30results about How to "Has self-emulsifying properties" patented technology

The invention relates to a polyurethane-polyacrylic ester interpenetrating network polymer and a preparation method and the application thereof. The following steps are comprised: self-emulsifying anionic polyurethane water dispersoid containing carbon-carbon double bonds are synthesized through a step addition polymerization method; the synthesized polyurethane water dispersoid is used as seeding emulsion and polymer surface active agent; in-situ emulsion polymerization is carried out on acrylic ester monomer in an emulsification system by using dropwise adding evocating agents, so that the pre-emulsifying acrylic monomers in the system can be polymerized and (or) cross-linked on the inner part and the surface of seeding emulsion particles, and then the polyurethane-polyacrylic ester interpenetrating network polymer emulsion can be obtained; after dried, emulsion powder which has good water resisting property and cohesiveness when re-dispersed in water is obtained; the polyurethane-polyacrylic ester interpenetrating network polymer not only can be used with inorganic cementing materials such as cement, white lime or plaster for manufacturing overcoating mortar, pointing-joint agents, plastering agents and building bonding agents, but also can be independently used as film forming binder for preparing dry powder emulsion coating.

The invention discloses a preparation method for a polysiloxanes-amidopolyether block copolymer, comprising the steps of preparation of an intermediate of alpha, omega-hydrosiloxane, preparation of an intermediate of alpha, omega-polysiloxanes diepoxide, and preparation of the polysiloxanes-amidopolyether block copolymer. The polysiloxanes-amidopolyether block copolymer provided in the invention enables a textile finishing agent to be stable under condition of high temperature, a polyelectrolyte, a high pH value or a high shear force without breaking emulsion, sticking to a roller or a cylinder and producing oil marks, allows textiles finished to be returned for repairing, and is widely used in fields like chemical fiber, natural fiber and blended products thereof, etc.

The invention discloses a preparation method of an anionic organic-solvent-free and emulsifier-free polyurethane microemulsion. The preparation method comprises the following steps of: carrying out polymerization of isocyanate and polymer polyol by replacing an organic cosolvent used in the preparation process of the traditional polyurethane-polyacrylate microemulsion with inertial vinyl monomers to prepare a polyurethane prepolymer of which the terminal group is provided with unsaturated bonds, carrying out cooling, neutralization and aqueous dispersion on the polyurethane prepolymer, and then further initiating the polymerization of the vinyl monomers under the action of a water-soluble initiator to prepare the anionic organic-solvent-free and emulsifier-free polyurethane microemulsion. The preparation method disclosed by the invention thoroughly gets rid of the organic cosolvent added in the traditional waterborne polyurethane and achieves a real sense of environmental friendliness; and in addition, no emulsifier is added in the preparation process, and the prepared anionic organic-solvent-free and emulsifier-free polyurethane microemulsion has nano-scale particle diameter, is excellent in performance and can be used for a waterborne coating and the field of adhesives due to formula adjustment.

The invention discloses a preparation method of cellulose nitrate-polyurethane-polyacrylic acid (ester) composite emulsion, which comprises using toluene diisocyanate, dealcoholized cellulose nitrate, polyether polyol, butanediol, dimethylol propionic acid and triethylamine as main raw materials, using step addition polymerization to synthesize anion polyurethane-cellulose nitrate water disperser, using the water disperser as seed emulsion, without any surface activator, via adding inducer to process in-site emulsion polymerization with polymer emulsion and emulsified acroleic acid monomer, to process polymerization and/or crosslink of pre-emulsified acroleic acid(ester) monomer in the seed emulsion seed and at surface, thereby preparing aqueous cellulose nitrate-polyurethane-polyacrylic acid (ester) composite latex particle with core-shell structure or interpenetrating polymer which can be used as filming polymer of high-performance aqueous wood dye.

The invention discloses a preparation method for anionic linear copolymerized organic silicon softening and finishing agent. Under the conditions of high salinity and high alkalinity, cationic groups playing the function of stabilization in the structure of the organic silicon softening and finishing agent are easily flocculated with a dye dispersant, the stability of emulsion is broken, and phenomena like breaking of emulsion and floating of oil are generated. The method comprises organic silicon macromolecule chain extension reaction of 1,1,3,3-tetramethyl disiloxane, addition reaction of 3-chloro-2-methylpropene and terminated hydrogen-containing silicone oil, preparation of terminated chlorine-containing and side-chain hydrogen-containing silicone oil, addition reaction of olefin acid and side-chain hydrogen-containing silicone oil, ammonolysis of an organosilicone macromolecular chain segment, preparation of terminated epoxy-containing polyether, and condensation polymerization of the organosilicone macromolecular chain segment and a polyether chain segment. According to the method, the organosilicone chain segment is subjected to anion modification, the compatibility of the emulsion to anions is improved, the introduction of the anions also greatly improves the high temperature resistance, salt tolerance, alkaline resistance properties of the emulsion, and the product can be suitable for dyeing one-bath processing.

The invention discloses a preparation method of water-based chloroethylene/isobutyl vinyl ether copolymer dispersion. 60 to 75 mass percent of chloroethylene monomer, 25 to 40 mass percent of isobutyl vinyl ether monomer, acrylic hydroxyalkyl ester or the monomer of the same kind in an amount which is 5 to 15 percent of the total mass of the chloroethylene and the isobutyl vinyl ether, and unsaturated carboxylic acid monomer in an amount which is 10 to 25 percent of the total mass of the chloroethylene and the isobutyl vinyl ether are used as raw materials; and the water-based chloroethylene/isobutyl vinyl ether copolymer dispersion is obtained by polymerization reaction, neutralization reaction, aqueous phase dispersion treatment and organic solution removal in organic solvent, initiator and organic amine neutralizer. The dispersion has low volatile organic compound (VOC) content, environmental friendliness and good cohesiveness, and is particularly suitable for producing water-based coating, water-based adhesive and water-based ink.

The invention relates to the construction field, and in particular relates to a high corrosion-resistant marine cement cementing material and a preparation method thereof, and the high corrosion-resistant marine cement cementing material comprises 20-25 parts of wollastonite; 80-100 parts of sulphoaluminate cement; 30-50 parts of nano-like hydrotalcite; 20-30 parts of fiber; 80-100 parts of coralreef sand; 50-60 parts of polyacrylamide; 20-30 parts of modified acrylic emulsion and 10-15 parts of additives; the invention aims to overcome the defects of the prior art and provide the high corrosion-resistant marine cement cementing material and the preparation method thereof. The high corrosion-resistant marine cement cementing material has the characteristics of good mechanical strength, durability and corrosion resistance, improved bending strength, improved cement density, better flocculation property, capability of reducing friction resistance between liquids, excellent impermeability, quick hardening, early strength, high later strength and the like.

The invention relates to polyurethane-urea modified self-emulsifying nanometer waterborne epoxy emulsion and a preparation method thereof. The emulsion has solid content of 40-50%, an average particle size of less than 500nm and a viscosity of 500-650(mPa*S). A chain segment in the self-emulsifying nanometer waterborne emulsion of the invention is introduced with a compound containing a nonionic hydrophilic chain segment, so that epoxy resin can have a self-emulsifying property, and the corrosion resistance and curing time of a coating can be improved by the polyurethane-urea based chain segment.A water dispersion system formed by the modified epoxy resin is then subjected to high pressure emulsification by a homogenizer and the particle size is dispersed to a nanoscale, and after a long time storage, physicochemical properties change little. Thus, the emulsion of the invention has good stability. The synthesis process of the method provided in the invention adds no organic solvent and has simple operation, thus being easy to realize.

The invention discloses high-elasticity resin modified silicone oil. The invention relates to the field of fine chemical synthesis, in particular to a high-molecular polymer, which has the main structural general formula shown as the specification, wherein A is CH2CH2O, B is a group represented as the specification, R1 is CH2CH2CH2, R is m, n, p, z, x is an integer, 3 < = x < = 5, 2 < = m < = 4, 5< = n < = 7, 105 < = p < = 145, and 2 < = z < = 4. According to the invention, a polyurethane material has a soft and hard chain segment block structure, so that the high-elasticity resin modified silicone oil is developed on the basis of the principle that the silicone oil has high elasticity and can endow a material with high elasticity, high-activity polyurea elastic resin with a soft and hardblock structure is connected on the basis of an organic silicon soft chain segment; the high-elasticity resin modified silicone oil structurally has a soft-hard chain segment, so that the high-elasticity resin modified silicone oil has a better treatment effect on fabric treatment compared with other silicone oil.

The invention provides a low-solvent synthesis method for terpolymer block silicone oil. The method is characterized by comprising the following steps: 1) adding hydrogen-terminated silicone oil withmolecular weight of 13,000-15,000 to a reaction container, and performing heating to about 80-90 DEG C while performing stirring; 2) adding allyl glycidyl ether and a catalyst chloroplatinic acid, performing heating, keeping the temperature at 115-126 DEG C, and performing a reaction for about 2 h; 3) adding polyether amine ED-2003, adding 2-methyl 2,4-pentanediol and ethylene glycol monobutyl ether simultaneously, performing a reaction at 140-150 DEG C for 6-8 h, and adjusting pH to 6-7 with glacial acetic acid to obtain the product. A mixed solvent consisting of 2-methyl 2,4-pentanediol andethylene glycol monobutyl ether is used, the quantity of solvents used in synthesis is reduced, the hydrogen-terminated silicone oil with molecular weight of 13,000-15,000 and polyether amine ED-2003are used for synthesis, and excellent handfeel is achieved.

The invention discloses a high-temperature-resistant self-cross-linking water-borne epoxy resin. The preparation method comprises the following steps: (1) dissolving an epoxy resin in N, N-dimethylformamide, introducing nitrogen, stirring and heating to 85 DEG C; (2) dissolving benzoyl peroxide in acetone, dropwise adding the acetone solution into the solution obtained in the step (1), heating to 95 DEG C, and keeping the temperature for 30 minutes; (3) slowly adding a mixed aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid and acrylamide into the reaction solution, and performing constant-temperature reaction for 4 hours; and (4) carrying out rotary evaporation to remove the solvent, and repeatedly washing with ethyl acetate to remove the unreacted epoxy resin raw material to obtain the self-cross-linking waterborne epoxy resin. According to the invention, the self-cross-linking water-borne epoxy resin is added into cement, so that the on-site slurry preparation step is simplified; and the brittleness characteristic of the oil well set cement can be improved, and the macroscopic mechanical property and compactness of the oil well set cement are effectively improved.