40 results about "Polyol" patented technology

The invention refers to a kind of plant fibre liquefied and the manufacturing method, and the usage. It is made up by mixing 100 shares of polyatomic alcohol, 0-12 shares of phenol, 1-15 acid and heating them to 110-160deg.C, then adds in dried and crushed plant fibre material about 5-40 shares, reacts for 20-150 minutes, then cools them with ice. The product can be used to produce polyurethane foaming material. The plant fibre liquefied material not only can be lumber fibre material, but also can use other plant fibre material, it upgrades the use of material other than lumber resources, it reduces the consumption of chemical agent, the other hand, it can improve the flexibility of high polyurethane.

The invention discloses a synthesis method for terpolymer block silicone oil. The synthesis method is characterized by comprising the steps of: (A) adding 100 parts by weight of dimethyl cyclosiloxane or octamethyl cyclotetrasiloxane, 4 parts by weight of epoxy-terminated disiloxane and 15 parts by weight of dimethylacetamide, raising the temperature to 70-80 DEG C, adding 0.02-0.1 part by weight of base catalyst, raising the temperature to 110-120 DEG C, reacting for 3-4 hours, slowly opening vacuum, extracting solvents and low molecular weight matters, continuously raising the temperature to 140-145 DEG C, maintaining the temperature and the vacuum for 2 hours, so as to obtain epoxy silicone oil; and (B) adding 80-100 parts by weight of epoxy-terminated silicone oil, 6-30 parts by weight of polyether polyol and 150 parts by weight of isopropyl alcohol, carrying out backflow reaction for 6-15 hours at 80-86 DEG C, and decompressing and removing the isopropyl alcohol or adding a propylene glycol displacement solvent, so as to obtain amino polyether block silicone oil. By utilizing the terpolymer block silicone oil disclosed by the invention, the fabric has good hand feel, namely fluffy feel and smooth feel, cannot be yellowed or is slightly yellowed.

The invention relates to a high-strength and high-modulus polyvinyl alcohol fiber and a melt spinning method of the high-strength and high-modulus polyvinyl alcohol fiber. The method comprises the following steps that polyvinyl alcohol, water and polyatomic alcohol are subjected to full swelling after being uniformly mixed; the polyvinyl alcohol subjected to the full swelling is added into a double-screw-rod extruding machine and is then subjected to full fusion to be extruded, and melt fine flows form a primary fiber after air blowing cooling; and the prepared primary fiber is subjected to the drying by a hot air drying oven, multistage stretching and tense heat setting to form the polyvinyl alcohol fiber. The preparation method of the prepared polyvinyl alcohol fiber has the advantage that through the hydrogen bond compounding among water molecules, polyatomic alcohol and polyvinyl alcohol molecules, the melt spinning and the high-power stretching of the polyvinyl alcohol are realized. The polyvinyl alcohol fiber prepared by the preparation method has the advantages of fiber degree controllability, high strength and high modulus, and can be widely applied to the field of civil engineering concrete.

Adhesive systems comprising: (A) an isocyanate group-containing prepolymer prepared by reacting: (A1) an aliphatic isocyante; and (A2) a polyol having a number average molecular weight of ≧400 g/mol and 2 to 6 OH groups; and (B) a curing component comprising: (B1) an amino group-containing aspartate ester of the general formula (I);

wherein X represents an n-valent organic radical derived from a corresponding n-functional primary amine X(NH₂)_n, R₁ and R₂ each independently represent an organic radical having no Zerevitinov active hydrogens and n represents a whole number of at least 2; and (B2) an organic filler having a viscosity of 10 to 6000 mPas at 23° C. measured according to DIN 53019; their use in wound and tissue incision closure, adhesive films comprising the same and dispensing systems therefor.

A fibreboard comprising dried plant fibres added with binder resins obtained from a reaction between a diisocyanate and a polyol derived from natural oils or fatty acids, and formed by pressing at a temperature range of 50° C. to 150° C.

The invention relates to a continuous preparation method of flame retardant polyether polyol. The method comprises the following steps: (1) respectively preheating a hydroxy compound and a polyether component, and subsequently adding the preheated hydroxy compound and the polyether component into a reaction tower for reaction according to the mass ratio of (10:90)-(50:50), so as to obtain crude grafted flame retardant polyether polyol; (2) spray-drying the obtained crude grafted flame retardant polyether polyol to obtain the flame retardant polyether polyol. The synthesized flame retardant polyether polyol is good in flame retardancy, and the foam oxygen index of polyurethane foam prepared from the flame retardant polyether polyol is greater than or equal to 28% without an additional flame retardant. Through collision reaction in a tower reactor, the production period is shortened to be 1-2 hours, that is, the production period is shortened by about 50% when being compared with that of the conventional interrupted process; a product is highly dispersed, the viscosity is less than or equal to 3500mpa.s (at 25 DEG C), and the product is free of layering after being preserved for more than 1 year, and is good in storage stability.

The invention discloses water-based alkyd-acrylate dispersion as well as a preparation method and application thereof. The water-based alkyd-acrylate dispersion is prepared from the following raw materials: alkyd resin, an acrylate monomer, texanol, an initiator and a neutralizer, wherein the alkyd resin comprises the following raw materials: rosin, vegetable oil, polyol, phthalic anhydride, maleic anhydride, trimellitic anhydride, D40 solvent oil, an alcoholysis catalyst, an esterification catalyst and texanol. The water-based alkyd-acrylate dispersion is prepared from the raw materials through a chemical copolymerization method; wherein the particle size of the nano titanium dioxide is 178-188 nm, the Mw/Mn is 2.93 to 2.96, the grafting rate is 51-57%, the particle size is small and uniform, the stability is better, the grafting rate is high and the molecular weight distribution is more uniform; a molecular chain contains conjugated double bonds, carboxyl and other functional groups,so that the crosslinking density can be improved, the water absorption rate of a paint film is reduced, and the hardness, adhesive force, salt fog resistance and other properties of the paint film are improved.

The invention relates to a method for dyeing a polyester fiber type material by using an oligomer removing agent. The method comprises the following step: adding the oligomer removing agent and a dyeing assistant into a dyeing bath together to dye the polyester fiber type material, wherein the formula of the oligomer removing agent comprises the following raw materials: 10-20 parts of dicarboxylic acid di(C1-C4) alkyl ester, 14-26 parts of aromatic di(C1-C4) carboxylic acid, 30-50 parts of aliphatic diol or aliphatic polyol, 10-20 parts of difunctional sulfonated monomer, 10-30 parts of polyether and 15-100 parts of polyoxyethylene sorbitan fatty acid ester. According to the method provided by the invention, by adding polyoxyethylene sorbitan fatty acid ester, good synergy is realized, the dispersion performance of a dyeing solution is enhanced, the adsorption of a condensed matter in the dyeing solution to the surface of fiber can be better inhibited, and the problems caused by a polyester oligomer in a dyeing process are further solved. Thus, the dyeing of fabric is uniform, the color fastness is improved, and the stability of a product is enhanced.

The invention belongs to the field of foam gap fillers, and especially relates to an ultrahigh-foaming amount polyurethane foaming agent. The ultrahigh-foaming amount polyurethane foaming agent comprises, by mass, 10-70 parts of polyether polyol I, 40-60 parts of mixed polyether polyol II, 3-5 parts of a foam stabilizer, 30-80 parts of paraffin, 3-5 parts of polyether modified polysiloxane, 2-4 parts of a catalyst, 300-400 parts of isocyanate, 40-80 parts of methyl ether, and 30-60 parts of liquefied petroleum gas. A mono-component polyurethane foam gap filler keeps the foam hole size unchanged, makes the foaming amount increase by 58-70% and has a very substantial effect through adding assistants and adjusting the formula without changing the proportion of PAPI or increasing the weight of the above product.

The invention belongs to the technical field of high molecular materials, and discloses a casting polyurethane elastomer and a preparation method thereof. The elastomer is prepared by the following components in parts by weight: 40-60 parts of polyether polyol, 20-40 parts of polymethylene polyphenyl polyisocyanate, and 10-30 parts of chain extender. The preparation method has the advantages of saving energy and being simple to operate and convenient for construction, has low requirement on equipment and has wide application prospect.

Polyol and fatty acid is reacted under the catalysis of metal oxide to obtain polyol fatty acid ester. The polyol is glycol or polyglycol; the fatty acid is lauric acid, palmitic acid, stearic acid, oleic acid, etc.; and the esterification catalyst is metal oxide. The production process is simple, reliable and stable. During the process, the metal oxide is first reacted with fatty acid to produce fatty acid soap, and the fatty acid soap then catalyzes the esterification. The reaction is completed under the homogeneous phase condition and the fatty acid soap, normally as the processing assistant for rubber, needs no separation from the product. The product of the present invention is used as dispersant for mixing rubber to raise the inherent quality and outer appearance of rubber product.

The invention relates to phosphorus-containing vegetable oil based flame-retardant polyol and a preparation method and application thereof. The preparation method of the phosphorus-containing vegetable oil based flame-retardant polyol comprises the following steps: carrying out epoxide reaction on tung oil methyl ester with hydrogen peroxide and methanoic acid under the catalyzing effect of a home-made phase transfer catalyst at first to prepare multi-functionality-degree epoxidized tung oil methyl ester; reacting the obtained epoxidized tung oil methyl ester with reactive-hydrogen-containing DOPO (DOPO belongs to phosphorus-containing phenanthrene ring and heterogeneous ring compound, and the full name of DOPO is 9,10-diamine-9-oxygen heterocyclic-10- phosphaphenanthrene-10-oxide) to obtain the phosphorus-containing vegetable oil based flame-retardant polyol. The obtained polyol is a flame retardant, the synthesized structural flame-retardant vegetable oil based polyol is used in hard polyurethane flame-retardant foam, mechanical strength and flame retardance of the foam are improved, and a preparation process is simple, convenient to operate and easy to obtain. The phosphorus-containing vegetable oil based flame-retardant polyol is compounded with tris( 2-chloropropyl) phosphate, phosphorus-nitrogen synergistic flame retardant effect is good, the use amount of a flame retardant can be reduced, the flame retardant effect is much better than the flame retardant effect of the tris( 2-chloropropyl) phosphate which is used independent, and the oxygen index (LOI) can reach 29%.

The invention discloses a super-lubricating conduit material which comprises the following raw materials in parts by weight: 15-25 parts of isocyanate, 40-50 parts of polyol, 14-22 parts of a chain extender, 5-15 parts of a chain extender and 8-16 parts of an antibacterial agent, wherein the polyol is a mixture of polyether polyol and polyester polyol. Experimental test results show that the prepared super-lubricating conduit material has proper hardness, can smoothly enter blood vessels, and cannot cause discomfort of patients; the hardness can be changed at 25 DEG C (room temperature) and 37DEG C (body temperature), so that the higher puncture success rate is ensured, and meanwhile, the foreign body sensation of a patient is reduced after a puncture needle enters a human body; and meanwhile, the product also shows super-lubricity. Besides, the prepared super-lubricating conduit material is non-toxic, safe and not prone to yellowing, blood vessels cannot be blocked, thrombus cannot be generated, and the super-lubricating conduit material further has excellent antibacterial performance and self-healing performance and has good practical application prospects.

The invention discloses a flame retarding polymer polyol, a preparation method, and an application thereof. The polymer polyol has good flame retarding performance, is low in VOC and odor, has moderate viscosity and is convenient to use. According to the method, the polymer polyol is prepared through a free radical polymerization reaction of a vinyl monomer containing phosphorus and/or bromine with polyol in the presence of a compounding initiator and a chain transfer agent. A flame retarding polyurethane material prepared from the polymer polyol and a polyisocyanate compound in a foaming manner has excellent bearing capability and flame retardance.

The invention discloses wear-resistant and high-temperature resistant capacitor aluminum case film coating paint and a preparation method thereof. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint is mainly obtained through mixing and stirring compounds A and compounds B in raw materials according to certain weight parts, wherein the compounds A consist of polyurethane polyatomic alcohol, ethyl ketone, paraffin, isopropanol, polymethyl-benzene gadoleic acid methyl ester and attapulgite, and the compounds B consist of phenolic resin, dimethyl silicone polymer, acrylic ester copolymer modifying agents, straw ashes, silane coupling agents, 6-tertiary butyl-3-methylphenol, stearic acid and tetramethylsilane. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint has the advantages that the recipe is reasonable, the preparation method is simple, the curing effect on a capacitor aluminum case is good, a capacitor is effectively protected, the prepared film coating paint has the heat resistance performance and the wear resistance performance, and the service life of the capacitor is prolonged.

The invention relates to the technical field of chain teeth and in particular relates to a transparent flashing polyester chain tooth, a preparation method and a zip fastener. The transparent flashingpolyester chain tooth is prepared from PET (Polyethylene Terephthalate), TPU (Thermoplastic Polyurethane) modified master batch, a lubricant, an antioxidant and an ultraviolet absorbent, wherein theTPU modified master batch is prepared from isocyanate, polyol, a chain extender, a crosslinking agent and flashing powder; the flashing powder is composed of a micron-grade prism pyramid monomer polyacrylamide layer. According to the transparent flashing polyester chain tooth, the TPU modified master batch with relatively good toughness is added into a PET material, so that the transparent flashing polyester chain tooth has good toughness and anti-impact performance; furthermore, the surface of a micron-grade prism pyramid monomer is covered with the polyacrylamide layer and the crosslinking agent participates, so that the micron-grade prism pyramid monomer is uniformly dispersed in the PET material; compared with a manner of directly adding the micron-grade prism pyramid monomer or the flashing powder into the PET material, the transparent flashing polyester chain tooth has a more uniform and bright flashing property.

The invention discloses a preparation method of a waterborne polyurethane modified collagen-based concrete foaming agent. The concrete foaming agent comprises the following components in parts by weight: diisocyanate, polyether polyol, a hydrophilic chain extender, a micromolecule dihydric alcohol chain extender, a neutralizer, a hydrolyzed collagen liquid and gamma-glycidoxy propyl trimethoxy silane. According to the invention, chromium leather scraps wastes generated in a tanning process and alkali-process or acid-process hydrolysis products are used as raw materials, copolymerization modification is carried out with waterborne polyurethane, and excellent structural performance of the waterborne polyurethane is combined, so that the environment-friendly waterborne polyurethane modified collagen-based concrete foaming agent with excellent wettability, chelating property and surface activity is obtained, and defects of poor self foaming performance, poor foam stabilization performance,poor structural strength and the like of a collagen hydrolysate are effectively overcome.

The invention relates to anti-corrosion acrylic acid epoxy resin powder paint for ceramic. The paint comprises the following raw materials: glycidyl methacrylate, polyol, azobisisobutyronitrile, monoacid, di-tert-butyl peroxide, dicyclopentadiene, an initiator, maleic anhydride, epoxy resin, zinc oxide, a flatting agent, 1-o-tolylbiguanide, dodecanedioic acid, 2-mercaptobenzothiazole and titanium dioxide. According to the paint, the melting point is 200-220 DEG C, the density is 135-145g/cm<3>, and the paint has no abnormity after being soaked in 5% hydrochloric acid solution for 20-30d; the glossiness is 140%-150%, and after the artificial accelerated aging is implemented for 500h, the gloss retention rate is 94-98%; the shore hardness is 50-70H, the drying time is 20-30min, the paint cannot bubble or crinkle after being soaked in saturated calcium hydroxide for 15-35d, and the scrubbing resistance times are 1800-2200.

The invention provides a method for synthesizing heat-resistant polyurethane based on soybean oil. The method comprises the following steps in sequence: adding the soybean oil and a catalyst to a reactor; adding polyisocyanates to react to obtain a polyurethane prepolymer; adding 1, 4-butanediol and polyol oligomer containing the same hydroxy based on mole to the polyurethane prepolymer; fully stirring for 1 to 3 minutes; and tabletting through a vulcanizing machine so as to obtain polyurethane. The method for synthesizing heat-resistant polyurethane based on soybean oil has the characteristics of being simple in process and easy to operate.

The invention belongs to the technical field of heat preserving material preparation, and provides a low-energy-consumption medical refrigerator heat preserving material and a preparing method thereof. The low-energy-consumption medical refrigerator heat preserving material is prepared from, by weight, 50-75 parts of chrysotile, 15-23 parts of sepiolite, 2-9 parts of expanded perlite, 11-15 parts of polyether polyol, 11-15 parts of foaming agent, 11-15 parts of foaming stabilizer and 15-23 parts of polyurethane resin. The invention aims to provide the low-energy-consumption medical refrigerator heat preserving material and the preparing method thereof. The heat preserving material effectively reduces the heat conductivity coefficient of polyurethane foam and energy consumption of a refrigerator, the heat conductivity coefficient is 6.0-17.5 Mw/m.K, the medical refrigerator heat preserving material is excellent in low-temperature-resistant size stability, high in compression strength, environmentally friendly and capable of being used under the long-term low temperature conditions.

The invention provides an adhesive, a preparation method thereof and a skin. The preparation method comprises the following steps: carrying out styrene-butadiene-styrene (SBS) epoxy modification: carrying out a reaction on an SBS copolymer, an organic acid and hydrogen peroxide to obtain an SBS epoxy modified product; synthesizing a main agent: carrying out a chain extension reaction on polyol anda first polyisocyanate to obtain an isocyanate prepolymer; mixing the isocyanate prepolymer, a part or all of the SBS epoxy modified product and a first solvent to obtain the main agent; synthesizinga curing agent: carrying out a reaction on isocyanate groups of a second polyisocyanate with hydroxyl groups of trimethylolpropane in a second solvent to obtain trimethylolpropane modified isocyanate; and preparing the adhesive: mixing the main agent with the curing agent to obtain the adhesive. The adhesive prepared by the preparation method provided by the invention has proper hardness and excellent tear resistance.

The invention belongs to the technical field of polymer materials, and particularly relates to application of a porous polymer film with regular pores to preparation of an artificial periosteum. The shape memory polyurethane provided by the invention is formed by polymerizing diisocyanate and a soft segment polymer, the soft segment polymer is polylactic acid, polyglycolic acid, polycaprolactone, polypolyol or a copolymer of at least two of the polylactic acid, the polyglycolic acid, the polycaprolactone and the polypolyol. The shape memory polyurethane material is combined with a water drop template method to form a porous polymer film containing a crystal structure. The porous film material has excellent mechanical properties, can meet performance requirements of application scenes such as artificial periosteum and the like, and has a good application prospect.

The invention discloses a preparation method of a graphene modified polyurethane adhesive, and the method comprises the following steps: uniformly dispersing 0.5-1 part by weight of graphene oxide in10 parts by weight of absolute ethyl alcohol, and reacting with 20 parts by weight of polyisocyanate to obtain a polyisocyanate-graphene oxide mixed solution; reacting 25 parts of triethanolamine, 30parts of sodium hydroxyethyl sulfonate, 33 parts of n-decane and 0.5 part of metallic sodium to obtain sulfonated dihydric alcohol; adding 8 parts of absolute ethyl alcohol, dissolving, and carrying out reduced pressure distillation to obtain sulfonic acid group-containing dihydric alcohol; and carrying out reduced pressure distillation on 60 parts of polyester polyol and 10 parts of the sulfonicacid group-containing dihydric alcohol, reacting with the polyisocyanate-graphene oxide mixed solution, and adding a thickening agent and a defoaming agent into the reactant subjected to chain extension to obtain the graphene modified polyurethane water-based adhesive. The adhesive is high in graphene content, good in dispersity, not prone to agglomeration, environmentally friendly and resistant to bacteria, and the use performance and the storage stability of the adhesive are greatly improved.

The invention discloses expandable graphite flame-retardant polyurethane foam and a preparation method thereof. The flame-retardant polyurethane foam is prepared from the following raw materials: 20 to 24 g of polyether polyol, 20 to 24 g of isocyanate, 2.5 to 10 g of expandable graphite and 0.025 to 2 g of seaweed essence. The preparation method comprises the following steps: finely grinding seaweed, adding the ground seaweed into polyether polyol, mixing, and mechanically stirring uniformly to obtain a substance A; adding expandable graphite into isocyanate, mixing, and mechanically stirring uniformly to obtain a substance B; and mixing the substance A and the substance B, uniformly stirring, putting into a mold, and foaming and curing at normal temperature and normal pressure. The polyurethane foam is obtained through the synergistic effect of the expansible graphite and the seaweed extract, and the polyurethane foam shows excellent flame retardant property, thermal stability and mechanical property under the condition that the usage amount of the expansible graphite is reduced.