69 results about "Cyclic alcohol" patented technology

A liquid composition comprising (a) 21 to 70 parts by weight of a solvent having no nitrogen atom and having a carbonyl or sulfonyl group in the molecule, (b) 30 to 78.9 parts by weight of at least one component selected from the group consisting of a non-cyclic alcohol, an alkylene glycol, a polyalkylene glycol, a triol, a glycol monoacetate and a glycol monoalkyl ether, (c) 0.001 to 30 parts by weight of a physiologically active ingredient, and (d) 0.001 to 49 parts by weight of water.

The present invention provides a process for efficiently producing an optically active α-amino acid and an optically active α-amino acid amide. After contacting with cells or processed cells thereof having an ability to asymmetrically hydrolyse, a water solvent is substituted with at least one solvent selected from the group consisting of linear, branched, or cyclic alcohol having 3 or more carbon atoms and the optically active α-amino acid is preferentially precipitated from the alcohol solution.The addition of basic compounds, particularly potassium compounds to the alcohol solution containing the optically active α-amino acid amide, which is obtained after the separation of the optically active α-amino acid, enables the purification of the amide without the inclusion of amino acid into amino acid amide. Thus, the amide is subjected to the step of racemization and then recycled.

An organic solderability preservative (OSP) composition comprising an alkyl cyclic alcohol and an azole compound having enhanced composition stability against crystallization of the azole compound.

The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed of a copolymer obtained through copolymerization, preferably free-radical copolymerization, of vinylcaprolactam and / or vinylpyrrolidone, and one or more of the following monomers: a) an acrylic acid ester of a linear primary alcohol containing 2 to 10 carbon atoms in the alkyl group of the alcohol, b) an acrylic acid ester of a branched, non-cyclic alcohol having 4 to 12 carbon atoms in the alkyl group of the alcohol, c) acrylic acid, one or more organofunctional silanes, a dye or a pigment based on a metal complex or a metal oxide, wherein the metal oxide is of a spinel-type. Such primer provide reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass, and ensures at the same time a good coloration of the primer, thereby producing an opaque primer layer.

Described herein is a class of non-homopolymers polymerized from at least: (A) 10-22 mole percent of at least one N-vinyl lactam, (B) 30-35 mole percent of at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, (C) 40-52 mole percent of at least one (meth)acrylate of a straight- or branched-chain alkyl alcohol, and (D) 5-20 mole percent of at least one (meth)acrylate of a saturated or unsaturated cyclic alcohol having 6 to 20 carbon atoms. In one embodiment, the non-homopolymers exhibit solubility in the lower molecular weight alcohols. The non-homopolymers may be used in personal care or performance chemicals compositions. In one embodiment, the polymers are used in various personal care formulations, such as used for skin, sun, hair, and preservatives.

The invention discloses a photoresist reworking liquid composition for a CF process, and belongs to the field of wet electronic chemicals. The composition comprises the following components in percentage by weight: 0.5 to 40 percent of an inorganic alkaline substance, 0.5 to 45 percent of organic amine, 0.1 to 50 percent of a protic polar organic solvent, 0.1 to 50 percent of an aprotic polar organic solvent, 0.1 to 30 percent of a cyclic alcohol compound, 0.01 to 10 percent of a chemical formula A-Gemini type surfactant and the balance of water. The composition provided by the invention can be used for effectively removing bad photoresist on a glass substrate in the CF process, has the advantages of strong stripping performance, short stripping time, low operating temperature and the like, does not corrode substrate glass, has good dispersity on the photoresist, can reduce the blockage condition of a filter element to the greatest extent, and is small in volatility, low in foam, easyto rinse and free of environmental pollution.

Rubbery polymers made by anionic polymerization can be coupled with tin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as tire treads. In cases where the rubbery polymer was synthesized utilizing a polar modifier it is difficult to attain a high level of coupling. This invention is based upon the unexpected finding that coupling efficiency can be significantly improved by conducting the coupling reaction in the presence of a lithium salt of a saturated aliphatic alcohol, such as lithium t-amylate. This invention discloses a process for coupling a living rubbery polymer that comprises reacting the living rubbery polymer with coupling agent selected from the group consisting of tin halides and silicon halides in the presence of a lithium salt of a saturated aliphatic alcohol. The lithium salt of the saturated aliphatic alcohol can be added immediately prior to the coupling reaction or it can be present throughout the polymerization and coupling process. Lithium t-amylate reacts with water to form t-amyl alcohol during steam stripping. Since t-amyl alcohol forms an azeotrope with hexane, it co-distills with hexane and can contaminate recycle feed streams. This problem of recycle stream contamination can be solved by using metal salts of cyclic alcohols that do not co-distill with hexane or form compounds during steam stripping which co-distill with hexane. Thus, the use of metal salts of cyclic alcohols is preferred for this reason and because they are considered to be environmentally safe.

The present disclosure relates to a photoresist stripper composition for manufacturing an LCD, and relates to an integrated photoresist stripper composition capable of being used in all processes for manufacturing a TFT-LCD. More specifically, the present disclosure relates to an aqueous photoresist stripper composition capable of being used in all of transition metal, potential metal and oxide semiconductor wires. The aqueous photoresist stripper composition includes (a) a potential metal and metal oxide corrosion inhibitor, (b) a transition metal corrosion inhibitor, (c) a primary alkanolamine, (d) a cyclic alcohol, (e) water, (f) an aprotic polar organic solvent, and (g) a protic polar organic solvent, and has an excellent ability to remove a degenerated photoresist produced after progressing a hard baked process, an implant process and a dry etch process in a semiconductor or flat display panel process, may be used in aluminum that is a potential metal, copper or silver that is a transition metal, and metal oxide wires at the same time, and may be introduced to organic film and COA processes.

The present invention relates to a method for preparing an optically active cyclic alcohol compound represented by general formula [I]:[wherein R represents a hydrogen atom or a protecting group for amino group, and * represents an astymmetric carbon atom.]which comprises a step of subjecting a cyclic ketone compound represented by general formula [II]:[wherein R has the same meaning as defined above.]to asymmetric reduction (A) in the presence of an optically active oxazaborolidine compound and a boron hydride compound, or (B) in the presence of an asymmetric transition metal complex obtained from a transition metal compound and an asymmetric ligand and a hydrogen donor, and relates to said compound.

The invention discloses a preparation method and application of cycloastragenol. The preparation method of the cycloastragenol comprises the following steps: by using astragaloside or astrasieversianin as a raw material, oxidizing, reducing, hydrolyzing, extracting and purifying to obtain high-purity cycloastragenol. The method is simple to operate, gentle in condition, good in product quality and high in yield. The cycloastragenol can be applied to preparation of anticancer adjuvant therapeutic medicine. An anticancer adjuvane therapeutic medicine prepared by using the cycloastragenol as a pharmaceutical active ingredient has the anticancer adjuvant therapeutic effect of enhancing the anticancer therapeutic effect, reducing the toxicity of the anticancer medicine, preventing and treating the neutropenia caused by the anticancer medicine therapy.

The invention relates to a method for preparing cyclic alcohol through catalytic conversion of lignin depolymerized bio-oil. The method comprises the following steps: putting the lignin depolymerized bio-oil, a hydrogen-donor solvent and a cheap metal catalyst into a reactor; washing with inert gas, pressurizing, sealing the reactor, heating to a specified temperature, and carrying out heat preservation reaction; and after the reaction is completed, rapidly cooling the reactor to stop the reaction, filtering a liquid-phase product, and removing the hydrogen-donor solvent to obtain the cyclic alcohol. The adopted catalyst has the functions of catalyzing alcohol reforming hydrogen supply and selective hydrogenation of the lignin depolymerized bio-oil, the acidity is moderate, cyclic alcohol is prevented from being generated by excessive deoxidation of the cyclic alcohol while the aromatic ring structure of the lignin depolymerized bio-oil is efficiently hydrogenated and saturated and methoxyl is removed to prepare the cyclic alcohol, and the yield of the cyclic alcohol is increased. The method realizes high-selectivity catalytic conversion of lignin depolymerized bio-oil to prepare cyclic alcohol, and has the advantages of high product yield, strong selectivity, good quality and the like.

The present invention includes a method for preparing cyclic alcohols. The method includes a reduction, deprotection, and rearrangement scheme. The present invention further provides a method of preparation of an intermediate useful in the synthesis of compounds that function as inhibitors of the aspartyl protease enzyme of human immunodeficiency virus (HIV).

The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed ofa copolymer obtained through copolymerization, preferably free-radical copolymerization, of vinylcaprolactam and / or vinylpyrrolidone, and one or more of the following monomers:a) an acrylic acid ester of a linear primary alcohol containing 2 to 10 carbon atoms in the alkyl group of the alcohol,b) an acrylic acid ester of a branched, non-cyclic alcohol having 4 to 12 carbon atoms in the alkyl group of the alcohol,c) acrylic acid,one or more organofunctional silanes.Such primer provides reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass. The adhesion-promoting effect is retained even when the primer additionally contains functional fillers.