107 results about "Crotonates" patented technology

This invention pertains to a method for flavoring an ingestible composition with a flavoring agent in organoleptically purified form, unaccompanied by substances of natural origin present in mango. The flavoring agent may be used in a wide variety of ingestible vehicles such as chewing gum compositions, hard and soft confections, dairy products, beverage products including juice drinks and juice products, green vegetable and chicken products, and the like. The present invention also pertains to an ingestible composition comprising an ingestible vehicle and an organoleptically effective amount of the purified flavoring agent. The present invention further pertains to ethyl 3-mercaptobutyrate represented by the formula, CH3(SH)CHCH2COOCH2CH3, in purified form, unaccompanied by substances of natural origin present in mango. The present invention still further pertains to a method to confer, enhance, improve, or modify the odor properties of a perfuming composition or a perfumed article, which comprises adding to the perfuming composition or perfumed article, ethyl 3-mercaptobutyrate represented by the formula, CH3(SH)CHCH2COOCH2CH3. The present invention still further pertains to a perfuming composition or a perfumed article containing as an active perfuming ingredient, ethyl 3-mercaptobutyrate represented by the formula, CH3(SH)CHCH2COOCH2CH3. The present invention also pertains to a method for preparing ethyl 3-mercaptobutyrate which comprises reacting ethyl crotonate with sodium hydrogen sulfide and sodium bicarbonate to form the disulfide dimer of ethyl 3-mercaptobutyrate followed by reducing the disulfide dimer to yield ethyl 3-mercaptobutyrate.

The compositions of the present invention relate to improved hair styling compositions in the form of microemulsions which are non-fluid and clear or transparent and which are comprising 20% to 60% by weight water; at least 3% by weight of an oil phase comprising liquid hydrophobic oils, at least 20% by weight of emulsifier; anionic hair fixing polymers and / or nonionic hair fixing polymers. Preferred polymers are anionic vinylacetate / crotonates copolymer and nonionic vinylpyrrolidone homopolymer.

The invention discloses a Cys fluorescence sensor based on rhodamine B, a preparing method and an application. The preparing method includes the steps that the rhodamine B serves as a precursor, and a target product 3'-hydroxyl-3-carbonyl-3H-spiro[isobenzofuran-1,9'-xanthene]-6'-yl(E)-4-((2-(3',6'-di(diethylamide-3-carbonyl-spiro[isoindolinyl-1,9'-xanthene])-2-yl)ethyl)amino)-4-carbonyl butanol-2-crotonate is synthesized with two steps. According to the Cys fluorescence sensor, the preparing method and the application, Cys is detected through the target product, and it is found that the target product has a quite good detection effect on Cys; meanwhile, the raw materials are easy to get, the synthesis steps are simple, postprocessing is also quite convenient, and large-scale production can be easily achieved.

The invention discloses a method for preparing optical pure 3-aminobutanol, which comprises the following steps: acetylacetic ester and chiral phenethylamine react to generate 3-(1'-benzylmethylamine)-2-crotonate enantiomer, namely 3-(1'-benzylmethylamine)-2-crotonate; potassium borohydride triacetate or sodium borohydride triacetate is used to reduce the 3-(1'-benzylmethylamine)-2-crotonate enantiomer into a 3-(1'-benzylmethylamine)-2-butyric ester enantiomer; then chiral pure 3-(1'-benzylmethylamine)-2-butyric ester is obtained through salification and resolution; and the 3-(1'-benzylmethylamine)-2-butyric ester is subject to reducing debenzylation by palladium-carbon to obtain the optical pure 3-aminobutanol. The method has low cost and high product purity, and is suitable for industrialized production.

The invention discloses a waterproof modified adhesive for furniture finishing. Raw materials of the adhesive comprise polyurethane, ethylene vinyl acetate, 2-vinyl crotonate, polyvinyl alcohol, potassium persulphate, ammonium persulfate, nanometer titanium dioxide, nanometer silica, nanometer zinc oxide, nanometer calcium carbonate, alumina silicate, kaolin, asbestos powder, a silane coupling agent KH-560, calcium stearate, polydimethylsiloxane, polymethylphenylsiloxane, tristearin, sodium dodecyl benzene sulfonate, N-methyl-2-pyrrolidone, a modified waterproof agent, a waterproof reinforcingfiller and deionized water. The invention also brings forward a preparation method of the above waterproof modified adhesive for furniture finishing. The prepared adhesive is used for furniture finishing and has excellent waterproofness and glueability.