89 results about "Acetoacetates" patented technology

The invention discloses a synthesis method of 2-bromomethyl-5-trifluoromethyl furan, which comprises the following steps: S1, carrying out reaction on acetoacetate and halogenated trifluoroacetone under the action of an alkaline substance and a catalyst to generate a 2-acetyl-5, 5, 5-trifluoro-4-oxovalerate crude product; s2, carrying out a cyclization reaction on the 2-acetyl-5, 5, 5-trifluoro-4-oxovalerate crude product, so as to obtain a 2-methyl-5-(trifluoromethyl) furan-3-formate crude product, and carrying out a cyclization reaction on the 2-acetyl-5, 5, 5-trifluoro-4-oxovalerate crude product to obtain a 2-methyl-5-(trifluoromethyl) furan-3-formate crude product; s3, adding an alkaline substance into the crude product, carrying out hydrolysis, and adding acid to adjust the pH value after the hydrolysis is completed, so as to obtain 2-methyl-5-(trifluoromethyl) furan-3-formic acid; s4, the 2-methyl-5-(trifluoromethyl) furan-3-formic acid is subjected to a heating decarboxylation reaction, and 2-methyl-5-(trifluoromethyl) furan is obtained; and S5, carrying out a bromination reaction on the 2-methyl-5-(trifluoromethyl) furan and a bromination reagent to obtain a final product 2-bromomethyl-5-(trifluoromethyl) furan. The raw materials used in the synthesis method are easy to obtain, use of control chemicals is not involved, and industrialization is easy to achieve.

Compositions for delivering ketone bodies to a subject include one or more beta-hydroxybutyrate salts, one or more acetoacetate salts, beta-hydroxybutyric acid, and optionally acetoacetic acid. The compositions may optionally include one or more ketone body esters, such as one or more beta-hydroxybutyrate esters and / or one or more acetoacetate esters. An example composition contains about 2% to about 98% on a molar basis of the one or more beta-hydroxybutyrate salts and the one or more acetoacetate salts, about 2% to about 98% on a molar basis of the beta-hydroxybutyrate free acid and optionally the acetoacetate free acid, and optionally about 2% to about 98% on a molar basis of one or more ketone body esters.

A resin composition contains a resin that includes a monomer unit derived from (A) an acetoacetic acid ester compound including two or more acetoacetic acid ester groups in a molecule and a monomer unit derived from (B) an amine compound including two or more primary amino groups in a molecule, and that has a three-dimensional crosslinked structure in which an acetoacetic acid ester group of the (A) acetoacetic acid ester compound and a primary amino group of the (B) amine compound are condensation bonded.

The invention discloses a cross-linked castor oil resin with remodelability, a preparation method thereof, and an application thereof, belonging to the technical field of polymer materials. First, acetoacetoxime castor oil is prepared, and then the acetoacetoxime castor oil is dissolved in an organic solvent. An isocyanate cross-linking agent and a catalyst are added, mixed evenly, and dried to obtain the cross-linked castor oil resin with remodelability. The acetoacetoxime carbamate formed in the structure after cross-linking is a new type of dynamic covalent bond with remodelability. The resin can be reshaped multiple times by hot pressing and maintains good mechanical properties, which is of great significance for promoting the sustainable development of polymer materials.

The present invention relates to a method for coloring keratin fibers comprising applying the following ingredients to said keratin fibers, in one or more separate compositions: i) at least one chitosan compound; ii) at least one acetoacetate compound of formula (I); iii) at least one coloring agent selected from pigments, direct dyes, and mixtures thereof. The invention also relates to a composition comprising at least one specific chitosan compound and at least one beneficial agent selected from coloring agents, acetoacetate compounds, and mixtures thereof.

Title: Process for treating keratinous materials using at least one polyester compound with acetoacetate functionalities. The present invention relates to a process for treating keratinous materials comprising applying to said keratinous materials, in one or more successive steps, at least: i) at least one polyester of formula (I) comprising at least two acetoacetate functionalities, as well as its optical, geometric, and / or solvate isomers, such as hydrates, or a composition containing it or them: (Z)–[OC(O)-C(Ra)(Rb)-C(O)-R4]u (I), formula (I) in which Z, u, R4, Ra, and Rb are as defined in the description, and ii) optionally, at least one crosslinking agent. Figure for the abstract: None

The invention provides a waterborne epoxy curing agent based on enamine bonds as well as a preparation method and application of the waterborne epoxy curing agent, and belongs to the technical field of coatings. The waterborne epoxy curing agent based on the enamine bond is prepared from the following raw materials in parts by weight: 12 to 14 parts of a polyepoxy compound, 7 to 12 parts of a polyamine compound, 37 to 42 parts of a polyether-based polyacetoacetate compound, 9 to 14 parts of a diacetoacetate compound, 5 to 7 parts of a monoacetoacetate compound and 20 to 50 parts of a solvent. According to the waterborne epoxy curing agent constructed through enamine bonds, the free amine content of the obtained waterborne epoxy curing agent can be effectively reduced, and the activation period of the waterborne epoxy curing agent during use is prolonged.

The invention discloses a rectification method and a rectification system for acetoacetic esters, and belongs to the technical field of chemical engineering. According to the method disclosed by the invention, a method of firstly removing high boilers and then removing low boilers is adopted, firstly, the high boilers in the crude ester are quickly removed at the initial stage of rectification, most high polymers such as tar are removed, side reactions caused by high polymer impurities in the subsequent rectification process are avoided, and then the low boilers are removed through rectification to obtain a finished product. According to the rectification mode, the residence time of the high-boiling residues is short, the treatment efficiency is higher, the yield and the purity of the acetoacetate crude ester prepared by taking the crude diketene as the raw material can be guaranteed or improved, the energy consumption is lower, the equipment is simpler, the occupied area is smaller, the investment is lower, and the method has the advantages that the materials are recycled, the energy consumption is saved and the production is safe; the method is suitable for industrial application.

The invention relates to a blocked polyurethane composition based on at least one diisocyanate and / or polyisocyanate, at least one polyol, at least one hydroxyl chain extender and at least one end-capping agent, the at least one end-capping agent being selected from malonates, acetoacetates and acetylacetonates, and the at least one polyol is selected from the group consisting of polyester polyols, polycarbonate glycols, and polycaprolactone glycols; a use of the composition; the invention discloses a preparation method of an artificial leather surface layer and the artificial leather surface layer.

Process for making up keratin materials comprising at least the application to said keratin materials of at least two distinct compositions (A) and (B): - said composition (A) comprising i) at least one compound of formula (I) comprising at least two acetoacetate functions; and ii) at least one monoalcohol comprising from 2 to 4 carbon atoms; iii) water; and iv) at least one particulate colorant; and said composition (B) comprising at least v) a crosslinking agent chosen from (poly)amine compounds, notably aminoalkylpolyalkoxysilanes, α,ω-diaminooxaalkanes, chitosans, polyetheramines, polydimethylsiloxanes comprising primary amine groups at the chain end or on side chains

The present invention relates to the field of organic dyes, and particularly to an azo disperse dye and a preparation method thereof. The method includes: 1. After the initial reaction of cyanoacetate and organic amine, continue to react with acetoacetate to prepare a pyridone compound; 2. Add an aromatic amine compound to an acid solution and carry out a diazotization reaction with a diazotizing reagent to obtain an aromatic amine diazonium salt solution; 3. Add the pyridone compound to the aromatic amine diazonium salt solution for a coupling reaction to obtain the product. The molecular structure of the azo disperse dye of the present invention has an alkyl chain segment with a "lipophilic-hydrophilic" structure, which is similar to the chain segment structure of polyester fiber and has high affinity, so it has good dyeing performance on fiber materials. At the same time, this alkyl chain segment can make the dye have good dispersibility in water, has the ability to wash off the floating color on the fiber surface, and has excellent wet treatment fastness performance on fiber materials.

This application relates to the field of ceramic precursor materials technology, and discloses a high-ceramic-yield liquid zirconium carbide precursor and its preparation method. The high-ceramic-yield liquid zirconium carbide precursor is made from raw materials comprising the following parts by weight: zirconium n-butoxide: 100 parts; allyl acetoacetate: 74-82 parts; deionized water: 2.3-3.8 parts; furfuryl alcohol-maleic anhydride adduct modifier: 48-60 parts; wherein the furfuryl alcohol-maleic anhydride adduct modifier is the Diels-Alder reaction product of furfuryl alcohol and maleic anhydride. This invention introduces a Diels-Alder adduct of furfuryl alcohol and maleic anhydride to construct a thermally latent system. At room temperature, the adduct maintains a cyclic inert structure, giving the precursor low viscosity and long-term storage stability. At high temperatures, crosslinking is achieved by releasing active monomers through a reverse Diels-Alder reaction.

A method for treating keratin fibers using at least one acetoacetate oil. The present invention relates to a method for treating keratin fibers, particularly for conditioning, styling, and / or coloring keratin fibers, preferably hair, comprising applying to the keratin fibers, in one or more successive steps, at least i) one or more compounds of formula (I), as well as its optical, geometric, and / or solvate isomers, such as hydrates, or a composition containing them: (I) formula (I) in which Z, AK1, AK2, Y, R4, Ra, Rb, p, m, n, t, q, and u are as defined in the description, and optionally ii) at least one crosslinking agent. Figure for the abstract: None

An object of the present invention is to provide a resin composition that has excellent impregnability into fibers, enables favorable continuous production of a prepreg, and enables production of a prepreg that enables favorable production of a molded article.SOLUTION: A three dimensional crosslinked structure in which a compound (A) having two or more acetoacetic acid ester groups, aldehyde groups, or triketone structures alone or in combination in a molecule and an amine compound (B) having two or more primary amino groups in a molecule are bonded to each other, and a ketimine compound (D) in which at least one primary amino group of the amine compound (B) and a ketone group of the ketone compound (C) are condensation-bonded, wherein among the primary amino groups of the amine compound (B) constituting the ketimine compound (D), a proportion of the primary amino groups bonded to the ketone compound (C) is 1kPa% or more, the ketone compound (C) having a steam pressure at 20 °C of 0. 50mol or more.SELECTED DRAWING: None

The present invention relates to a foamable composition based on multifunctional acetoacetate compound, and to its use in structural foam applications. In particular, the present invention relates to a foamable composition based on a multifunctional acetoacetate compound, a polyether polyamine, a monofunctional primary amine and a chemical blowing agent.

The present invention relates to a nonionic aldehyde-functional polymer having end groups of formula (I) and an average aldehyde group content of 0.15 to 1.2 milliequivalents / g. This polymer is suitable for crosslinking, at ambient temperature, more specifically compounds having highly reactive groups such as cyanoacetate groups, acetoacetate groups or malonate groups. It enables elastic products having particularly long processing times with rapid curing and particularly high tensile strength and tear propagation resistance with high extensibility. It is therefore suitable as a component of adhesives, sealants or coatings that are particularly robust and durable, have low sensitivity to moisture and blistering, have particularly good processability and contain little or no toxic raw materials.

Title: Process for Makeup of Keratinous Materials Comprising the Application of at Least One Acetoacetate Polysaccharide Compound and a Crosslinking Agent. The present invention relates to a process for makeup of keratinous materials comprising at least the application to said keratinous materials of at least two distinct compositions (A) and (B), said composition (A) comprising at least one compound of formula (I) comprising at least two acetoacetate functional groups, at least one monoalcohol comprising 2 to 4 carbon atoms, and water, and said composition (B) comprising at least one amine crosslinking agent, with at least one of compositions (A) and (B) comprising at least one particulate coloring agent. Figure for the abstract: None

The present invention relates to a method for coloring keratin fibers employing a composition comprising at least one direct dye and / or an oxidation dye precursor and a composition comprising at least one compound with acetoacetate functions.

The present invention relates to a curable adhesive composition based on an acetoacetate compound and to its use in multi-purpose adhesive applications. In particular, the present invention relates to a curable adhesive composition based on a multifunctional acetoacetate compound and a polyoxyalkylene polyamine.

The application belongs to the field of polymer materials, and provides an environmentally-friendly polymer material with adjustable dynamic network and a preparation and closed-loop recycling method thereof, which comprises the following steps: carrying out a photopolymerization reaction of acetoacetic acid alkene and different functionality mercaptans in a solvent to obtain acetoacetic acid ester multimers with different functionality; carrying out a crosslinking reaction of the acetoacetic acid ester multimers and polyamine monomers in a solvent to obtain a prepolymer; curing the prepolymer to obtain a Vitrimer polymer film; and annealing, and the environmentally-friendly polymer material with adjustable dynamic network is obtained.The acetoacetic acid ester multimers with different branching conditions are prepared through ene click reaction, different network structures are given to the material, the network is adjusted, the dynamic and mechanical properties of the network are controlled, and the introduction of the vinyl amine ester bond into the polymer network provides a possibility for the closed-loop recycling upgrade of the polymer network.

The present invention relates to the use of a copolymer with acetoacetate functions or a composition comprising it to protect keratin fibers from humidity.

The invention discloses a hindered amine light stabilizer grafted modified polymer as well as a preparation method and application thereof. The modified polymer comprises a polymer main chain containing unsaturated carbon-carbon double bonds and a hindered amine light stabilizer structural unit grafted on the main chain. The two groups form chemical bond connection through a linking group containing a beta-ketone ester structure, one end of the linking group is connected with a main chain through a carbon-carbon bond, and the other end of the linking group is connected with a hindered amine unit through an ester bond. The preparation method comprises the following steps: firstly, carrying out ester exchange on hydroxyl-containing hindered amine and an acetoacetate compound to prepare a hindered amine intermediate; then, under the action of a basic catalyst, the intermediate and a polymer matrix are subjected to an addition or alkylation reaction to complete grafting. Polymerization of the light stabilizer is achieved through chemical bonding, the defects that traditional hindered amine is prone to migration and poor in extraction resistance are thoroughly overcome, the hindered amine retention rate after solvent extraction of the obtained weather-resistant polyolefin composition is larger than 70%, and the weather-resistant polyolefin composition has long-acting anti-aging performance. The method is simple in process, mild in reaction condition and wide in application range, and can be widely applied to the field of weather-resistant modification of polyolefin materials.

A method for the industrial production of teprenone and its application. The present invention belongs to the field of teprenone synthesis. The purpose of the present invention is to solve the technical problems of the existing teprenone synthesis method, which has a long route, many side reactions, and requires the use of special reagents. The method of the present invention comprises the following steps: first, farnesene is reacted with acetoacetate in the presence of a catalyst to obtain farnesene ketone ester, which is then decarboxylated to produce farnesene acetone, and then subjected to a reduction reaction, a halogenation reaction, and a Wittig reaction to obtain teprenone. The method avoids the shortcomings of existing processes, has fewer conversion steps in the synthesis route, and produces teprenone with high yield and purity, making it suitable for industrial production. The teprenone of the present invention is used as a drug for treating gastric diseases.

The present invention relates more particularly to the field of cosmetics for keratinous materials, in particular to the field of cosmetics for the care and / or makeup of the skin, and / or lips, and / or eyelashes, and / or eyebrows. The present invention is therefore directed to proposing a method for the use, in one or more steps, of i) at least one compound of formula (I) derived from the condensation of a poly(thio)ol with acetoacetate (ACAC), and ii) at least one crosslinking agent on keratinous materials. The present invention also relates to a composition comprising components i) and ii) and also to a kit comprising i) and ii).

A method for making up keratinous materials comprising the application of at least one acrylic copolymer with acetoacetate functions and a hydrophilic crosslinking agent. The present invention relates to a method for making up keratinous materials, comprising the application to said keratinous materials of at least one composition (A) comprising at least one copolymer with acetoacetate function(s) comprising repeating units derived from at least one monomer of formula (I) and at least one monomer selected from C1-C4 alkyl acrylates, C1-C4 alkyl methacrylates, at least one polyol; at least one C2-C4 alkyl acetate; at least one volatile oil, at least one C2-C4 monoalcohol; and a composition (B) comprising at least one hydrophilic crosslinking agent; an organic or mineral acid; and water; composition (A) and / or composition (B) comprising at least one particulate coloring matter.

A method for making up keratinous materials comprising the application of at least one acrylic copolymer with acetoacetate functions and a hydrophobic crosslinking agent. The present invention relates to a method for making up keratinous materials comprising the application to said keratinous materials of at least one composition (A) comprising at least one copolymer with acetoacetate function(s) comprising repeating units from at least one monomer of formula (I) and at least one monomer selected from C1-C4 alkyl acrylates, C1-C4 alkyl methacrylates; at least one polyol; at least one alkyl acetate comprising 2 to 4 carbon atoms; at least one volatile oil; at least one C2 to C4 monoalcohol; and an anhydrous composition (B) comprising at least one hydrophobic crosslinking agent, composition (A) and / or composition (B) comprising at least one particulate colouring material.

The present invention relates to a process for making up keratin materials comprising the application to said keratin materials of at least a composition (A) comprising at least, at least one copolymer bearing acetoacetate function(s) comprising repeat units derived from at least one monomer of formula (I) and from at least one monomer chosen from C1-C4 alkyl acrylates, C1-C4 alkyl methacrylates; at least one polyol; at least one alkyl acetate comprising from 2 to 4 carbon atoms; at least one volatile oil; at least one C2 to C4 monoalcohol; and a composition (B) comprising at least one crosslinking agent, optionally an organic or mineral acid; and optionally water, composition (A) and / or composition (B) comprising at least one particulate dyestuff.

The present invention is directed to a sealing layer that comprises a combination of polyurethane and poly(vinyl alcohol), the poly(vinyl alcohol) containing an acetoacetate functional group in its molecular structure. The sealing layer is formed from an aqueous sealing composition and shows water resistance and good barrier properties to non-polar fluids. The sealing layer can be used to seal microcells of electro-optic displays.

The present invention relates to the use of at least one compound containing acetoacetate functions, optionally combined with at least one (poly)amine compound or of a composition comprising same, for protecting keratin fibers from moisture.

Process for treating keratinous materials employing at least one polysaccharide compound with acetoacetate functional groups. The present invention relates to a process for treating keratinous materials, comprising applying to said keratinous materials, in one or more successive steps, at least i) one or more compounds of formula (I) as well as their optical and geometric isomers, their acid or base salts, and / or solvates, such as hydrates, or a composition containing them: (I) formula (I) in which X, R1, R2, Ra, Rb, and n are as defined in the description, optionally ii) at least one crosslinking agent, iii) optionally water. Figure for the abstract: None