384results about How to "Good viscosity stability" patented technology

The invention relates to a compounded stabilizer, normal temperature yoghurt containing the compounded stabilizer, and a preparation method of the yogurt. The compounded stabilizer comprises, by mass, 50-90% of esterified modified starch, 3-15% of pectin, 2-15% of agar, 4-15% of an emulsifier and 1-5% of gellan gum. The invention also provides normal temperature yoghurt containing the compounded stabilizer, and a preparation method of the yogurt. The compounded stabilizer has good process tolerance, improves the viscosity stability of a technology processed normal temperature yoghurt system and the viscosity recovery stability of a subsequent product, and allows the viscosity of yogurt at normal temperature of 20-40DEG C to be similar or greater than the viscosity of yogurt refrigerated at normal temperature of 3500-5000cp. The normal temperature yogurt prepared in the invention can be stored at normal temperature of 20-40DEG C for 4-6 months, and allows high quality yogurt to be drunk in remote cold chain lacking places.

The present invention relates to a method for glazing a food comprising applying a solution of a glaze base containing a converted starch to the food and drying the food; a process for preparing the starch; the starch prepared therefrom; and a glaze comprising the glaze bases thereof.

The invention discloses a functional PVC (polyvinyl chloride) paste. The functional PVC paste comprises the following components: PVC paste resin, PVC doped resin, a plasticizing agent, a filling agent, a heat stabilizer, a light stabilizer, an antioxidant, a mildew-proof antibacterial agent, a gas-phase silicon dioxide and the like. A preparation method of the functional PVC paste comprises the following steps of: (1) stirring: firstly mixing and stirring a part of the plasticizing agent and a liquid component uniformly, then adding a solid component, stirring uniformly, finally adding coloring stock and the remaining plasticizing agent, and stirring uniformly, so as to obtain plasticized paste; (2) grinding: grinding the plasticized paste on a three-roll grinding machine; and (3) defoaming and ageing. The paste has the advantages that the viscosity stability is good; and the paste can remain low viscosity under the action of the shearing force of a scraper in the process of producing PVC coated fabric, so that the normal production of the PVC coated fabric is guaranteed, and the surface of the prepared PVC coated fabric is smooth without the phenomena of pin holes and the like.

The invention relates to a polymer mobility control agent suitable for an ultrahigh-salinity oil deposit and a preparation method thereof, and the polymer mobility control agent is mainly used for solving the problem that a polymer can not meet the requirement for tertiary oil recovery due to poor temperature resistant property, salt resistant property and shearing resistant property in the prior art. In order to better solve the problem, the technical scheme adopted by the invention is as follows: the control agent for an amphoteric hydrophobic associated polymer comprises the following components in parts by weight of the amphoteric hydrophobic associated polymer: 5-99.9 parts of nonionic water-soluble monomers, 0-50 parts of anionic monomers or/and cationic monomers, 0.1-10 parts of hydrophobic monomers with surface activity, 0.1-5 parts of inorganic substances and 1-20 parts of surface active agents. The preparation method disclosed by the invention can be used for the industrial production of the polymer mobility control agent suitable for the ultrahigh-salinity oil deposit.

The invention relates to a compound type cleaning solution which comprises a component A, a component B and pure water, wherein the component A is composed of at least one amphoteric surfactant with 8 or more carbon atoms, and accounts for 0.1-15% of the cleaning solution by mass; the component B is at least one anionic surfactant, non-ionic surfactant or cationic surfactant with 8 or more carbon atoms, and accounts for 1-30% of the cleaning solution by mass; and the balance is pure water. In the invention, the amphoteric surfactant and other surfactants are compounded to prepare a dish hand-washing detergent which has excellent functions of cleaning, efficacy enhancing, thickening, foaming, foam stabilizing and the like and is very favorable for improving the performance of the product such as detergency, viscosity, storage stability and the like. Moreover, the amphoteric surfactant is generally in a water-soluble liquid state and can be easily mixed in a formula solution, thus the industrialization of the product provided by the invention can be easily realized.

The invention provides polyvinyl alcohol. The polyvinyl alcohol is characterized in that the average polymerization degree is no higher than 500, the blocking degree is 0.50-0.85, and the alcoholysis degree is 35mol%-65mol%. The provided polyvinyl alcohol with a low polymerization degree, a low alcoholysis degree and a low viscosity has especially excellent viscosity stability. When the provided polyvinyl alcohol is used for a vinyl polymer suspension polymerization reaction, the monomer droplet disperse dispersion capability is strong, the dispersion stability is good, and the provided polyvinyl alcohol is free from vinyl polymer polymerization conditions. The pores of the prepared vinyl polymers are distributed uniformly and the porosity is high. The removal performance of reaction residual monomers is good, the absorption capability of added plasticizers is excellent during the subsequent processing process, the processing properties are excellent, plasticizing time can be shortened, and the fisheye number is decreased.

The invention discloses a polyester resin for the rapid curing of a weather-durable powdery paint by a beta-hydroxyalkylamide. The polyester resin is obtained through carrying out a melting polycondensation reaction on the following components, by weight, 30-45% of a polyol, 45-60% of an aromatic polyprotic acid, 0-10% of an aliphatic polyprotic acid, 0-5% of a branching agent, 5-20% of an antiacid and 0.05-0.30% of an esterification catalyst. The invention also discloses a preparation method of the polyester resin. The polyester resin provided in the invention has the advantages of high glass-transition temperature and softening point, and appropriate melting viscosity and storage stability; and powdery paints prepared with the polyester resin have the advantages of excellent levelability, excellent mechanical performance, good thick film pinhole resistance and the like.

The invention provides an inorganic fine particle dispersion having at least an inorganic fine particles, a silane coupling agent, and at least one member selected from the group consisting of a basic inorganic salt and ammonium, the inorganic fine particle dispersion having a pH of 5.0 or less, and a method for forming thereof including at least adjusting the pH by using the basic inorganic salt and/or the ammonium. The invention further provides an ink jet recording medium and a method manufacturing thereof including at least applying an ink-receiving layer coating liquid formed by mixing the inorganic fine particle dispersion and a water-soluble resin onto a support.

The invention discloses amphoteric guar gum, a preparation method and application thereof. The preparation method comprises the following steps: (A) adding guar gum raw powder into a low-polar or non-polar solvent at normal temperature, and adding a basic catalyst aqueous solution into the solvent for soaking and basifying; (B) adding a cationic etherifying agent into the mixture under the pressure of between 0.05 and 0.3 Mpa; and (C) adding an anionic etherifying agent into the mixture to react, and adding a neutralizing agent to neutralize the mixture until pH is between 7 and 8, and collecting the amphoteric guar gum from reactant. The prepared product has excellent viscosity stability and higher transparency. As a thickening agent, the amphoteric guar gum can be applied to paper making, foods, textile and other fields; and as a reinforcing agent, the amphoteric guar gum can be applied to the field of paper making, and can obviously improve the baked strength of paper without reducing the softness of the paper.

The invention discloses a preparation method of heat resistant spandex fiber, belonging to the technical field of polymer textile material and preparation thereof; the preparation method comprises the following steps of: (1) mixing polyoxytetramethylene and 4,4'-methylenebis(phenyl isocyanate) according to a mole ratio of 1/1.4 to 1/2.5 for reaction to obtain a prepolymer; (2) adding non-protonicpolar solvent to the prepolymer prepared in the step (1) so that the prepolymer is dissolved in the non-protonic polar solvent to obtain prepolymer solution; (3) adding a chain extender in the prepolymer solution obtained in the step (2) to obtain spandex spinning fluid with a molecular weight of 20-300 thousands after polymerization reaction, wherein the chain extender is aromatic diamine or themixture of aromatic diamine and aliphatic diamine; (4) using the spandex spinning fluid prepared in the step (3) to obtain the heat resistant spandex fiber with a solution spinning method. Compared with conventional spandex, the product has obviously improved resistance to heat; moreover, the viscosity stability of the polymer is good.

This invention provides a liquid crystal sealing agent which can be applied to liquid crystal display panels. The liquid crystal sealing agent comprises (a) a compound containing a (meth)acryloyl group and a glycidyl group in its molecule and having a number average molecular weight of 500 to 2000, (b) a heat latent curing agent, (c) a radical polymerization initiator, and (d) a filler. The component (a), despite its high molecular weight, has high reactivity and latent curability, and thus simultaneously has a low level of solubility in liquid crystals, a high level of curability, and a high level of viscosity stability. Accordingly, the manufacture of a liquid crystal display panel using the liquid crystal sealing agent is advantageous in that, while maintaining the high level of productivity, the strength of adhesion between a substrate and a cured product of the liquid crystal sealing agent is high and the contamination of the liquid crystal can be suppressed on a low level, resulting in the manufacture of liquid crystal display panels which can realize a high level of display and a high quality.

The invention provides technology for producing a degradable and edible film by utilizing corn composite modified starch, belonging to the technical field of food processing. The technology comprises the following main production processes: firstly gelatinizing the corn hydroxypropyl-phosphate monoester composite modified starch; then adding glycerin, sorbitol, sodium alginate, carrageenan and other components which improve the film performance; carrying out tape casting on the film solution on a copper plate after homogenization and degasification; adopting a copper plate film forming conveyer belt to firstly pass through steam drying pipeline equipment and then pass through cooling pipeline equipment with relative humidity being about 50% to form a film; and finally adopting mechanical film rolling equipment to roll the film, thus producing a degradable and edible film with high strength. The film material has good mechanical performance and oil, moisture and oxygen resistance. The film can be applied to packaging of various materials such as food, health products, drugs, feed and the like.

The invention provides an environment-friendly bacteriostatic water-based ink for tipping paper, which is characterized by consisting of the following raw materials in mass percentage: 45 to 55 percent of water, 3 to 10 percent of ethanol, 1 to 3 percent of antibacterial agent, 2 to 4 percent of anti-settling agent, 9 to 15 percent of titanium dioxide, 4 to 6 percent of calcium bicarbonate, 1 to 3 percent of GR organic dye, 5 to 10 percent of GR organic dye yellow, 1 to 3 percent of GR organic dye black, and 18 to 25 percent of binder. The environment-friendly bacteriostatic water-based ink can greatly reduce usage amount of ink and contents of arsenic, mercury and lead, prevents heavy metals such as the arsenic, the mercury, the lead, cadmium, nickel and chromium in a print from causing harm to human body, improves working environment, delays dispersing time of the antibacterial agent, increases antibacterial effect, has better viscosity stability and low inflammability, can simplify workload for printing and washing, and improves production efficiency.

The invention relates to the technical field of electronic welding, in particular to low-temperature lead-free tin paste and a production technique for paste flux thereof. The low-temperature lead-free tin paste includes 87-90% of tin powder and 10-13% of paste flux by weight; the tin powder is tin bismuth base, tin bismuth copper base and tin bismuth silver base alloy, and the paste flux is composed of 35-45% of rosin, 40-48% of solvent, 5-12% of thickening agent, 4.5% of thixotropic agent and 5-8% of active agent by weight; the solvent is low-boiling point solvent; the thixotropic agent is composed of modified hydrogenated castor oil and modified polyamide wax, and the best weight ratio is 1: 2; the active agent is mainly composed of 3-6% of organic acid, 0.5-1.5% of surface active agent and 1-2% of organic amine; the paste flux is prepared according to a special technique. The low-temperature lead-free tin paste is excellent in activity, suitable for welding bonding pads with different kinds of clad layers, excellent in viscosity stability and excellent in printing property, and the welding spot corrosion is avoided.

The invention discloses a modified starch/polyacrylamide textile size composition and a preparation method thereof. The invention is characterized in that 95.0-99.9 parts of the modified starch and 0.1-5.0 parts of the polyacrylamide are physically mixed under the state of dry powder, after 625-1667 parts of de-ionized water are added into the mixture and evenly stirred, 0-5 parts of sizing grease, 0-5 parts of hygroscopic agent and 0-20 parts of other sizing materials are added and the mixture is heated to boil for 1-1.5h and lasts 5-10min for heat preservation, and the modified starch/polyacrylamide textile size composition is prepared, with the solid content of the serosity standing at 6%-16%. The sizing materials have obviously improved the mechanical property, can replace the environment-polluting PVA sizing material in large quantity and reduce the cost of the sizing materials; after the PAM and the modified starch are mixed together, the compatibility is good and the viscosity stability is excellent, the film forming of the sizing materials is intact, the surface of the sizing film is level and smooth, and the adhesion property and the sizing property of the serosity to the yarns are improved.

The present invention discloses a kind of paste natural calcium carbonate into which a porcelain clay is added for making paper and its preparation method. It is made up by using (by weight portion) 720-850 portions of natural calcium carbonate, 14-18 portions of dispersing agent sodium polyacrylate, 180-300 portions of porcelain clay and proper quantity of water as raw material through the processes of mixing, buffering, grinding, screening and separation, etc.

The invention relates to silica filler. The silica filler has a core-shell structure, wherein an inner core is silica and an outer shell is a coating layer formed by polymers. The silica filler provided by the invention is characterized in that the surface of silica is coated with the coating layer formed by the polymers, and the coating layer can improve the compatibility and the interface bonding force of the silica filler with epoxy resin, so as to reduce the viscosity and coefficient of thermal expansion of an epoxy resin composite material.