89 results about "Ethoxypropionic acid" patented technology

A thinner composition is effective in removing a variety of photoresists, and includes propylene glycol mono-methyl ether acetate, ethyl 3-ethoxy propionate and at least one of gamma-butyro lactone and propylene glycol mono-methyl ether. The thinner composition can selectively strip a photoresist coated on a backside and at an edge portion of a substrate, as well as a photoresist coated on a whole front surface of the substrate.

A conductive coating composition and a method for producing coating layer using the same are disclosed. The conductive coating composition is capable of forming an antistatic coating layer on the protective film surface of display device. The conductive coating composition includes: 1 to 30 wt % of polyethylene dioxythiophene aqueous-dispersed solution; 5 to 15 wt % of water-soluble binder resin; 0.2 to 10 wt % of melamine resin; 6 to 40 wt % of alcohol solvent; 5 to 30 wt % of organic solvent selected from the group consisting of dimethyl sulfoxide, propyleneglycol methylether, N-methylpyrrolidone, ethyl-3-ethoxypropionate, propyleneglycol monomethyletheracetate, butylcarbitol and the mixtures thereof; and 10 to 50 wt % of water. The method for producing the conductive coating layer includes the steps of coating the conductive coating composition on a substrate; and drying the coating composition.

Precipitation of polyacetylenic agents can be effected with control of a particle size parameter such as mean size or spread, by mixing a warm solution of the acetylenic agent with a cold precipitation fluid and appropriate selection of a constituent of the cold precipitation fluid and / or of the temperature conditions and collecting the precipitated acetylenic agent. Precipitation additives such as nitrocellulose or gelatin can usefully be employed. Solvents such as aqueous methanol and ethyl 3-ethoxypropionate can be useful. Polyacetylenic agents, e.g. substituted diacetylenics are useful to provide visual changes in condition-monitoring indicators such as time-temperature indicators, ''TTIs'', useful as freshness indicators for radiation exposure monitoring and for other purposes. Controlled, small and / or consistent particle sizes of such polyacetylenic agents are helpful in providing consistent commercial properties, especially in inks in which they may be formulated.

The subject matter of the present invention is an improvement in the continuous production of methyl (meth)acrylate or of ethyl (meth)acrylate by direct esterification of (meth)acrylic acid with methanol or ethanol, under reaction conditions for which the acid is in excess relative to the alcohol, in particular with an acid / alcohol molar ratio of between 1.0 and 4, and under a pressure ranging from atmospheric pressure to 5 bar. The process of the invention makes it possible to minimize the formation of ethyl ethoxypropionate during the esterification reaction, and results in an improvement in the material balance, simplification of the purification train for the desired ester, and optimization of the energy balance.

The invention belongs to the technical field of chemical synthesis, and in particular relates to a method for preparing 3-ethoxy ethyl propionate. The method comprises a synthesizing step and a refining step, wherein the synthesizing step adopts ethanol and ethyl acrylate as raw materials to carry out addition under the action of a catalyst, and the catalyst adopts alkali metal or alkali alcoholate. The method has the following advantages: 1, the method adopts one of the raw materials as solvent to react, so as to reduce solvent recovery and consumption in the production process; 2, the reaction catalyst uses basic catalyst such as sodium metal and the like, so as to improve reaction yield greatly; 3, the dosage of the reaction catalyst is reduced to about 2 percent, so as to lower amountof salt greatly after the reaction is finished, and reduce byproducts; 4, the reaction time can be shortened to 3 hours, so as to improve production efficiency; and 5, fore zeolite obtained in distillation can be used for next reaction, so as to achieve circular application, so that the proposal reaches green chemical requirement.