17 results about "Polyol formation" patented technology

A two-part urethane adhesive composition includes a main agent containing a filler and a urethane prepolymer having an isocyanate group and formed from a polyisocyanate A and a polyol 1 with two to three hydroxy groups per molecule and a number-average molecular weight of ≥1800. Isocyanate group content in the main agent is ≥5 mass % of a main agent total content. The composition includes a curing agent containing a polyoxyalkylene polyol, a polyol 2, a urethanization reaction catalyst, a filler, and zeolite, the polyoxyalkylene polyol having two to three hydroxy groups per molecule and having a number-average molecular weight of ≥1800, the polyol 2 having two or more hydroxy groups per molecule and having a number-average molecular weight of ≤200. The urethanization reaction catalyst contains an organic tin catalyst, and an amine catalyst represented by Formula (1) or an amine catalyst blocked with an acid.

A method includes forming a composite material, the method comprising reacting: an isocyanate component; an isocyanate-reactive component comprising at least one Lewis acid catalyzed polyether polyol, based on the weight of the isocyanate-reactive component, the weight of the at least one Lewis acid catalyzed polyether polyol being less than the weight of the at least one Lewis acid catalyzed polyether polyol; the polyether polyol having 90 weight percent (wt.%) or more of polypropylene oxide, a primary hydroxyl group concentration of at least 30 wt.%, a functionality of at least 2, an OH number in the range of 100 mg KOH / g to 800 mg KOH / g, an average acetal content of at least 0.05 wt.%, and a water content in the range of 0.1 wt.% to 2 wt.%; and wherein a reinforcing material is present in at least one of the isocyanate component, the isocyanate reactive component, or the third component.

The invention belongs to the technical field of hydrates, and particularly relates to a method for removing crystal water of an inorganic hydrate at low temperature and simultaneously realizing structural transformation to obtain a stable anhydride. The preparation method comprises the following steps: mixing inorganic hydrate and acid liquor to obtain a mixture; the acid liquor comprises inorganic acid and a solvent, the inorganic acid is inorganic oxyacid corresponding to oxyacid radicals of the inorganic hydrate, the solvent is water or an aqueous solution, and the aqueous solution is a solution formed by water and polyol; covering the mixture and standing to obtain a material after standing; and carrying out heat treatment on the material after standing to obtain an intermediate product which comprises a stable anhydrous substance corresponding to the inorganic hydrate and an acid solution after the reaction is finished. According to the method provided by the invention, dehydration and structural transformation of the inorganic hydrate can be realized at a relatively low temperature, so that energy can be remarkably saved, carbon emission can be reduced, conditions in the whole reaction process are milder, the method is easier to implement, equipment investment is reduced, and the method is suitable for industrial application.

A method for preparing a pulp with relatively high brightness and a high-activity lignin is provided, belonging to the field of pulp and papermaking engineering. In the method, a lignin precursor and a polyol are added during the cooking of a raw material to obtain the pulp with relatively high brightness. In the method, the lignin precursor and the polyol form a nucleophilic combination (including active organic small molecules containing short chains and aromatic moieties) during delignification, which undergoes a saturated condensation reaction on a side chain position of the lignin.

The invention relates to a hair treatment agent comprising two layers, which lie one above the other, and a common interface, containing a water phase (I) and an oil phase (II), wherein the oil phase contains, based on the total weight thereof: a) at least 50 wt.% of at least one C9-C12 isoparaffin; b) up to 40 wt.% of at least one monoester and / or diester of linear or branched, saturated or unsaturated C4-C12 carboxylic acids with linear or branched, saturated or unsaturated C4-C24 monools or polyols, with the proviso that the at least one monoester or diester has at least one branch in the alcohol part or in the acid part; c) up to 15 wt.% of at least one vegetable oil; d) optionally: up to 10 wt.% of at least one perfume. The invention relates to the cosmetic use of the hair treatment agent for caring for hair in order to improve the detanglability, combability, smoothness, hair shine, and frizziness of hair.

The present invention discloses a high-toughness conductive polyurethane synthetic leather and a preparation method thereof. The polyurethane synthetic leather comprises, from the outside to the inside, a surface layer, an intermediate layer, an adhesive layer, and a base fabric layer laminated sequentially. The surface layer slurry comprises an aqueous surface layer resin and an aqueous carbon nanotube dispersion, and the intermediate layer slurry comprises an aqueous intermediate layer resin and an aqueous carbon nanotube dispersion. The preparation method of the aqueous carbon nanotube dispersion comprises the following steps: S1: adding hydroxyl-modified carbon nanotubes to isocyanate or a prepolymer formed by isocyanate and polyol, ball milling to uniformly disperse them under nitrogen protection, to obtain an oil phase; S2: preparing a PVA solution as the aqueous phase; S3: quickly pouring the oil phase into the aqueous phase, emulsifying to obtain a uniform emulsion without a significant oil phase, and then pouring the emulsion into a reactor for reaction to obtain an emulsion with an easily breakable capsule core structure containing the modified carbon nanotubes, namely the aqueous carbon nanotube dispersion. The polyurethane synthetic leather of the present invention has excellent conductivity and improved toughness.

The invention provides a biological tissue with bending resistance as well as a preparation method and application thereof, and belongs to the technical field of biological tissues, the biological tissue is prepared by the following method: degreasing a cross-linked biological tissue to obtain a degreased biological tissue; reacting the degreased biological tissue with a solution containing a prepolymer, and carrying out anti-calcification and dehydration treatment to obtain the biological tissue with anti-bending performance, the prepolymer is formed by isocyanate and polyol, and the biological tissue uses the prepolymer, so that the reaction can be better controlled, and the situation that chain extension cannot be carried out due to rapid polymerization is avoided. The biological tissue contains more hydroxyl groups, the prepolymer can ensure that-NCO of the prepolymer is combined with the hydroxyl groups in the biological tissue, meanwhile, the prepolymer contains not less than three-NCO groups, and after the prepolymer reacts with the hydroxyl groups on the biological tissue, network cross-linking exceeding glutaraldehyde two-point linear cross-linking is formed, so that the toughness and the strength of the material can be better improved.

A method can include preparing a reaction mixture by combining: an isocyanate component; and an isocyanate-reactive component comprising at least one Lewis acid catalyzed polyether polyol having 90 weight percent (wt.%) or more of polypropylene oxide, a primary hydroxyl group concentration of at least 30 weight percent, a functionality of at least 2, an OH number in the range of 100 mg KOH / g to 800 mg KOH / g, and an average acetal content of at least 0.05 weight percent, the isocyanate-reactive component comprising at least one Lewis acid catalyzed polyether polyol having 90 weight percent (wt.%) or more of polypropylene oxide, a primary hydroxyl group concentration of at least 30 weight percent, a functionality of at least 2, an OH number in the range of 100 mg KOH / g to 800 mg KOH / g; and combining the reaction mixture with one or more reinforcing materials.

This invention discloses an anhydrous soothing and repairing spray based on small molecule transdermal technology and its preparation method, relating to the field of skincare sprays. The invention constructs a bioactive system centered on yeast fermentation product filtrate, lactobacillus fermentation product, and lactobacillus / ginseng root fermentation product filtrate, and synergizes with small molecule polyols to form a transdermal delivery network. This achieves efficient and stable dispersion and deep delivery of multiple active ingredients under anhydrous conditions, significantly reducing the system's water activity and improving the overall stability and activity retention rate of the product. By introducing functional ingredients such as acetyl hexapeptide-8, sodium hyaluronate, niacinamide, 3-o-ethyl ascorbic acid, and tranexamic acid, a synergistic effect of soothing repair, anti-inflammatory calming, antioxidant, and anti-wrinkle firming is achieved.

The present invention provides a modified polyurethane bearing substrate formed from a modified polyurethane. The modified polyurethane includes a soft segment formed from a polyol and a hard segment formed from a diisocyanate and a chain extender, the chain extender being a diacid anhydride. The common logarithm of the ratio of the storage modulus of the modified polyurethane at -30°C to the storage modulus of the modified polyurethane at 150°C is from 0.40 to 1.30.

A method of forming polyurethane rigid foams includes hydrolysing an amount of food waste, extracting lipids from the hydrolysed food waste, forming polyols from the lipid, and forming polyurethane rigid foams with the polyols.

The present invention aims to provide a method for constructing a spalling prevention layer that simplifies the work process compared to conventional methods and can form a spalling prevention layer with sufficient strength and elongation at fracture. [Solution] A method for applying a peeling prevention layer, comprising a step of forming a peeling prevention layer by applying a urethane-based composition to the exterior wall of a building and curing it, wherein the urethane-based composition contains a urethane prepolymer having isocyanate groups and a filler, and the urethane prepolymer is formed from a polyisocyanate compound having multiple isocyanate groups per molecule and a polyol containing butanediol and polyoxyalkylene polyol, and the molar equivalent ratio of butanediol to polyoxyalkylene polyol (butanediol:polyoxyalkylene polyol) is 60:40 to 75:25.

The application provides a preparation method of a heat-conducting agent and a preparation method of a heat-conducting and flame-retardant rope. The application disperses nano aluminum nitride into an alcohol solvent, then adds a silicate material, coats the silicate material onto the surface of aluminum carbide through a liquid phase method, and prepares a silicon dioxide and carbon coated aluminum nitride material through high-temperature calcination (under an inert atmosphere). The method has the advantages of simplicity and controllable coating layer, and has hydrophobic and synergistic heat-conducting functions. The preparation method of the heat-conducting and flame-retardant rope is different from the traditional heat-conducting agent treatment of a textile rope. The isocyanate reacts with water to form a carboxylic acid group, and the carboxylic acid group and phytic acid and a ternary alcohol glycerol crosslink at high temperature. On the one hand, the phytic acid of the flame-retardant component is grafted in a chemical bond mode, and on the other hand, the isocyanate and the polyhydric alcohol form an organic coating layer similar to a polyurethane structure to firmly adhere the modified heat-conducting agent to the textile rope, so that a multifunctional material with heat-conducting and flame-retardant functions is formed.

The application relates to a preparation method and application of a eutectic solvent catalyst, and the patent effectively improves the form and solubility of the catalyst by forming a eutectic solvent (DES) from stannous salicylate and a polyhydric alcohol, and forms a high-efficiency composite catalyst system. Under the condition of extremely low catalyst consumption, the catalyst system can realize the rapid polymerization of propiolactone, and high-molecular-weight polylactic acid is prepared. The method is simple in operation and low in cost, and is suitable for the industrial demand of efficiently preparing polylactic acid in a reaction extrusion process.

The present invention relates to a stick-type cosmetic composition having a reduced white trace. The cosmetic composition has excellent long-term storage stability and can maintain a smooth appearance for a long time by significantly reducing a white trace, which may occur on the surface of an emulsion during emulsion formulation, by including an optimal combination of specific waxes or using a polyol.

This invention belongs to the field of hydrate technology, specifically relating to a method for removing the water of crystallization from inorganic hydrates at low temperatures while simultaneously achieving a structural transformation to obtain a stable anhydrous product. The invention involves mixing the inorganic hydrate with an acid solution to obtain a mixture; the acid solution includes an inorganic acid and a solvent, wherein the inorganic acid is the inorganic oxyacid corresponding to the oxyacid anion of the inorganic hydrate, and the solvent is water or an aqueous solution, wherein the aqueous solution is a solution formed by water and a polyol; the mixture is covered and allowed to stand to obtain a settled material; the settled material is then heat-treated to obtain an intermediate product, which includes the stable anhydrous product corresponding to the inorganic hydrate and the acid solution after the reaction. The method provided by this invention can achieve dehydration and structural transformation of inorganic hydrates at relatively low temperatures, thereby significantly saving energy, reducing carbon emissions, and making the entire reaction process milder, easier to implement, reducing equipment investment, and suitable for industrial application.

The invention provides moisturizing gel as well as a preparation method and application thereof, and relates to the technical field of cosmetics. The moisturizing gel is prepared from the following components in percentage by mass: 1 to 3 percent of moisturizing active ingredients, 25 to 48.5 percent of polyhydric alcohol, 50 to 70 percent of gel, 0 to 5 percent of preservative and 0 to 5 percent of water, wherein the sum of the mass ratio of the polyol to the gel is greater than or equal to 90%. According to the invention, by adjusting the mass ratio of the gel to the polyol, the gel and the polyol form a stable net-shaped structure, so that the moisturizing active ingredients can be stably dispersed in the net-shaped structure to form stable moisturizing gel, and the effects of keeping the system stable, being low in irritation and moisturizing without adding an irritant emulsifier are achieved; moreover, due to the specific proportion, the moisturizing gel can achieve higher stability without adding preservatives, and the preservation time of the moisturizing gel is prolonged.