178results about How to "Good emulsification and dispersion" patented technology

The invention relates to a synthetic method for preparing colorless transparent alkyl polyglucoside, which comprises the following steps: adding glucosum anhydricum or glucose containing one crystal water and aliphatic alcohol with 8 to 20 carbon atoms into a reaction kettle in the weight ratio of 1:2.8-6.5; adding a composite catalyst containing dodecyl benzene sulfonic acid under the agitation of an emulsifying agitator; after undergoing a reaction for 4 to 8 hours at a temperature of between 80 and 120 DEG C under the vacuum condition of between -0.093 and -0.098 MPa, reducing the temperature to between 70 and 80 DEG C; adding neutralizer alkaline hydroxide, adjusting the pH value between 6 and 8 to obtain a flaxen mixture of alkyl polyglucoside and the aliphatic alcohol; and performing dealcoholization and blanching on the mixture to obtain a product of the colorless transparent alkyl polyglucoside. The method has a simple process and convenient operations. The process of the method not only can use the glucosum anhydricum, but also can use the glucose containing one crystal water, has a low cost and good quality; and the method adopts the composite catalyst, has a mild temperature, smooth water yielding and no phenomenon of foam overflow.

The invention discloses a high-functionality hydroxyl-terminated polyurethane aqueous dispersion as well as a preparation method and application thereof. The preparation method comprises the following steps: adding aliphatic diisocyanate, polyvalent alcohol, a hydrophilic chain-extending agent and a catalyst into a reaction kettle; carrying out temperature rise reaction under the protection of nitrogen gas and cooling when the NCO percent of a system reaches a theoretical value; dropwise adding an acetone solution of a dihydric alcohol chain-extending agent and a crosslinking agent, continuously reacting and diluting with acetone when the NCO percent of the system reaches the theoretical value; cooling, and adding triethylamine for neutralizing; adding water for dispersing, and adding alcamines compounds for terminating; finally, carrying out post chain extending by using ethidene diamine to obtain the hydroxyl-terminated polyurethane aqueous dispersion. According to the high-functionality hydroxyl-terminated polyurethane aqueous dispersion disclosed by the invention, an alcamines terminating agent with polyhydroxy functionality is adopted, and a polyhydroxy functional group is introduced on a polyurethane chain segment by a terminating reaction of an amine group and an NCO group; the obtained aqueous dispersion has the advantages of high solid content, small particle size and stable storage; a two-component waterborne polyurethane coating prepared by the high-functionality hydroxyl-terminated polyurethane terminating dispersion has the characteristics of high drying speed of the coating, excellent medium resistance and environment friendliness of a product.

The invention relates to a preparation method of nano pearl proteins. The preparation method comprises the following steps: crushing pearls into pearl micropowder with the average grain size of 1-4 microns, carrying out acidolysis, filtering, washing the filter residues by purified water to obtain coarse pearl proteins, adding a dispersant into the coarse pearl proteins to grind, and carrying out ultrasonic concussion in the period; and concentrating the grinded liquid by a membrane, and heating, sterilizing and storing to obtain the nano pearl proteins. The preparation method provided by the invention is simple in process, organically combines the nano grinding technology with the emulsifying and dispersing technology, and further enhances the emulsifying and dispersing effect by means of ultrasonic waves, so that the pearl protein particles effectively reach nanoscale. The pure nature and integrity of the pearl protein component can be maintained by pure physical processing, and the nano pearl proteins are uniform in particle and are easily assimilated by human body and further by skins, so that the nano pearl proteins are suitable for being used as an additive of medicines, nutrients and skin care products.

The invention discloses a low-temperature deoiling scouring agent. The low-temperature deoiling scouring agent comprises, by weight friction, 10-20% of fatty alcohol-polyoxyethylene ether (EO9), 10-20% of fatty amine alcohol-polyoxyethylene ether (EO15), 5-10% of Isomeric ten alcohol-polyoxyethylene ether (EO5), 5-15% of secondary alcohol-polyoxyethylene ether (EO9), 3-6% of solubilizer, and the allowance is deionized water. The invention further discloses a preparation method for the low-temperature deoiling scouring agent. The low-temperature deoiling scouring agent is applied to the pretreatment processes of refining, deoiling, detergent washing and the like, the deoiling problem of fabric (especially the fabric containing spandex) in the process of pretreatment is solved, and oil stain and impurities in the fabric are guaranteed to be removed effectively. The functions of dispersing, emulsifying and wetting are achieved, the permeability is good, the form is little, and detergency is strong.

The invention provides an aromatic hyperbranched polymer surfactant and a preparation method thereof and particularly relates to a preparation method of the aromatic hyperbranched polymer surfactant. Gallic acid and polyhydroxy monomers are adopted to be synthetized into hydroxyl terminated hyperbranched polymer through a one-step method, long-chain unsaturated fatty acid or saturated acid is reacted with the hydroxyl terminated hyperbranched polymer to obtain the aromatic hyperbranched polymer surfactant. The common natural multiterminal monomer gallic acid and the polyhydroxy monomers are reacted, the surfactant with traditional micromolecules is obtained through esterification reaction, and the surfactant can reduce characteristics of surface activity of water, simultaneously has a unique molecular structure of hyperbranched polymer, and is novel in the field of surfactant.

The preparation method of high-purity cationic monomer dialkyl disubstituent allyl ammonium halide includes tertiary amination, neutralization reaction and tertiary amination reaction and quaterisation, in the reactor still with back-flow condensation device adding substituent halopropylene and dialkyl amine aqueous solution, adding a certain quantity of water to regulate water-phase and oil-phase, drop-adding sodium hydroxide aqueous solution, uniformly mixing, heating and heat-insulating, reduced pressure distillation, reduced pressure filtering of centrifugal filtering to remove crystal sodium chloride, decolouring said solution by using active carbon, then filtering to remove action carbon to obtain the invented product. Said invented reactions can be implemented under the condition of low temperature.

The invention relates to a self-repairing microcapsule, a preparation method and an application thereof. The microcapsule comprises a capsule core and a repairing microcapsule wall on the external surface of the capsule core, the capsule core is a repairing agent, the repairing microcapsule wall is composed of styrene-maleic anhydride and gelatin, wherein, the mass ratio of the repairing agent to styrene-maleic anhydride to gelatin is 5-15:1-2:1-5; the self-repairing microcapsule is prepared by employing a complex coacervation method; and the self-repairing microcapsule is used for repairing the cracks of cement-based materials. Compared with the prior art, the synthetic method is simple, synthetic efficiency is high, adverse impact of the noxious material and the additionally added emulsifier during a synthesis process can be better solved, the self-repairing microcapsule has environmental protection, and can be widely used for repairing the cracks of cement-based materials.

The invention relates to a feed, in particular to a preparation method of a powdered oil feed. The preparation method mainly solves the technical problems that the powdered oil feed in the prior art is easy to melt, oxided and deteriorated and is difficult to preserve, a carrier of the traditional oil powder is a non-nutritive substance such as furfur, corn (cob) flour, modified starch, powder fiber and the like, only fat is provided, other nutritional ingredients are low, and the powdered oil feed can only serve as energy feed on an aspect of animal demand. By a special method, the carrier in the oil powder is replaced to animal and vegetable protein from the non-nutritive substance. The method comprises the following steps of: adding and mixing animal fat and vegetable fat according to proportion; adding an emulsifier into a mixture according to proportion, and performing high-speed emulsification; homogenizing the emulsified mixture by a homogenizing machine; and adding animal protein, vegetable protein, vitamin, mineral substances and trace elements into the homogenized mixture according to proportion, mixing in a solid-liquid stirring and mixing machine; and packaging.

The invention discloses a preparation method of water-based fast dry low VOC alkyd paint, and relates to the field of paint. The preparation method is as follows: fast dry type alkyd resin is first synthesized, and then emulsified to obtain the alkyd resin, and finally the water-based fast dry low VOC alkyd resin paint is produced using the emulsion as raw material. By adopting a high polymerization method in the alkyd resin synthesizing technology, the hard drying time of the alkyd resin can be effectively shortened, then the drying time of the final water-based paint product is shortened, and the customer's construction cycle is shortened. The emulsion has low VOC content, excellent water resistance property, stability and film formation property. During the whole technological process, the self-made fast dry type alkyd resin is selected, and the content reaches 99% or above. In the process of emulsification and paint preparation, no organic solvent is added; the VOC content in the final paint is controlled to be 60 g / L or below, and the low VOC content water-based alkyd paint is actualized.

The invention discloses a stripping agent with complex formulation of mineral oil and an emulsifying agent for a drying cylinder. The stripping agent comprises mineral oil, the emulsifying agent and water. The mass ratio of the mineral oil to the emulsifying agent is 9-10:1, and the mass ratio of the total mass of the mineral oil and the emulsifying agent to water is 1:2-4. An externally spraying form is used for the stripping agent for the drying cylinder, so that a lubricating layer is formed on the contact interface of the drying cylinder and paper, breakage of drying parts is reduced, and smoothness, glossiness and other performance indices of paper sheets are greatly improved; at the same time, the drying cylinder and a drying net are protected, service life of the drying cylinder and the drying net is prolonged, production efficiency and product quality of a paper machine are improved, and the problem that overall performance is not ideal in the prior art is overcome.

The invention discloses a biological deinking agent. The biological deinking agent is prepared from, by weight, 8-25 parts of biomass raw materials, 2,000-150,000 U / g of biological enzymes, 15-40 parts of surface active agent, 1-5 parts of acid or alkali and 5-20 parts of inorganic salt electrolyte. The biological deinking agent is mainly formed by mixing the biomass raw materials, the biological enzymes and the surface active agent, a biological matrix is mainly adopted in the obtained biological deinking agent, the quantity of adopted chemical additives is small, the biological deinking agent is degradable, environmentally friendly and good in deinking effect, and the whiteness of paper obtained after deinking of the deinking agent is high.