30results about How to "Improve self-crosslinking" patented technology

The invention discloses a water-based polyacrylate emulsion, which is prepared from a preliminary emulsion, a seed emulsion, a secondary emulsion, 10% adipic dihydrazide aqueous solution and ammonia water, wherein the preliminary emulsion is prepared from methyl methacrylate, butyl acrylate, acrylic acid, diacetone-acryloamide, sodium alkyl amide vinyl sulfonate, fatty alcohol-polyoxyethylene ether and de-ionized water; the secondary emulsion is composed of monomers and an emulsifier, and the monomers include methyl methacrylate, butyl acrylate, acrylic acid and diacetone-acryloamide; and the emulsifier is prepared from fatty alcohol-polyoxyethylene ether and de-ionized water. The water-based polyacrylate emulsion is characterized in that diacetone-acryloamide (DAAM) is introduced into the system and simultaneously, adipic dihydrazide (ADH) is introduced to modify the branch chain so that the cross-linking sites in a system can be increased through introduction of diacetone-acryloamide (DAAM) and adipic dihydrazide (ADH) to modify a branch chain, so that the self-cross-linking performance of water-based PA can be improved and medium-temperature self-cross-linked base slurry is formed; and the roasting temperature can be appropriately reduced by 10-30 DEG C so that energy source can be saved.

The invention relates to a self-crosslinking sulfonate-base epoxy ester aqueous dispersion and an anti-corrosive primer thereof. The self-crosslinking sulfonate-base epoxy ester aqueous dispersion is characterized in that the aqueous dispersion is prepared by introducing a sulfonate functional monomer into epoxy resin, wherein vegetable oil or fatty acid, the epoxy resin and the functional monomer containing a sulfonate base undergo esterification reaction in the presence of a catalyst; when the acid value is qualified, a latent solvent and a neutralizing agent are added into the mixture; andfinally, the mixture is diluted by deionized water to obtain the sulfonate-base epoxy ester aqueous dispersion. An aqueous anti-corrosive primer prepared by using the epoxy ester aqueous dispersion as a base material has excellent storage stability, and waterproof and anti-corrosive properties.

The invention discloses a preparation method of a water-based polyacrylate emulsion. The preparation method comprises the following steps: 1) preparing a pre-emulsion, namely adding components of the pre-emulsion into a pre-reaction kettle, rising the temperature to 55 DEG C, and mixing for 10 min to prepare the pre-emulsion; 2) preparing a seed emulsion, namely adding a polymeric kettle backing material into a reaction kettle at first, mixing, extracting 1 / 4 of the pre-emulsion into the reaction kettle, rising the temperature to 75 DEG C, dropwise adding 1 / 4 of compound initiator, and reacting for 30 min to prepare the seed emulsion; and 3) producing an emulsion polymerization reaction. According to the preparation method, diacetone acrylamide (DAAM) is introduced into a system and adipic dihydrazide (ADH) is introduced for modifying branch chains at the same time, and the number of cross-linked sites in the system can be increased, thereby improving the self-crosslinking performance of water-based PA (polyacrylate) and forming medium-temperature self-crosslinking base mud; and the baking temperature can be properly reduced by 10-30 DEG C, so that the energy resources can be saved.

The invention discloses automatic repair acrylic microgel self-emulsifying emulsion and a preparation method thereof, belonging to the technical field of modified coatings. The acrylic microgel emulsion comprises a shell layer and a core, wherein the shell layer is prepared from isobornyl methacrylate, cyclohexyl methacrylate, 3-mercaptopropionic acid, styrene, 2-acrylamide-2-methyl-1-propanesulfonic acid (AMPS), methylol acrylamide and potassium persulfate; the core is prepared from trimethylolpropane triacrylate, 2-acrylamide-2-methyl-1-propanesulfonic acid (AMPS), lauryl methacrylate, 3-mercaptopropionic acid, ethyl acrylate, glycidyl methacrylate, methacryloxy propyl trimethoxyl silane and potassium persulfate. The emulsion provided by the invention is prepared in a water phase, and has the advantages of being good in compatibility between the shell and the core, high in repair temperature, capable of self-emulsifying, high in solid content, low in emission of volatile organic compounds (VOC) and the like.

The present invention discloses a self-cross-linking type waterborne polyacrylate powder-free base slurry for a clothing fusible interlining. The self-cross-linking type waterborne polyacrylate powder-free base slurry is prepared from a waterborne polyacrylate emulsion, a waterborne acrylic acid thickener, an additive, deionized water and ammonia water, wherein the waterborne polyacrylate emulsion is prepared from a pre-emulsion, a seed emulsion, a secondary emulsion, a 10% adipic dihydrazide aqueous solution and ammonia water. According to the present invention, diacetone acrylamide (DAAM) is introduced into the system, and the adipic dihydrazide (ADH) modified branch chain is introduced, such that the cross-linking sites in the system can be increased so as to improve a self-cross-linking performance of the aqueous PA and form the medium temperature self-cross-linking type base slurry; and the baking temperature can be appropriately reduced by 10-30 DEG C so as to save energy sources.

The invention discloses a monomer containing a benzimide phenylacetylene structure. The monomer can enable self-crosslinking chemical reaction of a synthesized polymer under high temperature. The monomer containing a benzimide phenylacetylene structure and the structural units represented by I and II for synthesis of polyester can undergo random copolymerization to obtain high temperature self-crosslinked copolyester, and when the copolyester contains a PET structural unit, the characteristic viscosity number [eta] is 0.44-1.38dL / g, the vertical combustion UL-94 grade is from V-2 to V-0, the oxygen index LOI is 24.0-35.0%, and the cone calorimeter test peak heat release rate PHRR and the smoke release total amount are both lower than pure polyester. The invention also discloses a preparation method of the copolyester. The benzimide and phenylacetylene in the copolyester involved in the invention can generate synergistic cross-linking effect, so that the copolyester has very high flame-retardant and anti-dripping efficiency, and also the copolyester is endowed with excellent flame retardant, anti-dripping and smoke suppressing performance. The method provided by the invention is basically consistent with the synthesis method of conventional polyester, not only is mature in technology, and easy and convenient to operate, but also is easy to control and convenient for industrial production.

The invention discloses a method for preparing a clothing adhesive lining from self-crosslinking water-borne polyacrylate powderless base mud. The method comprises the following steps: at first, mixing water-borne polyacrylate emulsion, auxiliaries and deionized water, wherein the water-borne polyacrylate emulsion is prepared from pre-emulsion, seed emulsion, secondary emulsion, 10% adipic dihydrazide water solution and ammonia water, and the pre-emulsion is prepared from methyl methacrylate, butyl acrylate, acrylic acid, diacetone acrylamide, alkenamides sodium ethylenesulphonate, fatty alcohol-polyoxyethylene ether and deionized water; and then, adjusting the pH value of the system to be neutral with ammonia water, adding a water-borne acrylic thickener, and adjusting the viscosity to be less than 30,000. Soap-free emulsion prepared from lyophobic and hydrophilic monomers through a core-shell emulsion copolymerization technology is applied to the powderless base mud, so that the product has cleaner characteristics in preparation process and the product itself, meets green, environmental-friendly and healthy requirements, and conforms to the historical trend of the time.

The invention discloses inorganic reflective-insulation lotus leaf paint which is mainly prepared from the following raw materials: an inosilicate film forming matter, a composite reflective insulation material, rutile titanium dioxide, waterborne acrylic emulsion, an organosilicone adjuvant, a silane coupling agent, glycol, a dispersing agent, a wetting agent, a defoaming agent, a thickening agent, a buffering agent, a viscosity stabilizer and water, wherein the composite reflective insulation material is prepared from the following raw materials: thermal reflective insulation powder, kieselguhr, a compound aluminium silicate functional pigment, aedelforsite and mica powder. The inorganic reflective-insulation lotus leaf paint not only has an excellent thermal reflective insulation effect on building base materials, but also is capable of reducing indoor temperature to 20-25 DEG C in summer by virtue of optimization on the composite reflective insulation material; the reflective insulation compound material contains no organic waste gases such as formaldehyde and no APEO, is health-care and environmental-friendly, achieves a lotus leaf effect and is antifouling. The invention also discloses a preparation method of the inorganic reflective-insulation lotus leaf paint.

The invention discloses a water-based imitation coating high-elasticity stiffening finishing agent and a preparation method, and relates to the technical field of textile fabric finishing. The finishing agent is prepared from the following raw materials in parts by weight: 50-60 parts of emulsion A, 100-120 parts of B, 5-10 parts of cationic blocked isocyanate crosslinking agent. A method for preparing a water-based imitation coating high-elasticity stiffening finishing agent. The epoxy-modified polyorganosiloxane emulsion A with high molar mass is cross-linked by amino polyether-modified polyorganosiloxane and polyethyl silicate. The reasonable compounding of the emulsion B prepared by the agent and the blocked isocyanate crosslinking agent, and the padding finishing of the fabric can significantly improve the elasticity and stiffness of the fabric, and achieve the effect of the coating process. The obtained finishing agent has good softness, good anti-wrinkle effect, excellent washing resistance, and is water-based and environmentally friendly, and can meet the export environmental protection requirements.

The invention relates to the technical field of coatings, and in particular relates to a PUA emulsion having super strong ability of covering matting powder and realizing high extinction and high permeability and a preparation method of the PUA emulsion. The PUA emulsion having super strong ability of covering the matting powder and realizing high extinction and high permeability includes a polyester diol, diisocyanate, a methacrylate monomer, a chain extender, dibutyltin dilaurate, an initiator, a buffer agent, an emulsifier, triethylamine, an ammonia aqueous solution and water. The PUA emulsion not only has high hardness, but also has better water and solvent resistance, and more important, the PUA emulsion has low costs and can bring higher economic benefits; the water-based polyurethane dispersion mainly plays the role of a high-efficiency dispersant and can efficiently disperse an inorganic matting agent, so that a paint film can still maintain high permeability under the condition of high extinction; and the preparation method of the PUA emulsion having super strong ability of covering the matting powder and realizing high extinction and high permeability has the characteristics of a simple process, low production costs, and suitability for large-scale production.