823 results about "Polyhydroxy compound" patented technology

A composition is provided which is useful for self-tanning skin coloring and is characterized by improved stability, which comprises from about 0.5% to about 20.0% by weight, based on total weight of said composition, of a self-tanning skin coloring agent subject to chemical instability, which is preferably dihydroxyacetone; from about 2.0% to about 40.0% by weight of a polyethoxyglycol, which is preferably ethoxydiglycol; and from about 0.1% to about 15.0% by weight of a polyol comprising a polyhydric compound having at least three hydroxyl groups and at least three carbon atoms, which is preferably D-sorbitol. The self-tanning composition may further optionally contain from about 0.1% to about 8.0% by weight of a water soluble dihydroxyl compound having at least two, and up to eight carbon atoms, which is preferably ethylene glycol; and the self-tanning composition may still further optionally contain an acidifying agent in amount sufficient to maintain the pH of said total composition at from about 3.5 to about 4.5, which is preferably sorbic acid. Cosmetologic products and methods of tanning are also provided.

Fluorescent biosensor molecules, fluorescent biosensors and systems, as well as methods of making and using these biosensor molecules and systems are described. These biosensor molecules address the problem of obtaining fluorescence emission at wavelengths greater than about 500 nm. Biosensor molecules generally include an (1) an acridine-based fluorophore, (2) a linker moiety and (3) a boronate substrate recognition / binding moiety, which binds polyhydroxylate analytes, such as glucose. These biosensor molecules further include a “switch” element that is drawn from the electronic interactions among these submolecular components. This fluorescent switch is generally “off” in the absence of bound polyhydroxylate analyte and is generally “on” in the presence of bound polyhydroxylate analyte. Thus, the reversible binding of a polyhydroxylate analyte essentially turns the fluorescent switch “on” and “off”. This property of the biosensor molecules, as well as their ability to emit fluorescent light at greater than about 500 nm, renders these biosensor molecules particularly well-suited for detecting and measuring in-vivo glucose concentrations.

Two (or more), -component, body-implantable, absorbable, biocompatible, putty, and non-putty hemostatic tamponades for use in surgery. Component 1 is a finely powdered bulking material, preferably less than 50 microns, e.g. the calcium, magnesium, aluminum, or barium salts of saturated or unsaturated carboxylic acids containing about 6 to 22 carbon atoms, hydroxyapatite, DBM, polyglycolide, polylactide, poldioxinones, polycaprolactones, absorbable glasses, gelatin, collagens, mono, and polysaccharides starches. Component 2, a dispersing vehicle, may be esters of C8-C18 monohydric alcohols with C2-C6 aliphatic monocarboxylic acids; C2-C18 monohydric alcohols with polycarboxylic acids; C8-C30 monohydric alcohols; tocopherol and esters thereof with C2-C10 aliphatic monocarboxylic acids or polycarboxylic acids; absorbable 10-14C hydrocarbons; free carboxylic acids such as oleic, capric, and lauric; dialkyl ethers and ketones; alkyl aryl ethers and ketones, polyhydroxy compounds and esters and ethers thereof; (ethylene oxide / propylene oxide copolymers), oils e.g. olive oil, castor oil and triglycerides.

A protectant mixture for use in preserving biological materials comprising (1) at least one polyhydroxy compound, where the total amount of polyhydroxy compound in the mixture is from about 5% to about 60% by weight of the mixture where the mixture is an aqueous solution and is from about 10% to about 95% where the mixture is in solid form, and (2) phosphate ions, where the total amount of phosphate ions in the mixture is such that the molar ratio of phosphate ions to hydroxy groups in the polyhydroxy compound is from about 0.025 to about 0.625; a preservation medium comprising (1) a biological material, (2) at least one polyhydroxy compound, where the total amount of polyhydroxy compound in the medium is from about 5% to about 60% by weight of the medium, and (3) phosphate ions, where the total amount of phosphate ions in the mixture is such that the molar ratio of phosphate ions to hydroxy groups in the polyhydroxy compound is from about 0.025 to about 0.625; methods of preserving the preservation medium; and the resulting preserved biological material composition.

Two (or more), -component, body-implantable, absorbable, biocompatible, putty, and non-putty hemostatic tamponades for use in surgery. Component 1 is a finely powdered bulking material, preferably less than 50 microns, e.g. the calcium, magnesium, aluminum, or barium salts of saturated or unsaturated carboxylic acids containing about 6 to 22 carbon atoms, hydroxyapatite, DBM, polyglycolide, polylactide, poldioxinones, polycaprolactones, absorbable glasses, gelatin, collagens, mono, and polysaccharides starches. Component 2, a dispersing vehicle, may be esters unsubstituted and N-substituted pyrrolidones of C8-C18 monohydric alcohols with C2-C6 aliphatic monocarboxylic acids; C2-C18 monohydric alcohols with polycarboxylic acids; C8-C30 monohydric alcohols; tocopherol and esters thereof with C2-C10 aliphatic monocarboxylic acids or polycarboxylic acids; absorbable 10-14C hydrocarbons; free carboxylic acids such as oleic, capric, and lauric; dialkyl ethers and ketones; alkyl aryl ethers and ketones, polyhydroxy compounds and esters and ethers thereof; (ethylene oxide / propylene oxide copolymers), oils e.g. olive oil, castor oil and triglycerides.

The invention discloses a high-flexibility melamino-formaldehyde foam material and a preparation method thereof. The preparation method comprises: firstly, preparing melamino-formaldehyde prepolymer modified by polyol into aqueous solution with definite weight concentration; weighting 100 parts by weight of prepolymer aqueous solution; adding 0-15 parts by weight of surfactant, 1-20 parts by weight of foaming agent, 0-10 parts by weight of accelerator and 0-10 parts by weight of curing agent to be fully stirred and mixed to prepare foaming liquid; filling foaming liquid into a microwave chemical reactor or a high-temperature oven; and foaming for 30s-15min at the temperature of 100-300 DEG C to prepare the foam material. The melamino-formaldehyde foam material disclosed by the invention solves the problems of big brittleness, poor flexibility, easy duslting of foam, complex preparation technology, high production cost and the like of the existing melamino-formaldehyde foam material and has wide application prospect.

The invention provides a process for the preparation of essential oil microcapsules comprising dissolving a di- or polyisocyanate into an essential oil, emulsifying the resulting mixture in an aqueous solution containing a di- or polyamine, and / or a di or polyhydroxy compound to effect encapsulation of said essential oil through interfacial polymerization, whereby there is formed a polyurea and / or polyurethane film around the essential oil droplets which film enhances the stability of said essential oil, reduces its evaporation rate and controls its release rate when applied to a substrate.

The invention discloses solvent free bi-component polyurethane adhesive and a preparation method thereof, wherein the solvent free bi-component polyurethane adhesive relates to a compound soft package adhesive in the fields of food, medicine, and the like. The adhesive comprises a component A and a component B, wherein the component A is an isocyanate compound, the component B is polyol, and the adhesive is obtained in such a way that the component A and the component B are mixed according to the weight percent of 2:1. The adhesive solves the problem that the use effect is influenced and the use range is limited because of poor properties of transparency, viscosity, low-temperature coating and stripping strength, and boiling resistance existing in the prior solvent free adhesive. The adhesive is environmental-friendly without solvent because the component A and the component B of the adhesive both are transparent liquid, has low viscosity as well as better low-temperature coating and stripping strength, and keeps better stripping strength after being boiled, thereby being environmental-friendly adhesive, wherein the viscosity of the component A is 2000-5000MPa.s and the viscosity of the component b is 400-2000MPa.s below 25 DEG C.

The invention relates to a preparation method of a polyurethane prepolymer, which comprises: mixing polyisocyanate and an organic polyol compound for reaction, wherein the molar ratio of the -NCO in the polyisocyanate and the -OH in the organic polyol compound is (4-15):1; the polyisocyanate is two or more of polymethylene polyphenyl isocyanate (PAPI), methylene diphenyl diisocyanate (MDI) and carbodiimide modified MDI 5412; and the organic polyol compound comprises one or more of polyether glycol with functionality of 2 to 4 and number-average molecular weight of 300 to 5,000, polyester polyol and polyether-polyester polyol. The invention also relates to the polyurethane prepolymer and a polyurethane grouting material. The polyurethane grouting material is a single-component grouting material, has little toxicity to the environment and construction personnel and can well improve foaming rate and anti-contraction performance; during packaging, the need of independent packaging of a catalyst is obviated, so the packaging cost is lowered; and the material is more convenient to use and transport and has a more wide application range and a bright prospect.

The present invention provides a formulation for a reactive dye layer for a limited-play optical storage medium, the reactive formulation including at least one carrier material or curable acrylate monomer, at least one reactive material disposed within the carrier material or acrylate monomer, and at least one photo-bleaching retarder material disposed within the at least one adhesive material. The at least one photo-bleaching retarder material includes at least one polymeric polyhydroxy compound selected from the group consisting of polyhydroxystyrenes, cellulose, and functionalized cellulose derivatives.

A method for producing ethylene glycol, including (a) adding a polyhydroxy compound and water to a sealed high-pressure reactor, (b) removing air and introducing hydrogen, and (c) allowing the polyhydroxy compound to react in the presence of a catalyst while stiffing. The catalyst includes a first active ingredient and a second active ingredient. The first active ingredient includes a transition metal of Group 8, 9, or 10 selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and / or a mixture thereof. The second active ingredient includes a metallic state of molybdenum and / or tungsten, or a carbide, nitride, or phosphide thereof. The method is carried out at a hydrogen pressure of 1-12 MPa, at a temperature of 120-300° C. for not less than 5 min in a one-step catalytic reaction. The efficiency, selectivity, and the yield of ethylene glycol are high. The preparation process is simple and the materials used are renewable.

In a first aspect, organic coating compositions are provided, particularly spin-on antireflective coating compositions, that contain a polyester resin component. In a further aspect, coating compositions are provided that contain a resin component obtained by polymerization of a multi-hydroxy compound. Coating compositions of the invention are particularly useful employed in combination with an overcoated photoresist layer to manufacture integrated circuits.

This invention provides methods for producing ethylene glycol from polyhydroxy compounds such as cellulose, starch, hemicellulose, glucose, sucrose, fructose, fructan, xylose and soluble xylooligosaccharides. The methods uses polyhydroxy compounds as the reactant, a composite catalyst having active components comprising one or more transition metals of Groups 8, 9, or 10, including iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, as well as tungsten oxide, tungsten sulfide, tungsten hydroxide, tungsten chloride, tungsten bronze oxide, tungsten acid, tungstate, metatungstate acid, metatungstate, paratungstate acid, paratungstate, peroxotungstic acid, pertungstate, heteropoly acid containing tungsten. Reacting at a temperature of 120-300° C. and a hydrogen pressure of 1-13 MPa under hydrothermal conditions to accomplish one-step catalytic conversion. It realizes efficient, highly selective, high yield preparation of ethylene glycol and propylene glycol from polyhydroxy compounds. The advantage of processes disclosed in this invention include renewable raw material and high atom economy. At the same time, compared with other technologies that converts biomass raw materials into polyols, methods disclosed herein enjoy advantages including simple reaction process, high yield of targeted products, as well as easy preparation and low cost for the catalysts.

A liquid radiation-curable composition that comprises(A) at least one polymerizing organic substance comprising a mixture of(1) at least one alicyclic epoxide having at least two epoxy groups; and(2) at least one difunctional or higher functional glycidylether of a polyhydric compound;(B) at least one free-radical polymerizing organic substance comprising a mixture of(1) optionally, at least one trifunctional or higher functional (meth)acrylate compound; and(2) at least one aromatic di(meth)acrylate compound;(C) at least one cationic polymerization initiator;(D) at least one free-radical polymerization initiator;(E) optionally, at least one hydroxyl-functional aliphatic compound; and(F) at least one hydroxyl-functional aromatic compound;wherein the concentration of hydroxyl groups in the radiation-curable composition is at least about 1.1 equivalent OH groups per kilogram;wherein the concentration of epoxy groups in the radiation-curable composition is at least about 5.5 equivalent epoxy groups per kilogram; andwherein the amount of trifunctional or higher functional (meth)acrylate compound (B)(1) is from 0% to about 3% of the composition and the amount of aromatic di(meth)acrylate compound (B)(2) is at least 10% of the composition.

The invention relates to a pigment dispersant of a polyester type branched polymer and a preparation method thereof. In the pigment dispersant, a polyhydroxy compound of By is used as a nuclear molecule, wherein, B represents hydroxy and the functionality y thereof is more than or equal to 2; a polyhydroxy acid of ABx is adopted as a dispersing molecule, wherein, A represents carboxyl, B represents hydroxy and x represents the functionality of the hydroxy which is more than or equal to 2; a vacuum melt polycondensation method is adopted to obtain a melicera polyester type branched polymer and the tail end of which is provided with the hydroxy; then the obtained polyester type branched polymer is utilized to carry out melt polycondensation with a fatty acid under a vacuum condition and finally to carry out esterification with estolide under a normal pressure. As an oleophylic aliphatic carbon chain and a polar group which has a strong absorption effect on the surface of the dye particles exist in the molecule of an output, the output relates to a double-parent functional macromolecule, in particular to a pigment dispersant with excellent performance in a paint and printing ink system and has excellent application prospects in the paint and printing ink industry.

The invention provides compositions to remove mercury and other pollutants from a fluid stream, particularly flue gases containing them. The compositions are mixtures of compounds selected from two or more different groups of compounds. One of the compositions can simultaneously remove mercury and condition the dust for better removal of the dust by an ESP if an ESP is the device of choice for dust control. This composition is a mixture selected from the group of halides other than fluoride and chloride, and mixture thereof, and that selected from a group of nitrates. In the other invention, the composition consists of a mixture of selected polyhydroxy compound or compounds, ammonium sulfate, halides other than fluoride and chloride, and mixture thereof. The composition can be liquid or dry powder and can be injected ahead of the particulate control device as a mist when the formulation is a liquid or as a powder when dry. Methods are provided for applying the formulations.

The invention provides a composite modification method for a phenolic resin adhesive. A mixture of organic silicon and (or) a polyhydric compound serves as a modifier in a synthetic process of phenolic resin. The composite modification method is technically characterized in that: the modifier is added in a prepolymerization reaction process or after the prepolymerization reaction; formaldehyde is added at one time under an alkaline condition; dehydration is not performed in the later period of the reaction; the whole process flow is simple and is easy to operate; the product has stable performance and does not pollute environment; and the content of free formaldehyde is low.

Two (or more), component, body-implantable, absorbable, biocompatible, putty-like surgical mechanical hemostatic tamponades for use in surgery. Component 1, a carboxylic acid salt bulking material preferably less than 50 micron, preferably the calcium, magnesium, zinc, aluminum, lithium or barium salts of saturated or unsaturated carboxylic acids containing about 6 to 22 carbon atoms. Component 2, a dispersing vehicle, may be esters of C8-C18 monohydric alcohols with C2-C6 aliphatic monocarboxylic acids; C2-C18 monohydric alcohols with polycarboxylic acids; C8-C30 monohydric alcohols; tocopherol and esters thereof with C2-C10 aliphatic monocarboxylic acids or polycarboxylic acids; absorbable 10-14C hydrocarbons; free carboxylic acids such as oleic, linoleic, caprylic, capric, and lauric; dialkyl ethers; alkyl aryl ethers; dialkyl ketones and alkyl aryl ketones; polyhydroxy compounds and esters and ethers thereof; oils such as olive oil and castor oil and triglycerides.

Isocyanate-functional polyurethane prepolymers and aqueous dispersions therefrom which are useful for the production of flat materials having excellent resistance to alcoholic solvents are described. The prepolymers are prepared by reacting:A) an isocyanate selected from the group consisting ofi) an aliphatic and / or a cycloaliphatic isocyanate,ii) a mixture of an aromatic isocyanate and an aliphatic and / or a cycloaliphatic isocyanate,B) a di- or polyhydroxy compound having a number average molecular weight of from 700 to about 16,000, andC) optionally, a dihydroxy and / or polyhydroxyl compound having a number average molecular weight of less than 700, with the provisos thata) at least one of components A), B or C) has a functionality of more than 2 andb) if both component A) and component B) are difunctional, component C) cannot be a trihydroxy component of the formula:R—(OH)3 where R is a saturated straight chain or branched chain aliphatic group of from 2 to 8 carbon atoms.

The invention discloses a method for preparing polyurethane elastomer modified by a carbon nano-tube. After acidification and acylchlorination at the surface, the carbon nano-tube reacts with polyhydroxy compound or oligomer to produce a carbon nano-tube with functionalized hydroxyls; one or more hydroxyls are connected to the surface of the functionalized carbon nano-tube through covalent bonds and have certain crosslinking and chain extension functions if being applied in the synthesis of polyurethane, thus greatly increasing the bonding force between the interfaces of the carbon nano-tube and the polyurethane base body, and meanwhile, the existence of hydroxyls improves the dispersibility of the carbon nano-tube in the polyurethane base body, which greatly improves the mechanical properties in all aspects of the functionalized carbon nano-tube / polyurethane composite material as compared the original carbon nano-tube / polyurethane composite material. Furthermore, the carbon nano-tube is capable of changing the dielectric property of the polyurethane composite material or even producing conductive polyurethane, thus enlarging the application range and field of polyurethane.

The invention provides a halogen free expansion flame retardant used for the flame retardation of photo-cured epoxide resin. The flame retardant consists of one or more of phosphorous compound which can generate phosphoric acid when being heated, polyol, nitrous compound and other auxiliaries; according to the 100 parts by weight of halogen free expansion flame retardant, the phosphorous compound which can generate phosphoric acid when being heated is 30 to 85 parts by weight, the polyol is 10 to 50 parts by weight, the nitrous compound is 5 to 35 parts by weight and other auxiliaries is 0 to 10 parts by weight. The invention provides a halogen free flame retardant photo-cured epoxide resin composition which has wide application range and low cost, achieves high-flame retardant effect and does not adopt an organophosphorous flame retardant.

The invention relates to hyperbranched polyester modified acrylic resin and a preparation method thereof. Firstly, a By-type polyhydroxylated compound is taken as nuclear molecules (wherein B represents hydroxyl, and the degree of functionality y of B is larger than of equal to 2), ABx-type polyhydroxy acid is taken as divergence molecules (wherein A represents carboxyl, B represents hydroxyl and x represents the degree of functionality of hydroxyl and is larger than or equal to 2), a polyester-type hyperbranched polymer with hydroxyl at the terminal is obtained through a vacuum fusion polycondensation method, and esterification reaction is performed on prepared hyperbranched polyester and acrylic resin with carboxyl in the presence of a water-carrying agent to obtain hyperbranched polyester modified acrylic resin. Acrylate with hyperbranched polyester introduced enriches a great amount of hydroxyl, and is taken as a cross-linking group to greatly reduce the curing time of a coating film; and at the same time, hyperbranched polyester has excellent performance of dendritic polymer, molecular chains are not easily twisted, and hyperbranched polyester modified acrylic resin with high solidity and low viscosity can be obtained. According to the invention, the source of raw materials is wide, the price of the raw materials is low, the synthetic method is simple, the controllability is good, and the production cost is low.

The invention belongs to the macromolecule material technology field, which relates to a preparation method of biodegradable and bio-absorbable macromolecule nanometer fiber non-woven fabric material, in particular to the preparation method of natural high polymer biological material, namely, sodium alginate electrostatic spinning solution, and the preparation method of pure sodium alginate nanometer fiber membrane material. The preparation method and the technical principle of the invention comprise the following steps: aiming at the characteristics of rigidity and stretching ability of the sodium alginate molecular chain in the aqueous solution, a solvent type strong polar modifying agent, namely, polyhydroxylated compound is induced in the aqueous solution of the sodium alginate, and through the strong polarity and the low surface tensile force, etc. of the compound, the physical property of the aqueous solution of the sodium alginate is effectively adjusted, thereby realizing that the transforming from the non-spinning of the aqueous solution of the sodium alginate to the spinning of the aqueous solution of the sodium alginate, and obtaining the even and smooth pure sodium alginate nanometer fiber membrane material.

The invention provides steam-resistant solvent-free laminating adhesive applicable to compound soft package, which comprises a component A and a component B. The component A is isocyanate terminated polyurethane polymer formed by reacting polyhydroxy compound and polyisocyanate terminated compound. The component B is formed by mixing more than one type of plant oil polyalcohol, curing accelerator and synthetic modifier. The polyhydroxy compound in component A is formed of polyester polyol and / or polyether polyol with more than two degrees of functionality and a molecular weight range of from 600-2000, and more than one type of plant oil polyalcohol. The curing accelerator in the component B is formed of small molecular polyalcohol with more than two degrees of functionality. The synthetic modifier is formed by reacting more than one type of silane coupling agent and polyalcohol. The steam-resistant solvent-free laminating adhesive is low in viscosity and fast in curing speed, has high peel strength after boiled in water at 100 DEG C, and is especially suitable for soft packages requiring long-term high temperature sterilization (such as soft packages for foods, drugs and baby products). The invention further provides a preparation method of the steam-resistant solvent-free laminating adhesive.

The invention relates to an electrolyte for depositing tin-rich tin-silver alloys upon a substrate. This electrolyte includes a basis solution containing a solution soluble tin and silver compounds; a tin chelating agent of a polyhydroxy compound in an amount sufficient to complex tin ions provided by the tin compound; and a silver chelating agent of a heterocyclic compound in an amount sufficient to complex silver ions provided by the silver compound. Preferably, the tin and silver compounds are present in relative amounts to enable deposits containing about 85 to 99% by weight tin and about 0.5 to 15% by weight silver to be obtained.

The invention provides compositions to remove mercury and other pollutants from a fluid stream,, particularly flue gases containing them. The composition is a mixture consisting of (a) polyhydroxy compound selected essentially from the group consisting of mono, di, poly saccharides and mixture thereof; (b) a catalyst selected essentially from the group of ammonium compounds, sulfuric acid, phosphoric acid and salts, zinc chloride, and mixture thereof; and (c) specificity producing compound selected from the group of elemental sulfur, sullides and polysulfides of ammonia and alkalies, compounds and metals of copper, silver, tin, gold, and mixture thereof. The polyhydroxy compound in (a) above, either alone or in conjunction with the third group (c), above is also shown effective to remove mercury and other pollutants from fluid streams. The composition can be liquid or dry powder. Methods are provided for applying the formulation.