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 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.