89 results about "Ethoxypropionic acid" patented technology

A photoresist stripper composition is made up of a mixture of an acetic acid ester, gamma-butyrolactone (GBL), and a non-acetate ester or a poly alkyl alcohol derivative. The acetic acid ester may be at least one of n-butyl acetate, amyl acetate, ethyl aceto-acetate, and isopropyl acetate. The non-acetate ester may be at least one of ethyl lactate (EL), ethyl-3-ethoxy propionate (EEP) and methyl-3-methoxy (MMP). The poly alkyl alcohol derivative may be at least one of propylene glycol monomethyl ester (PGME) and propylene glycol monomethyl ester acetate (PGMEA).

Disclosed herein is an aqueous coating material comprising (A) at least one polyurethane which is ionically stabilized, nonionically stabilized, or a combination thereof, and which is saturated, unsaturated, grafted with olefinically unsaturated compounds, or a combination thereof, (B) at least one wetting agent or dispersant; and (C) at least one organic solvent selected from the group consisting of dimethyl sulfoxide, sulfolane, 2-methyl-1-butanol, 3-methyl-1-butanol, 2-methyl-1-pentanol, hexyl glycol, 1,6-hexanediol, diethylene glycol, triethylene glycol, glycerol, solutions of trimethylolpropane, solutions of pentaerythritol, solutions of sorbitol, reactive polyether polyols with a number-average molecular weight of 110 to 6000 daltons and a hydroxyl number of 25 to 1000 mg KOH/g, propylene glycol monobutyl ether, dipropylene glycol dimethyl ether, glycerol ethoxylate, ethyl 3-ethoxypropionate, gamma-butyrolactone, N-(2-hydroxyethyl)piperidine, N-methylmorpholine, N-(2-hydroxyethyl)morpholine, N-acetylmorpholine, N-cyclohexylpyrrolidone, N-octyl-2-pyrrolidone, and a combination thereof. Also disclosed is a process for preparing the foregoing aqueous coating material.

The invention relates to a light shading resin composition for color filter, the characteristic of which is that it contains 80~90 wt% of solvent and solid content; relative to solid content, it contains 8~35 wt% of acrylic acid series photosensitive resin, 45~65 wt% of black pigment, silicon surfactant or fluorin surfactant and initiator for photopolymerization whose HLB value is below 8. The viscosity of the resin composition is between 1.0 and 10.0mPa.s; relative to all solvents, it contains 30~50 wt% of the first solvent having a acetoxyl group in molecule, 0~25 wt% of propylene-glycol diacetate as the second solvent, 30~50 wt% of the third solvent having structure of 3-ethoxy propionic acid in molecule, 10~30 wt% of alicyclic compound having a carbonyl as the fourth solvent. Consequently, it has excellent evenness when coating, dryness of coating substrate and solid components' solubility.

The invention discloses paint for projection and a preparation method of the paint. The paint comprises the following components in parts by mass: 20-30 parts of crylic acid, 30-40 parts of resin, 1-2 parts of microcrystalline cellulose, 3-5 parts of cellulose ether, 1-2 parts of borosilicate, 0.3-0.8 part of nano-powder, 2-4 parts of titanium dioxide, 2-4 parts of aromatic polyimide fiber, 1-2 parts of alkyl cyclohexyl bromobenzene, 1-3 parts of 4-n-pentyl-4'-cyanobiphenyl, 0.2-0.3 part of a defoaming agent, 2-4 parts of a dispersing agent, 0.2-0.4 part of a flatting agent, 0.2-0.5 part of N,N-dimethylethanolamine and 10-15 parts of 3-ethoxypropionic acid ethyl ester. The paint for projection and the preparation method of the paint, provided by the invention, have the benefits as follows: the reflecting property of a wall body during projection can be improved by the paint, the viewing angle balance is improved, the gain is increased, the projection effect is further improved, and the pain is environment-friendly, wear-resistant, flame-retardant and has a better stability.

This invention is for a composition of clear or pigmented coating that is temporary and removable. It is especially designed to protect the surface of an automobile from the damaging effects of the environment and also from damage caused by normal daily use. The coating is a composition of 40 to 80% of cellulose acetate butyrate ester, 15 to 60% of an acrylic polymer and 2 to 10% of a sucrose acetate isobutyrate. The remover is a combination of tetrahydrofurfuryl alcohol, dibasic ester, diacetone alcohol, ethyl 3 ethoxypropionate; 2,2,4 trimethyl-1,3 pentanoldiol monoisobutyrate, and white mineral oil.

The invention discloses a recycling and purifying treatment method of sodium ethoxypropionate-containing wastewater. The method comprises: carrying out acidification salting-out on sodium ethoxypropionate wastewater, and carrying out phase separation to obtain an oil phase and a first salt-containing water phase; esterifying the oil phase to produce an esterification reaction solution containing EEP and water, carrying out phase separation to obtain a second salt-containing water phase and crude EPP, mixing the second salt-containing water phase with the sodium ethoxypropionate-containing wastewater, and carrying out acidification salting-out; and evaporating the first salt-containing water phase to make water steam containing organic matters enter a fixed bed reactor and undergo an adiabatic catalytic oxidation reaction, condensing obtained oxidized mixed gas, discharging obtained condensate, and directly discharging obtained non-condensable gas to air. The invention realizes the recycling of the sodium ethoxypropionate in the EEP production wastewater and realizes the purifying treatment of the wastewater.

The embodiment of the invention discloses a preparation method of ethyl 3-ethoxypropionate, and relates to the technical field of chemical industry synthesis. According to the scheme, low-acidity absolute ethyl alcohol and ethyl acrylate are subjected to an addition reaction under the catalytic action of a strongly basic ion exchange resin to prepare ethyl 3-ethoxypropionate, wherein the acidity of the reactant is within 10ppm and cannot affect the catalyst, so that the conversion rate of the catalyst is high so as to achieve high yield (the conversion rate and the yield of the scheme are morethan 98%). According to the invention, the method has the advantages of simplicity, mild conditions, few side reactions and easy regeneration of the catalyst; and the product easily achieves the purity of more than 99.8%, can be further processed into an electronic grade, can be used in photoelectric industry, greatly simplifies the separation process, and is convenient for continuous production.