is prepared from composite metal nanometer nuclear particles, nano-silicon dioxide modified by fluorinated alkyl silane, nano-silicon dioxide coated by nano-titania, organic silicon molecules modified by acrylic ester, modified nano-titania, waterborne polyurethane resin / polysiloxane resin composite resin, an additionally adsorbed adjuvant and other auxiliary ingredients. By certain modification and combination of composite nanometer nuclear particle ingredients andother ingredients, the performance of the paint is expanded, by mutual synergy between the ingredients, the coating material shows excellent properties, has excellent effects of high light transmitting performance, heat insulation performance, ultraviolet isolation / absorption performance, high adhesiveness, anti-aging stability, water dredging, dust prevention and self cleaning, and further has anintelligent energy-saving effect specific to environmental temperature.

The invention provides a magnesium-lithium alloy strengthened by Ag, which is melt by pure magnesium, pure lithium, pure aluminum, pure zinc and pure silver. The weight percentage of the components of the alloy is 8 percent of Li, 2.5-3.5 percent of Al, 1.0-1.5 percent of Zn, 0.2-1.0 percent of Ag, and the rest of Mg. On the basis of maintaining high strength, the magnesium-lithium alloy can improve the plasticity, aging stability and high temperature resistance of the alloy. The novel magnesium-lithium alloy manufactured by the method of the invention has the mechanical performance of 190-260MPa of tensile strength, 160-250MPa of yield strength, 18-35 percent of extensibility, 290-470KJ / m<2> of anti-impact toughness and 1.25-1.52g / cm<3> of density at room temperature, and 130-200MPa of tensile strength, 120-180MPa of yield strength and 15-28 percent of extensibility below 150 DEG C.

The invention discloses a temperature-resisting salt-tolerant foam adjusting displacing system prepared from high-salinity formation water. The temperature-resisting salt-tolerant foam adjusting displacing system comprises the following components by weight percent: 0.5%-2% of nano-SiO2, 0.01-2% of THSB, 0.01-0.5% of HPAM, 0.01-0.3% of citrate and the balance of water. The invention discloses a preparation method of the temperature-resisting salt-tolerant foam adjusting displacing system. The preparation method comprises the following steps: firstly adding citrate and nano-SiO2 into water at 25 DEG C; stirring and then ultrasonically treating; adding THSB and stirring; adding partial hydrolysis HPAM and stirring, thereby acquiring the end product. The invention also discloses an oil displacement method adopting the adjusting displacing system. The oil displacement method comprises the following steps: (1) injecting a THSB aqueous solution on a prepositioned pretreated section into stratum; (2) injecting an adjusting displacing system and a pure nitrogen system of a main section into stratum; (3) injecting a nano-SiO2 aqueous solution on a post-positioned protection section into stratum; (4) closing well for 5-10 days, opening the well and recovering production. The compound adjusting displacing system provided by the invention can be applied to high-temperature high-salinity oil deposit and has high ageing stability. Multiple alternate oil displacing sections are arranged, so that the oil displacement effect of the system is extremely promoted.

An environment protection type high-efficiency multiple mixing aerating powder for a PU rigid foam is composed of by weight 5-15 shares of HC, 2-20 shares of HFC, and 0-10 shares of adjuvant species; HC is a combination of one or more alkanes and / or cyclanes; HFC is a combination of one or more hydrofluorocarbon; and the adjuvant species is a combination of one or more fluorocarbon hydrocarbons. By means of combining a plurality of aerating powders and the assistance of the adjuvant, it is capable of obtaining a novel mixing foaming system, so as to obtain PU rigid foam with excellent combination property, especially PU rigid foam with excellent heat insulation performance.

Provided is a water-based ink composition for a writing instrument comprising at least a colorant and water, characterized by comprising an alkylene oxide-added glycerin ester in which a principal skeleton is glycerin and 60 to 150 moles of alkylene oxide is added thereto and in which the glycerin is ester-bonded with a carboxylic acid-containing substance in an amount of 0.1 to 30% by weight based on the total amount of the ink composition.

A positive resist composition for use with electron beam, X-ray or EUV and a pattern forming method using the positive resist composition are provided, the positive resist composition including: (A) a resin capable of decomposing under an action of an acid to increase a dissolution rate in an aqueous alkali solution; (B) a compound capable of generating an acid upon irradiation with actinic rays or radiation; (C) a basic compound; and (D) an organic solvent, wherein the entire solid content concentration in the resist composition is from 1.0 to 4.5 mass % and a ratio of (B) the compound capable of generating an acid upon irradiation with actinic rays or radiation is from 10 to 50 mass % based on the entire solid content.

A photosensitive resin composition includes (A) an alkali-soluble resin, (B) a polysiloxane, (C) an ethylenically unsaturated compound, (D) a photo-initiator, (E) a solvent, (F) a black pigment, and (G) a metal chelate. The alkali-soluble resin (A) includes an unsaturated-group-containing resin (A-1) obtained by subjecting a mixture containing (i) an epoxy compound having at least two epoxy groups and (ii) a compound having at least one carboxyl group and at least one ethylenically unsaturated group to polymerization.

The invention discloses a preparation method of hydrophilic polyvinylidene fluoride resin. The preparation method comprises the steps that 1, 200-400 parts of deionized water, 60-90 parts of VDF monomers, 10-50 parts of comonomers, 0.05-1.5 parts of dispersing agents, 0.1-0.5 part of chain transfer agents and 0.1-1.0 part of initiator react with one another at the stirring rotating speed of 50-80rpm, and a suspension polymerization product is obtained, wherein the reaction temperature ranges from 20 DEG C to 40 DEG C, the reaction time is 12-24 hours, and the reaction pressure is 2.0-4.5 Mpa;2, the suspension polymerization product obtained in the first step is washed, centrifugally dehydrated and dried to obtain the hydrophilic polyvinylidene fluoride resin product. The method is simplein process and suitable for industrialization. An ultra-filtration membrane prepared from the obtained product has relatively good hydrophilicity, relatively high membrane flux, long service life andgood metal ion removal effects.

Provided is a release sheet which is a non-silicone based and has a good releasing performance from a pressure sensitive adhesive layer and which is excellent in an aging stability of releasing performance.The above release sheet comprises a rubber base release agent layer provided on a substrate directly or via an undercoat layer, wherein a central line average roughness (Ra) of a substrate surface or an undercoat layer surface which is brought into contact with the rubber base release agent layer is 0.06 μm or less, and the rubber base release agent layer has a thickness of 0.01 to 5 μm.

The in-situ grain reinforced anticorrosive cast aluminum-base composite material consists of Mg 7.5-9.5 wt%, Zn 1.0-1.5 wt%, Be 0.03-0.1 wt%, Ti 0.1-0.2 wt% and TiB2 1-20 wt% except Al. The preparation process includes the following steps: 1. smelting industrial pure aluminum in crucible inside a resistive furnace, heating and covering with covering agent; 2. mixing KFB4 and KTiF6, stoving and adding into the melt via stirring; 3. taking out the side product after reaction, adding Al-Be intermediate alloy and Al-Ti intermediate alloy, and covering; 4. leading protecting gas to over the crucible liquid; 5. lowering the temperature of the molten alloy, adding industrial pure Mg and Al-Zn intermediate alloy, stirring, scumming, pumping vacuum and letting stand; and 6. low pressure casting formation. The composite material of the present invention has excellent anticorrosive strength, high plasticity and high modulus, and the present invention is suitable for industrial production.

A process for producing an inkjet ink composition is provided and includes dispersion-treating a coloring material in a non-aqueous solvent with a dispersant having no coloring material-dispersing property, the coloring material being covered with a resin insoluble in the non-aqueous solvent. An inkjet ink composition produced by the production process is provided.

The invention relates to two-component polyurethane compositions that are especially suitable for use as structural adhesives. Said compositions are constituted of a polyol component K1 and a polyisocyanate component K2, the polyol component K1 comprising at least one alkoxylated aromatic diol A1 and at least one aliphatic triol A2 and the polyisocyanate component K2 comprising at least one polyisocyanate B1.

An optical recording medium which has a substrate and, formed thereon, a recording layer containing at least two types of dye, that is, a dye A and a dye B, characterized in that the above dye A and the above dye B satisfy the following requirements (1) and (2): (1) they have a decomposition starting temperature of 150 to 250 DEG C, (2) a refractive index n(A) and an exhaustion coefficient k(A) of the dye (A) at the wave length of a laser light for recording, and a refractive index n(B) and an exhaustion coefficient k(B) of the dye (B) at the above wave length satisfy the following formulae: n(B) / n(A) > 0.7 k(B) / k(A) > 10.

The invention provides a profile controlling and displacement system. The system is prepared from, by weight, 1%-3% of nanometer titanium dioxide, 0.2%-0.9% of cetyl trimethyl ammonium bromide, 0.01%-0.3% of partially-hydrolyzed polyacrylamide and the balance water. The invention further provides a preparation method and application of the profile controlling and displacement system and a displacement method which adopts the profile controlling and displacement system and is used for oil reservoirs for reservoir oil. The profile controlling and displacement system is suitable for complex oil reservoirs with harsh conditions, has the advantages of temperature resistance and salt resistance and can achieve the excellent effect of displacement of the reservoir oils.

The present invention relates to a pigment dispersant composed of a neutralized product of a polymer (A) with α, β-unsaturated carboxylic acid as a structural unit. The acid radical in the polymer (A) is 10-99.99% (mol) as Alkali metal salts or alkaline earth metal salts, 0.01 to 5% (mol) of organic amine salts, 0 to 89.99% (mol) of free acid radicals; and for coated paper composed of the above dispersant, water and inorganic pigments pigment dispersion composition. The dispersant of the present invention enables the production of a dispersant for pigments having a lower viscosity than conventional dispersants and excellent aging stability. The dispersant of the present invention is particularly suitable as a dispersant for inorganic pigments. In addition, the dispersant of the present invention is also suitable as a dispersant of a dispersion composition for coated paper.

An organopolysiloxane emulsion composition having good age stability is prepared by (I) emulsifying a mixture comprising (A) an organopolysiloxane of formula: HO(R12SiO)nH, (B) a surfactant and (C-1) water to form a first emulsion composition and (II) effecting emulsion polymerization of the first emulsion composition in the presence of (D) an acid catalyst below 40° C. The target emulsion composition contains an organopolysiloxane product having a viscosity≧300,000 mPa·s at 25° C. and an octamethylcyclotetrasiloxane content≦3,000 ppm, and has an emulsified particle size≦500 nm.

A highly dispersed graphene organic dispersion and an application thereof are provided. A mixture is firstly provided, which includes a graphite material and an organic solvent. And then, the mixture is subjected to a peeling process at high temperature and high pressure, thereby obtaining the highly dispersed graphene organic dispersion. The highly dispersed graphene organic dispersion contains 75% or more of a single-layered graphene.