32results about How to "Excellent resistance to ethanol" patented technology

The invention discloses high-gloss ethanol-tolerance water-based acrylic acid amino glass winebottle stoving varnish as well as a preparation method and application thereof. The stoving varnish comprises compositions 1, a composition 2 and prepared slurry. Epoxy modified water-soluble acrylic resin is utilized to coordinate with partial methylated melamine formaldehyde resin and a naphthalene sulfonic acid catalyst, and before the use of the glass winebottle stoving varnish, the epoxy modified water-soluble acrylic resin, the partial methylated melamine formaldehyde resin and the naphthalene sulfonic acid catalyst are mixed with a glycidoxypropyltrimethoxysilane coupling agent to dilute, so that the glass winebottle stoving varnish baked at the temperature of 150-180 DEG C has sky-high paint film glossiness, excellent ethanol-tolerance and repainting performance, and outstanding paint film adhesive force, and the VOC content of the product is greatly reduced. According to the invention, the TVOC of the glass winebottle stoving varnish product can be controlled below 106 g / L, and is far smaller than the limited value of 250 g / L required by the strictest environmental protection standard (HJ / T201-2005) in the paint industry, so that the environmental protection performance of the water-based amino glass winebottle stoving varnish is greatly highlighted.

The invention relates to a water-based polyurethane, which is a high-performance water-based polyurethane chemically modified by functionalized polyhedral oligomeric silsesquioxane and a multifunctional compound, has a network structure, and exhibits improved mechanical properties and heat resistance, Lower water absorption rate and good solvent resistance; the present invention also relates to a preparation method of high-performance water-based polyurethane, which is prepared by introducing functionalized polyhedral oligomeric silsesquioxane for chemical side chain grafting, and through multifunctional The compound forms a network structure, the process is simple and the process is easy to control.

The invention relates to a glycidyl methacrylate modified hydroxy acrylate dispersion and a new synthesis technology thereof. The synthesis technology comprises the following steps: evenly mixing 3-5parts of glycidyl methacrylate, 1.5-2.5 parts of peracid, 2-3 parts of cosolvent and 30-40 parts of acrylate monomers, heating up to 50-60 DEG C, carrying out a reaction for 0.5-1.0h, then heating upto 120-135 DEG C, and continuously reacting for 1-2h; cooling to 70-80 DEG C, adding a neutralizing agent, adding deionized water, stirring and dispersing for 1-2h, and discharging to obtain the glycidyl methacrylate modified hydroxy acrylic dispersion.

The invention provides a method for improving yield of ethanol produced by sugar beet fermentation. Composite alcohol enzyme is coordinated with ultrasonic wave to treat a sugar beet raw material, so that cellulose and hemicellulose in the sugar beet raw material are decomposed to generate fermentable sugar; the colloid is decomposed, so that pipeline blockage is avoided; and the protein is decomposed into amino acid and dipeptide, so that a nitrogen source is provided for saccharomycetes, the load of amino acid anabolism of saccharomycetes cells is lightened, and more substrate is turned to fermentation for producing the ethanol. Pentose and hexose can be simultaneously utilized in the adopted mixed yeasts. The method solves the problems of low yield of the ethanol produced by sugar beet fermentation, high residual sugar of fermentation solution, long fermentation time and the like. By the method, the ethanol content of the fermentation solution is increased by 2.77 to 3.67 percent; and at the temperature of 20 DEG C, the ethanol volume concentration of the fermentation solution is 9.3 to 12.8 percent, the residual total sugar is 0.15 to 0.45 percent, and the ethanol yield of the raw material is 12.9 to 14.1 percent.

The invention provides a preparation method of an adhesive paint. The method comprises: taking a polyurethane hard segment as a side chain, taking an acrylic acid soft segment as a main chain, mixing the polyurethane hard segments and the acrylic acid soft segment according to a certain mass ratio, then adding various auxiliary-agent filling materials such as a plasticizer, a flexibilizer, a thixotropic agent and a light stabilizer, to finally obtain the adhesive paint for a plastic package gold-stamping film. By using the preparation method of the adhesive paint, the prepared adhesive pain has the advantages of being good in wetability, resistant in high temperature, resistant in rub, tolerant in acid and alkali, tolerant in alcohol, resistant in ultraviolet radiation aging, resistant in yellowing, and good in hot stamping and cutting performances.

The present invention provides a urethane resin composition characterized by comprising a urethane resin (A), an olefin resin (B), water (C), and a carbodiimide compound (D) having a carbodiimide equivalent of 340 or higher. The present invention further provides a surface treatment agent characterized by comprising the urethan resin composition. The present invention furthermore provides an article characterized by including a layer formed from the surface treatment agent. The urethane resin (A) has a urethane bond content preferably in the range of 980-4,000 mmol / kg. The urethane resin (A) has a urea bond content preferably in the range of 315-850 mmol / kg.

The invention discloses water-soluble triazinyl sulfuryl polyurethane. The triazinyl sulfuryl polyurethane is characterized in that a preparation method comprises adding vacuum-dehydrated bis(4-isothiocyanatophenyl) sulfone and polyethylene glycol 4000 into a three-neck flask with a stirring device; adding a high boiling point solvent; stirring and reacting for 2 to 3 hours in a nitrogen or inertgas atmosphere at 65 to 75 DEG C; then adding a catalyst; raising the temperature to 80 to 85 DEG C; performing stirring reaction for 8 to 10h; then adding 2-vinyl-4,6-diamino-1,3,5-triazine and a polymerization inhibitor, continuously stirring to react for 6-8 hours, cooling to room temperature after the reaction is finished, then precipitating in acetone, carrying out suction filtration, washinga product with dichloromethane for 3-5 times, and then carrying out rotary evaporation to remove dichloromethane to obtain the water-soluble triazinyl sulfonyl polyurethane. The invention further discloses preparation and application of the water-soluble triazinyl sulfuryl polyurethane in decorative coatings of wine bottles, perfume bottles, decorative lighting, home decoration glass products, glass instruments and the like.

The invention discloses a preparing method for persistent viscosity waterborne polyurethane dispersoid. The method includes the following steps of 1 synthesizing hard shell layer prepolymer, wherein a hyperbranched active polymer, isocyanate and a hydrophilic chain extender react to obtain the hyperbranched active prepolymer; 2, synthesizing a viscous core prepolymer, wherein macromolecule polyhydric alcohol, isocyanate and a hydrophilic chain extender react under the action of a catalyst to prepare the hyperbranched active prepolymer; 3, grafting the core-shell prepolymers, wherein the prepolymer prepared in the step 1 and the prepolymer prepared in the step 2 are mixed to react; 4, preparing the persistent viscosity dispersoid, wherein after deionized water is added, the prepolymer of the grafted network prepared in the step 3 is dispersed at a high speed to be emulsified, an appropriate amount of micromolecule amine is added according to needs to further conduct a chain extension reaction to obtain the product finally. The product prepared through the method has excellent initial viscosity, persistent viscosity, peeling strength, water tolerance and ethanol tolerance and is high in cohesion, and no adhesive residue exists after a matrix is peeled.

The invention relates to a p-hydroxybenzoic acid glycidyl ester modified hydroxy acrylic acid dispersoid and a preparation method thereof. The selected peracid compound not only can provide reactive hydrogen, but also can serve as an initiator, and the p-hydroxybenzoic acid glycidyl ester modified novel hydroxy acrylic acid dispersoid is prepared by a one-pot method; in a preparation process, useof a reaction reagent, a cosolvent and the like is reduced, and the prepared hydroxy acrylic acid dispersoid is excellent in performance, high in solid content and hydroxyl value and low in VOC content; and moreover, hydroxy acrylic acid dispersoid paint prepared by the invention is excellent in waterproofness and ethanol resistance.