8 results about "Acetoacetic acid" patented technology

This invention belongs to the field of photocurable materials, specifically relating to a UV-curable material with shape memory and self-healing functions and its manufacturing method. The process involves reacting starch, succinic anhydride, acetic anhydride, and methanesulfonic acid in glacial acetic acid to form acetate starch; reacting epoxidized soybean oil, methanol, and tetrafluoroboric acid to form soybean oil-based polyol; reacting this polyol with tert-butyl acetoacetate to form acetylated soybean oil; reacting this prepolymer with polytetrahydrofuran, diisocyanate, and isobornyl acrylate to form an acetylated soybean oil-based polyurethane photosensitive prepolymer; and finally reacting this prepolymer with acetate starch, a diluent, and a photoinitiator to form a UV-curable material with shape memory and self-healing functions. This invention features high reactivity, mild reaction conditions, high atom utilization, and the material exhibits excellent mechanical, thermal, shape memory, and self-healing properties. It is suitable for applications in adhesives, flexible electronic packaging, and advanced manufacturing.

The application discloses a skin-feeling acrylic finish emulsion and a preparation method and application thereof. The emulsion is prepared by emulsion polymerization of the following monomer components in a weight ratio: a) 15-70% of ester monomers, b) 1.3-10% of acetoacetoxy-containing olefinically unsaturated monomers, c) 0.5-5% of unsaturated hydrophilic monomers, d) 0.2-5% of reactive silane coupling agents, e) 10-50% of styrene, and f) 14-25% of (4-vinylphenyl)dimethylsilane. The acrylic finish emulsion provided by the application is applied to building interior wall coatings, has a smooth skin feeling, has good anti-graffiti performance, and has synergistically improved water resistance and scrub resistance.

The present invention relates to a process for coloring keratin fibers comprising: - at least one application step P on said keratin fibers of a composition comprising at least one protease-type enzyme, then - the application on said keratin fibers, in one or more steps, of the following ingredients, included in one or more separate compositions: i) at least one compound with particular acetoacetate functions, ii) at least one coloring agent selected from pigments, direct dyes, and mixtures thereof; and iii) at least one (poly)amine compound.

This invention discloses an early water-resistant emulsion, comprising the following monomer components in the following weight ratios prepared by emulsion polymerization: a) 15-70%, preferably 44-66%, of ester monomers; b) 1.3-10%, preferably 2-4%, of olefinic unsaturated monomers containing acetoacetic acid groups; c) 0.5-5%, preferably 1-5%, of unsaturated monomers containing hydrophilic groups; d) 0.2-5%, preferably 0.5-2%, of reactive silane coupling agents; e) 10-50%, preferably 20-30%, of styrene; f) 14-25%, preferably 14-15%, of phosphorus-containing monomers. In exterior wall coating formulations, this emulsion provides strong early water resistance while also offering high stain resistance and high gloss.

The application discloses a preparation method of a phenylacetyl acetic acid compound, relates to the technical field of chemical synthesis, and the synthesis route of the phenylacetyl acetyl acid compound is as follows: an aniline compound connected with five groups of R1, R2, R3, R4 and R5 is used as a raw material, a diazotization reagent is added under acidic conditions to perform a diazotization reaction, a phase transfer catalyst, a copper catalyst and divinyl ketone are added to perform a reaction, and hydrolysis is performed under acidic conditions to obtain the phenylacetyl acetic acid compound; wherein R1, R2, R3, R4 and R5 are each independently selected from F, Cl, Br, -CH3, -OCH3, NO2, -C2H5, -C3H7, -CF3 or H, and are not H at the same time; when one or more of R1, R2, R3, R4 and R5 is F, the rest are not all H; and X is selected from Cl or Br. The raw material prepared by the application is easy to obtain, the operation is simple, the reaction condition is mild, the danger is low, the reaction step is short, the production cost and three waste emissions of enterprises are reduced, and large-scale industrial production can be easily realized.

This invention belongs to the field of water-based coating technology and relates to a water-based sealing coating for passenger vehicles with anti-flash rust function. By weight, it comprises 10-20 parts Fischer-Tropsch wax, 15-20 parts sulfonated lanolin cerium / lanthanum salt, 30-70 parts water, 1-4 parts dimethyl ethanolamine phenanthreneate, 2 parts dihydrazide terephthalate, and 1-5 parts isomeric tridecyl alcohol polyoxyethylene ether TO-8 modified with ethyl acetoacetate methacrylate. It primarily addresses the problem of flash rust on the inner walls of car door cavities and other body seams when using water-based products, and solves the corrosion problem caused by long-term inward evaporation of moisture from door cavities and seams when applying thick coatings. This invention uses dimethyl ethanolamine phenanthreneate at a moderate vapor pressure to ensure emulsification properties while its vapor-phase corrosion inhibition function prevents flash rust. Furthermore, as moisture and amine gradually evaporate, the self-crosslinking of the ketone carbonyl-hydrazide groups gradually decreases the HLB value of the system, giving the coating good water resistance in the early stages of drying, achieving a perfect water-based alternative.

The application discloses a high-solid low-surface-energy template paint for an aluminum alloy template, a preparation method of the template paint and an aluminum alloy template with a coating on a surface, and belongs to the technical field of template paints. The template paint mainly comprises the following components in percentage by mass: a hydrogen donor 40-60%, a hydrogen acceptor 20-40%, a latent catalyst 0.5-2%, modified silicon oil 0.5-5%, a solvent 10-15%, wherein the hydrogen donor is prepared by ring-opening reaction of liquid epoxy resin with amino alcohol and then ester exchange reaction with acetoacetic acid ester; and the hydrogen acceptor is composed of one or more of 1,6-hexanediol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate and diphenylmethane bismaleimide. The coating formed on the surface of the aluminum alloy template by the high-solid low-surface-energy template paint for the aluminum alloy template has the characteristics of excellent adhesion, good concrete demolding property, high impact resistance and excellent alkali resistance, and can be demolded for multiple times.