168 results about "Polyoxidonium" patented technology

Biocompatible macromer compositions are provided including an isocyanate-functional polyalkylene oxide combined with at least one multi-functional isocyanate as a first component, and a multi-amino functional compound possessing multiple primary amines as a second component. The isocyanate-functional polyalkylene oxide has pendant polyalkylene oxide groups. The resulting biocompatible macromer composition can be employed as an adhesive or sealant for medical / surgical uses.

The present invention relates to a process for preparing alkoxysilane-functional prepolymers by reacting A) 1.0 equivalent of a polyol component have a number average molecular weight of 3000 g / mol to 20,000 g / mol and containing one or more polyQxyalkylene polyols or polyoxyalkylene polyol prepolymers with B) 1.05 to 1.50 equivalent of an isocyanate-and alkoxysilane-functional compound of formula I)wherein X, Y, and Z independently of one another are linear or branched C1-C8 alkyl or C1-C8 alkoxy radicals, wherein at least one of the radicals is a C1-C8 alkoxy group and R is an organic radical having a functionality of at least two, and subsequently further reacting the remaining free NCO groups by allophanatization or by reaction with C) an isocyanate-reactive component. The present invention also relates to the alkoxysilane-functional prepolymers obtained by the process of the invention.

The invention discloses a spraying elastomer raw material composition. The composition comprises an A component raw material and a B component raw material, wherein the A component raw material comprises one or more of polyester polyol having a number-average molecular weight of 400-3000, polyether polyol having a number-average molecular weight of 400-3000, vegetable oil polyol having a number-average molecular weight of 400-2000, amino-terminated polyether having a number-average molecular weight of 200-4000 and polyisocyanate; and the B component raw material comprises polyoxypropylene diamine having a number-average molecular weight of 200-4000, polyoxypropylene triamine having a number-average molecular weight of 400-5000, active aromatic diamine and aromatic diamine. The invention also discloses a prepolymer of a spraying elastomer, a raw material composition and a preparation method of the prepolymer as well as a bathroom product. The spraying elastomer disclosed by the invention is good in various comprehensive properties; and after pressed, the product can memory the original shape, thereby improving the whole comfortable sensation and broadening the use range of the spraying elastomer.

A purification method in which, from a specific polyoxyalkylene derivative having a molecular weight of 8,800 to 100,000, an impurity differing in the number of hydroxyl groups is separated, the method including steps (A), (B), (C), and (D). Step (A): a step in which an aprotic organic solvent is used in an amount at least 5 times by weight the amount of the polyoxyalkylene derivative to dissolve the polyoxyalkylene derivative therein and give a solution; step (B): a step in which an adsorbent comprising an oxide containing at least one of aluminum and silicon is added to the solution in an amount 0.5 to 5 times by weight the amount of the polyoxyalkylene derivative to thereby yield a slurry; step (C): a step in which the slurry is stirred at 25° C. or higher; step (D): a step in which the polyoxyalkylene derivative is recovered from the slurry.

An alkaline detergent for an automatic analyzer is disclosed, which is consisted of an alkaline solution containing polyoxyalkylene alkylether as a nonionic surfactant, and a cloud point-adjusting organic solvent.

The present invention provides a solid soap composition comprising: a soap component (a); polyoxyalkylene-modified polysiloxane (b) that is expressed by formula (1) below, (where, R1 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, m represents an integer of 1 to 60, n represents an integer of 1 to 60, a represents an integer of 1 to 10, b represents an integer of 1 to 30, and c represents an integer of 0 to 30); and tetrakis (2-hydroxyalkyl) ethylene diamine (c) that is expressed by formula (2) below, (where, R2 to R5 are the same or different and each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), as essential components. According to the present invention, it is possible to provide a cleaning agent capable of performing makeup removal and ordinary facial cleaning at the same time in single facial cleaning, that has sufficient foaming property, that provides a clean feel after cleaning, and that can sufficiently remove not only cosmetic foundations but also acid pigments.

Coated barrier fabrics are prepared with a two part, cold cure polyoxysiloxane composition and a unique two pass, two cure rate, coating process. Preferably, the coated fabrics have overlayed a second uncoated fabric on the inner surface of the coated substrate. This preferred process realizes a reusable medical barrier fabric with exceptional durability even after undergoing many laundering / autoclaving / drying cycles.

The invention discloses a slimming warm-up oil, which is prepared by mixing 10-20 parts of lecithin,10-20 parts of polyoxyethylene, 10-20 parts of octadecyl hydroxyl betaine, 0.8-1 part of low molecular weight polyacrylamide, 10-15 parts of glycerol, 0.5-1.5 parts of tallow alkyl propanolamine and 30-40 parts of cation water. The slimming warm-up oil provided by the invention can be applied to the body before exercise, and has warm-up effect as well as slimming effect.

An object of this invention is to provide a cleaner composition that has a desirable cleaning property and is easily separable from pre-rinsing water even when cleaning an object produced by using a lead-free soldering flux; and a lead-free soldering flux removal system using a pre-rinsing method that can reduce the amount of waste fluid.The invention uses a cleaner composition for lead-free soldering flux, comprising (A) specific glycol ethers; (B) a specific polyoxyalkylene amine; and (C) a chelating agent that is at least one member selected from the group consisting of (c1) aliphatic hydroxycarboxylic acid chelating agents and (c2) (poly)phosphoric acid chelating agents.

The invention relates to the field of biomedical engineering, and discloses a dressing for promoting wound healing and a preparation method of the dressing. The method includes the following steps: (1) purifying alpha2 macroglobulin; (2) dissolving GHK-Cu, copper sulfate, leupeptin, carboxymethyl chitosan and polyethylene oxide in water, performing uniform stirring, and adding the alpha2 macroglobulin solution to obtain a spinning solution; and (3) performing electrospinning by using the spinning solution to obtain the dressing for promoting wound healing. The dressing for promoting wound healing prepared by the method is a medical material that can induce wound healing for a long time, can accelerate wound healing, and is very effective in treating wounds and skin injury.

The invention relates to polypropylene oxide structures containing addition compounds and the salts thereof. The invention is characterised in that the addition compounds can be obtained by reacting (a) one or more polyisocyanates comprising at least two isocyanate groups per molecule with: (b1) one or more compounds of formula Y-XH; (b2) optionally one or more compounds of formula G-(XH)n; (c1) one or more compounds of general formula Z-Q; and (c2) optionally one or more compounds of general formula M-Q. In addition the invention relates to the production of the addition compounds and the use thereof as dispersants, humectants and dispersion stabilisers, as well as to solids that are coated with the addition compounds.

A composition has a water dispersible esterified trimer acid (ETA) and a block co-polymer, especially a polyoxyalkylene block copolymer having EO and PO blocks. The composition may also have a polymeric surfactant antifoaming agent and an oil (especially a mineral oil or ester oil).

This invention provides a liquid composition that removes titanium nitride from a substrate without corroding tungsten or a low-k interlayer dielectric also present on said substrate. Said liquid composition has a pH between 0 and 4, inclusive, and contains the following: at least one oxidizing agent (A) selected from the group consisting of potassium permanganate, ammonium peroxodisulfate, potassium peroxodisulfate, and sodium peroxodisulfate; a fluorine compound (B); and a tungsten-corrosion preventer (C). The tungsten-corrosion preventer (C) either contains at least two different compounds selected from a group of compounds (C1) consisting of alkylamines, salts thereof, fluoroalkylamines, salts thereof, and the like or contains at least one compound selected from said group of compounds (C1) and at least one compound selected from a group of compounds (C2) consisting of polyoxyalkylene alkylamines, polyoxyalkylene fluoroalkylamines, and the like. The mass concentration of potassium permanganate in the abovementioned oxidizing agent (A) is between 0.001% and 0.1%, inclusive, and the mass concentration of the abovementioned fluorine compound (B) is between 0.01% and 1%, inclusive.

The invention discloses a polyvinyl alcohol / polyoxyethylene synergistic enhanced chitin material and a production method and a purpose thereof. The method comprises the following steps: adding chitin in a solution containing NaOH and urea, adding polyoxyethylene and polyvinyl alcohol, dissolving the raw materials through a refrigeration-unfreezing process to obtain a chitin solution; centrifuging the solution and defoaming the solution, casting the chitin solution and gelating the chitin solution to form a membrane, using a dilute acid solution to immerse the material for several minutes, using water for flushing to remove the residual sodium hydroxide and urea in the membrane to obtain a chitin moisture membrane; and pressurizing the chitin moisture membrane and heating the material to obtain the enhanced dried chitin membrane. In the invention, an application of PEO and PVA is capable of increasing the mechanical properties (comprising tensile strength and bending strength) of the chitin material, and effectively improves the brittleness of the material.

The invention discloses a preparation method of a silk fibroin tissue engineering scaffold based on a near-field electrospinning technology. The preparation method comprises the steps that a regenerated silk fibroin aqueous solution is mixed with a polyoxyethylene aqueous solution, the ratio of the mixed materials is adjusted, the viscosity characteristic of the whole mixture is changed, and a silk fibroin / PEO solution system which can be used for near-field electrospinning is prepared; then the near-field electrospinning printing technology is adopted, printing is carried out according to a scaffold model of a cross-shaped net structure circulating in a periodic cycle, and finally, the preparation of the silk fibroin tissue engineering scaffold is realized through a post-treatment processsuch as chemical modifier soaking. The preparation method is simple, the production efficiency is high, the inherent characteristics of the raw materials are not affected, the porosity of the prepared tissue engineering scaffold is high and adjustable, the pore size is proper, the mechanical property is good, and the specific surface area is large; and the biocompatibility and the biological activity of the scaffold material are good, the extracellular matrix can be simulated well, and the scaffold material is suitable for cell adhesion, proliferation and differentiation.

A method for treatment of esophagitis is disclosed in which a therapeutic composition is introduced into the esophagus to contact a mucosal surface within the esophagus. The pharmaceutical composition comprises a reverse-thermal gelation polyoxyalkylene block copolymer, a pharmaceutical substance and a pharmaceutical substance selected from the group consisting of glutathione and a precursor for glutathione biosynthesis.

The invention discloses a polyethylene oxide and application of a suppository matrix of which the molecular structure contains polyoxyethylene groups and C8-C24 alkyl in improving the stability of a suppository composition containing a fatty glyceride matrix. The invention also discloses a suppository composition of which the stability and the intracavity administration reservation functions are improved. The suppository composition comprises a fatty glyceride matrix, polyethylene oxide, a suppository matrix of which the molecular structure contains polyoxyethylene groups and C8-C24 alkyl anda suppository medicine, wherein the polyethylene oxide content is not lower than 1%, and the suppository matrix content is not lower than 10%.

A cationic electrodeposition coating composition having superior defoaming property and being capable of effectively preventing the generation of unevennes of drying is provided. A cationic electrodeposition coating composition comprising a binder resin containing a cationic epoxy resin and a block isocyanate curing agent and a defoaming agent, wherein the defoaming agent contains at least one of polyoxyalkylene compounds (A) represented by any one of the following formulae (1) to (3): ]R—(OA)n1]t-mQ[—(OA)n2-L]m   (1) [R—(OA)n1]t-mQ[—(OA)n2-L-(OA)n3-Q[—(OA)n4-R]t-1]m   (2) [R—(OA)n1]t-1Q-L-Q [—(OA)n2-L]t-1   (3) wherein Q is a reaction residual group formed by removing a hydrogen atom(s) from a number t of primary hydroxyl groups of nonreducing disaccharide or trisaccharide, L is the reaction residual group of isocyanate or the reaction residual group of dihalogenated alkyl, OA is an oxyalkylene group having a carbon number of 2 to 4, each of n1 to n4 is independently an integer of 2 to 40, t is an integer of 2 to 4 and m is an integer of 1 to 3 and smaller than t, but provided that the total number of OA's in a molecule is 10 to 80 per one of Q.

The invention provides air clay and a preparation method thereof. The air clay is prepared from quartz micro-powder, pharmaceutical grade shell powder, polyoxyethylene, alpha olefin sodium sulfonate, glycerol and sorbitol. The preparation method comprises the following steps of: (1) adding the quartz micro-powder which is used as a main body, the pharmaceutical grade shell powder which is used as a molecular structure connecting carrier, and the alpha olefin sulfonate which is used as a reaction element into a reaction kettle; (2) raising the temperature to ensure that the quartz micro-powder fully react with the shell powder to achieve a fermentation effect; (3) when the temperature is up to 85 DEG C, stopping heating, adding the polyoxyethylene and continuously mixing; (4) pouring a product out of the reaction kettle, moving the product to a U-shaped mixer, adding a 70-percent of the sorbitol solution, stirring and mixing, wherein the rotating speed of the mixer is 15rpm; (5) lowering the temperature to be 60 DEG C, adding the glycerol, and adjusting the rotating speed of the mixer to be 10rpm; (6) observing a flocculent drawing state of the product and pouring the product out after the product is agglomerated. The usability of the air clay is the same as that of plasticine, the shaping function of the air clay is superior to that of the plasticine, the fermenting and drawing functions are provided, and the air clay can be modeled and played repeatedly and randomly.

The invention discloses a viscosity reducer used in a heavy oil recovery process, and particularly relates to a low-power depolymerization emulsification viscosity reducer for heavy oil cold production and a preparation method thereof. The viscosity reducer is prepared by compounding 0.1-10wt% of polyoxyethylene grafted polyacrylamide, 40-60wt% of a crown ether surfactant and the balance water. The viscosity reducer has strong capability of heavy oil depolymerization emulsification under a low-power condition, and under the conditions of a rotation speed of 50rpm or below, a use concentrationof 0.1wt% or below, a temperature of 50DEG C and a stirring time of 1min or below, the viscosity of the heavy oil with a viscosity exceeding 10000mPa.S can be reduced by 99.0% or more, the viscosity of the heavy oil with a viscosity of 5000-10000mPa.S can be reduced by 98.0% or more, and the viscosity of the heavy oil with a viscosity of 1000-5000mPa.S can be reduced by 95% or above, and the problem that the seepage power of conventional emulsifiers can hardly emulsify heavy oil under an oil reservoir condition is effectively solved.

The present invention relates to a lubricating composition containing (a) an ester-containing viscosity index improver; and (b) a polyoxyalkylene polyol. The invention further provides a method for lubricating a mechanical device with the lubricating composition.

Provided is a low-foaming silicone composition, including: (A) from 51 to 99.9 parts by mass of a polyoxyalkylene-modified organopolysiloxane having a specific structure, (B) from 0.1 to 49 parts by mass of a polyoxyalkylene / perfluoroalkyl-comodified organopolysiloxane having a specific structure, and (C) from 0 to 48.9 parts by mass of a glycerol-modified organopolysiloxane having a specific structure (provided that the combined quantity of the component (A), the component (B) and the component (C) is 100 parts by mass). The silicone composition exhibits a powerful surfactant action and low foaming properties, and is useful as a spreading agent and a cleaning agent.