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6884 results about "Maleic acid" patented technology

Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO₂CCH=CHCO₂H. Maleic acid is the cis-isomer of butenedioic acid, whereas fumaric acid is the trans-isomer. It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications.

Formaldehyde free binder

An aqueous binder composition, useful for making fiber products, especially fiberglass insulation, comprising an aqueous substantially alkaline (pH of at least 5.0) solution of a polyol and a hydrolyzed (solubilized) copolymer of maleic anhydride and a vinyl aromatic compound, preferably styrene (i.e., a SMA copolymer); the copolymer is solubilized using ammonia, a secondary alkanolamine (preferably diethanolamine (DEA)), a tertiary alkanolamine (preferably triethanolamine (TEA)), or a mixture thereof and the binder composition is cured as a consequence of cross-linking, esterification reactions between pendant carboxyls on the solubilized (hydrolyzed) copolymer (SMA) chains and hydroxyl groups of the polyol, including the diethanolamine and / or triethanolamine preferably used in the solubilization of the SMA.
Owner:GEORGIA PACIFIC CHEM LLC

Biaxial tension co-extrusion high-obstruct base material membrane and process for preparing the same

This invention provides biaxial tension coextrude resistive base material membrane and preparation method. Wherein, the membrane comprises at least a resistive layer that is at least one of PA, PVA, PVDC and MAD6, a splice layer belonged to EAA, EEA, ethylenemethacrylic acid copolymerized resin or polyolefin and neolyn resin that can combine the other tow layers, and a heat-sealing layer that is at least one of the polyolefin resin, EVA and PET; besides, there is nano inorganic material in resistive layer and or heat-sealing layer to improve performance. The product fits to package for all kinds goods.
Owner:朱春蕾 +4

Filler masterbatch used for increasing polarity of polypropylene and preparation method thereof

The invention discloses a filler masterbatch used for increasing the polarity of polypropylene and a preparation method thereof. The filler masterbatch is characterized by comprising the following components by weight percent: 50%-79% of inorganic filler, 15%-30% of carrier, 5%-17% of polar additive and 1%-3% of processing additive; and the polar additive is one or more of thermoplastic polyurethane resin (TPU), maleic anhydride grafted polypropylene, epoxy resin, ethylene acrylate, ethylene vinyl acetate, polyether amine and polybutylene polyol. In the preparation method of the invention, the added carrier can not improve the polarity of polypropylene, the inorganic filler is used to increase the rigidity of the material; the key is to introduce the polar additive with high unipolarity, thus the filler masterbatch used for increasing the polarity of polypropylene can be prepared; when the filler masterbatch is combined with the polypropylene material for production, the surface polarity of the filled and modified polypropylene material can be increased, the surface energy of the filled and modified polypropylene can be reduced, the dimension stability can be increased, the modified polypropylene material can have good paint adhesion and the material can be used to form exterior trimming parts such as bumpers and interior trimming parts such instrument panels.
Owner:KINGFA SCI & TECH CO LTD +3

Polishing fluid and polishing method

ActiveUS20050181609A1Increase chanceSuperior in dimensional accuracy and electric characteristicOther chemical processesSemiconductor/solid-state device manufacturingDevice materialSlurry
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The metal oxide dissolver contains one or more types selected from one or more acids (A-group) selected from acids of which the dissociation constant (pKa) of a first dissociable acid group is less than 3.7 and from which five acids of lactic acid, phthalic acid, fumaric acid, maleic acid and aminoacetic acid are excluded, ammonium salts of the A-group and esters of the A-group, and one or more types selected from one or more acids (B-group) selected from acids of which the dissociation constant (pKa) of a first dissociable acid group is 3.7 or more and the five acids, ammonium salts of the B-group and esters of the B-group. The metal inhibitor contains one or more types selected from the group consisting of aromatic compounds having a triazole skeleton and one or more types selected from the group consisting of aliphatic compounds having a triazole skeleton and compounds having any one of pyrimidine skeleton, imidazole skeleton, guanidine skeleton, thiazole skeleton and pyrazole skeleton. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
Owner:HITACHI CHEM CO LTD

"Green" synthesis of colloidal nanocrystals and their water-soluble preparation

InactiveUS20120205598A1Low costFacilitate different production requirementMaterial nanotechnologyConductive materialOligomerChain length
Highly monodisperse nanocrystals (including CdSe, ZnSe, PbSe, Cu2-xSe, MnSe, Zn1-xCdxSe, CuInSe2, CuInSnSe2, CdTe, ZnTe, PbTe, etc) have been synthesized by using different “green” starting materials to prepare chalcogenide (Se and Te) precursors successfully. Air-sensitive compounds (alkylphosphine, such as trioctylphosphine (TOP) and tributylphosphine (TBP)) have been eliminated to use in the entire synthetic process. As surface coating agents, amphiphilic oligomer (polymaleic acid aliphatic alcohol ester) with different alkyl chain length has been utilized to form oligomer-coated water-soluble nanocrystals.
Owner:SHENZHEN THALES SCI & TECH

Hair cosmetic and styling compositions based on maleic acid copolymers and polyamines

Disclosed are cosmetic compositions which include hair cosmetic or styling compositions, comprising: a maleic acid copolymer; a polyamine selected from polyamino acids and aminated polysaccharides; a neutralizer; and water, wherein the polyamine is present in an amount less than 0.1% by weight based on the total weight of the composition, and methods of making and using the compositions to impart or maintain hair style.
Owner:LOREAL SA

Ultraviolet crosslinked expansion type flame-retardant polyolefin cable insulation sheath material and preparation thereof

The invention discloses an insulating and sheathing material of ultraviolet light crosslinking expanding type phosphorus nitrogen flaming resistance polyolefine cables and a preparation method thereof. The invention is characterized in that polyethylene/PEMA and/or ethylene vinyl acetate or maleic anhydride grafted ethylene vinyl acetate or acid amide grafted ethylene vinyl acetate copolymer are taken as base, added with expanding type phosphorus nitrogen halogen-free flame retardants, light trigger, polyfunctional group cross linker and chemical inhibitor and matched with flaming retardant synergistic agent, antismoke agent and processing aid, and then squeezed out and pelleted into photo-crosslinking flame retardant cable materials; and then the flame retardant cable materials are melted and extruded on a cable conductor wire core and clad into an insulating layer and a sheathing layer; hereupon the ultraviolet light irradiation crosslinking is carried on the insulating layer or the sheathing layer. Via detecting, the oxygen index of the insulating layer or the sheathing layer is larger than 30%, the vertical flaming experiment passes through UL-94 V0 level, the tensile strength is larger than 12Mpa, the elongation at break is larger than 350%, and the electric volume resistivity is larger than 8*10 omega.cm.
Owner:HONGLONGJIANG ORIENT SCI & TECH +1

Copolymers of maleic anhydride or acid and fluorinated olefins

Novel copolymers of fluorinated olefins and maleic anhydride, maleic acid, dichloromaleic anhydride or dichloromaleic acid may be made by using as solvents for the maleic anhydride or acid a perfluorinated alkyl carboxylic acid, or liquid or supercritical hexafluoropropylene or carbon dioxide. The resulting polymers are useful as adhesives or compatibilizing agents for fluoropolymers, and in coatings.
Owner:THE CHEMOURS CO FC LLC

Polymerizable polymeric photoinitiators and radiation curable compositions

InactiveUS20120046376A1Simple and cost efficient procedureAvoiding unecological removal of solventInksVinyl etherPhosphine oxide
A polymerizable polymeric photoinitiator according to Formula (I):wherein:PL represents an n+m+p-functional polymeric core;n and m independently represent an integer from 1 to 30;p represents an integer from 0 to 10;o is 0 or 1;INI represents a group selected from the group consisting of a benzophenone, a thioxanthone, a carbazole, a anthraquinone, a camphor quinone, an α-hydroxyalkylphenone, an α-aminoalkylphenone, an acylphosphine oxide, a bisacyl phosphine oxide, an acylphosphine sulfide, a phenyl glyoxalate, a benzoin ether, a benzyl ketal, an α-dialkoxyacetophenone, a carbazolyl-O-acyl-oxime, an α-haloarylketone and an α-haloaryl sulfone;L3 and L4 represent a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms;A represents a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a methacryl amide, a maleate, a fumarate, an itaconate, an vinyl ether, an allyl ether, an allyl ester, a maleimide, a vinyl nitrile and a vinyl ester; andR4 represents a substituted or unsubstituted alkyl group.Radiation curable compositions containing the polymerizable polymeric photoinitiator and methods for preparing the polymerizable polymeric photoinitiator are also disclosed.
Owner:AGFA NV

Thermoplastic elastomer composition, hose comprising thermoplastic elastomer composition and process of production thereof

PCT No. PCT/JP97/03987 Sec. 371 Date Jul. 2, 1998 Sec. 102(e) Date Jul. 2, 1998 PCT Filed Oct. 31, 1997 PCT Pub. No. WO98/20068 PCT Pub. Date May 14, 1998A thermoplastic elastomer composition containing a component (A) (thermoplastic polyolefin resin), component (B) (epoxy-group-containing ethylene acrylic ester copolymer rubber), and component (C) (acid-modified polyolefin resin) comprising a continuous phase of the component (A) in which the component (B) is dispersed as a dispersed phase and is cross-linked by a peroxide; a thermoplastic elastomer composition comprising a continuous phase of a thermoplastic polyolefin resin (A) and a dispersed phase of an epoxy-group-containing ethylene-acrylic ester copolymer rubber component (B) and acrylonitrile butadiene rubber component (C), which is dynamically cross-linked; and a hose having an inner tube, at least one reinforcing layer, and an outer cover, wherein the inner tube and the outer cover contain a thermoplastic elastomer composition comprised of a thermoplastic resin in which is blended an at least partially cross-linked elastomer component, the reinforcing layer is a brass-plated wire, and the reinforcing layer and inner tube and the reinforcing layer and outer cover have between them a maleic-acid-modified polyolefin thermoplastic resin.
Owner:YOKOHAMA RUBBER CO LTD

ZSM-5 mesoporous molecular sieve catalyst for preparing propylene from methanol and preparation thereof

The present invention relates to a ZSM-5 mesoporous molecular sieve catalyst used for manufacturing propylene by methanol and a preparation method thereof, which mainly solves the problems of low propylene selectivity, low propylene / ethylene mass ratio as well as poor thermal stability of molecular sieve and poor water thermal stability in the prior art. The present invention adopts the technical proposal of adopting ZSM-5 mesoporous molecular sieve raw powder with a silicon-aluminum mol ratio SiO2Al2O3 of 20 to 1000 and a weight percentage of 20 to 100 percent as well as at least one caking agent selected from SiO2, clay and Al2O3 to extrude, tablet or spray into shape; then treating for 1 to 8 hours by 0.1 to 3 mol / l of at least one ammonium liquor from ammonium nitrate, ammonium chloride or ammonium sulphate or 0.1 to 8.5 mol / l of at least one acid liquor from muriatic acid, nitric acid, vitriol or acetic acid under a temperature of 20 to 90 DEG C; then using steam to treat for 2 to 15 hours under the temperature condition of 400 to 700 DEG C; using a liquor of 0.1 to 3mol / l selected from at least one of oxalic acid, citric acid or maleic acid under a temperature condition of 20 to 90 DEG C to dip for 2 to 5 hours to obtain the modified molecular sieve catalyst, thus better solving the problems. The present invention can be used in the industrial production of propylene by being converted from methanol.
Owner:CHINA PETROLEUM & CHEM CORP +1

Catalyst for preparing 1,4-butanediol or tetrahydrofuran from selective hydrogenation of dimethyl maleate and preparation method thereof

The invention belongs to the field of chemical technology, and in particular relates to a catalyst for preparing 1, 4-butanediol or tetrahydrofuran by selective hydrogenation of dimethyl maleate and a preparation method thereof. The catalyst consists of Cu, Zn, Al, M and O, and the mol content of each metal element is as follows: 30 to 60 percent of Cu, 10 to 50 percent of Zn, 5 to 20 percent of Al and 0 to 10 percent of M, wherein M is any one of Mn, Mg and Cr. The preparation method for the catalyst comprises precipitation, ageing, washing, drying and baking of a catalyst precursor, and reduction activation before use. The catalyst is applied to the hydrogenation reaction of the dimethyl maleate, and the yield of the 1, 4-butanediol at a reaction temperature of 180 DEG C is 73.6 percent; and the yield of the tetrahydrofuran is 96 percent at a reaction temperature of 220 DEG C. Product composition of the catalyst can be well adjusted by changing the reaction condition to adapt to different market demands, and the catalyst has extremely high industrial application value.
Owner:FUDAN UNIV +1

Hose comprising modified nylon 6,12 material

A copolymer of nylon 6 (caprolactam mer units) and nylon 12 (dodecanolactam mer units) and / or nylon 11 (undecanolactam mer units), which has been modified to provide improved physical properties, such as flex modulus, elastic modulus, and yield strength, serves as a layer of a hose suited to use in airbrake applications. The modified copolymer is resistant to degradation by zinc chloride and moisture and thus may be used as a peripheral layer of the hose in place of a conventional protective layer comprising a pure polyamide, such as nylon 11 or 12. Alternatively, the modified copolymer may be used as a tie layer for rendering a peripheral layer comprising nylon 12 or 11 compatible with a layer of nylon 6, allowing the less expensive nylon 6 material to comprise the bulk of the hose thickness. The layer includes a compatibilizer, such as a maleic anhydride grafted polyethylene, and may also include plasticizers and impact modifiers.
Owner:EATON CORP
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