650 results about "Aromatic acid" patented technology

Provided are methods of trimming a photoresist pattern. The methods comprise: (a) providing a semiconductor substrate; (b) forming a photoresist pattern on the substrate, wherein the photoresist pattern is formed from a chemically amplified photoresist composition comprising: a matrix polymer comprising an acid labile group; a photoacid generator; and a solvent; (c) coating a photoresist trimming composition on the substrate over the photoresist pattern, wherein the trimming composition comprises: a matrix polymer, an aromatic acid that is free of fluorine; and a solvent; (d) heating the coated substrate, thereby causing a change in polarity of the photoresist matrix polymer in a surface region of the photoresist pattern; and (e) contacting the photoresist pattern with a rinsing agent to remove the surface region of the photoresist pattern, thereby forming a trimmed photoresist pattern. The methods find particular applicability in the manufacture of semiconductor devices.

The invention relates to a lubricating grease, comprising 40-95 wt% of a lubricating base oil, 1-59 wt% of a composite zirconium based densifier and 1-59 wt% of hexapolyurea; and the composite zirconium based densifier is a compound zirconium soap generated from reaction of higher aliphatic acid, aromatic acid, water and zirconium alkoxide. The invention also relates to a preparation method of the lubricating grease. The method comprises the following steps: subjecting the zirconium alkoxide, higher aliphatic acid and aromatic acid to a first contact reaction in lubricating base oil at 60-120 DEG C; then subjecting the mixture obtained from the first contact reaction and water to a second contact reaction at 85-100 DEG C, and heating the products obtained from the second contact reaction for dehydration; and introducing the hexapolyurea into the obtained reaction products. The lubricating grease provided by the invention has high drop point, excellent colloidal stability, and excellent extreme pressure wear resistance and ball bearing lubrication life.

The invention relates to lubricating grease, comprising 40-95 wt% of lubricating base oil, 1-59 wt% of a compound zirconium-based thickening agent and 1-59 wt% of a tetrapolyurea, wherein the compound zirconium-based thickening agent is a compound zirconium sceps formed by reacting a higher aliphatic acid, an aromatic acid and water with zirconium alkoxide. The invention also relates to a preparation method of the lubricating grease. The method comprises the steps of performing a first contact reaction on the zirconium alkoxide, the higher aliphatic acid and the aromatic acid in the lubricating base oil at a temperature of 60-120 DEG C; then performing a second reaction on the obtained mixture from the first contact reaction with water at a temperature of 85-100 DEG C; and heating the obtained product from the second reaction for dehydration; and then introducing the tetrapolyurea in the obtained reaction product. The lubricating grease has relatively high boiling point, presents excellent colloid stability and has good extreme pressure antiwear property and ball bearing lubrication life.

The present invention provides a composition, comprising: greater than about 0.1% by weight hydrogen peroxide; an aromatic acid component; surfactant; optionally, a solvent; and a carrier. The composition of the invention is useful as a disinfecting composition for killing microorganisms such as bacterium (including Mycobacterium), spores and fungi. The composition provides a pathogenic bacteria kill rate of 99.9% in about 30 seconds when bacteria are exposed to the composition and is effective in providing a Mycobacterium kill of 10⁶ with two minutes or less. Moreover, the compositions of the invention are generally more resistant to catalase deactivation than, for example, an aqueous solution of hydrogen peroxide. The concentration of hydrogen peroxide within the composition may range from about 1% by weight to about 7% by weight and the concentration of aromatic acid component may range from about 0.1% by weight to about 5% by weight. The invention also provides a method for disinfection of a substrate utilizing the composition. The composition of the invention may be used in the foregoing method on a medical instrument, such as an endoscope or the like. Applying the compositions to a substrate may be accomplished in any of a variety of application methods such as by roll coating, dipping, spraying, or rotational tumbling. The composition may be applied to the substrate for a period of time ranging from about 30 seconds to about ten minutes. In this aspect, the invention can further comprise drying the substrate after removing the composition.

The invention relates to a lubricating grease, comprising 40-95 wt% of a lubricating base oil, 1-59 wt% of a composite zirconium based densifier and 1-59 wt% of octapolyurea; and the composite zirconium based densifier is a compound zirconium soap generated from reaction of higher aliphatic acid, aromatic acid, water and zirconium alkoxide. The invention also relates to a preparation method of the lubricating grease. The method comprises the following steps: subjecting the zirconium alkoxide, higher aliphatic acid and aromatic acid to a first contact reaction in lubricating base oil at 60-120 DEG C; then subjecting the mixture obtained from the first contact reaction and water to a second contact reaction at 85-100 DEG C, and heating the products obtained from the second contact reaction for dehydration; and introducing the octapolyurea into the obtained reaction products. The lubricating grease provided by the invention has high drop point, excellent colloidal stability, and excellent extreme pressure wear resistance and ball bearing lubrication life.

The invention discloses polyimide foam and a preparation method thereof. Aromatic dianhydride and/or aromatic acid ester, alcohol with low molecular, a catalyst and a surface active agent are mixed proportionally in a polar solvent and react so as to form foam precursor solution. The foam precursor solution and isocyanate react in a mould and freely foam into a foam intermediate. The intermediate is solidified by microwave radiation or/and oven heating to obtain solid polyimide foam. The preparation process has short path, simple technology, good stability for storage of the foam precursor solution, adaptation to processing technologies of pouring, spray coating, extrusion, and the like, no occurrence of defects of cracked foam, foam combination, subsidence and incomplete amination, low preparation cost as well as uniform hold diameter and stable performance of the solid polyimide form, and is convenient for popularization and application.

The invention relates to a lead free soldering clean free soldering flux with the mass percentage of organic acid activating agent 1. 5-3. 5%, surface active agent 0. 04-0. 6%, organic amine and derivant 2. 0-5. 0%, with the rest being film forming matter. The said organic acid could be one or more of the aliphatic acid mono acid or bi-acid, aromatic acid, or amino acid. The said surface active agent is one or more of the nonion surface active agent, and the said organic amine and the derivant being ethanediamine, tetramethylenediamine, diethyl ethanolamine and so on, with the said film forming material being diethyl ethanolamine or resin. The soldering flux does not have halogen, being environmental protective, good in welding, welding spot being full and luminous, without residue, no corrosion, high in isolation resistance.

The invention discloses a hard polyimide foaming structural material and a preparation method thereof. The method comprises the following steps of: mixing aromatic dianhydride and/or aromatic acid ester, high molecular alcohol, low molecular alcohol, a catalyst and a surfactant according to a ratio into a polar solvent and reacting to form polyimide foam precursor solution; reacting the precursor solution with isocyanate in a die; pressurizing and foaming to form a polyimide foam intermediate; and performing microwave radiation or/and performing heat curing by using an oven to obtain the hard polyimide foaming structural material. The preparation process route is short and the process is simple; the storage stability of the foam precursor solution is high; and the prepared hard polyimide foaming structural material has uniform aperture, hard quality, high strength, low density and high temperature resistance, is non-toxic and environmentally-friendly in the foaming process and easy to industrialize, and can be applied in the fields of electron, carrier rockets, aviation, ships, railway locomotives and the like.

The invention relates to a lubricating grease, comprising 40-95 wt% of a lubricating base oil, 1-59 wt% of a composite zirconium based densifier and 1-59 wt% of bipolyurea; and the composite zirconium based densifier is a compound zirconium soap generated from reaction of higher aliphatic acid, aromatic acid, water and zirconium alkoxide. The invention also relates to a preparation method of the lubricating grease. The method comprises the following steps: subjecting the zirconium alkoxide, higher aliphatic acid and aromatic acid to a first contact reaction in lubricating base oil at 60-120 DEG C; then subjecting the mixture obtained from the first contact reaction and water to a second contact reaction at 85-100 DEG C, and heating the products obtained from the second contact reaction for dehydration; and introducing the bipolyurea into the obtained reaction products. The lubricating grease provided by the invention has high drop point, excellent colloidal stability, and excellent extreme pressure wear resistance and ball bearing lubrication life.

The invention relates to a gas conveying pipeline drag reducer used in gas and particularly natural gas conveying pipeline drag reduction and a preparation method thereof, relating to a macromolecular compound composition and the pipeline system technical field. The gas conveying pipeline drag reducer is characterized in that: the drag reducer consists of pyridine, secondary amine, formaldehyde or acetaldehyde, aromatic acid and deionized water; when total weight is counted as 100 percent, the compositions in percentage by weight are: 10 to 20 percent of the pyridine, 20.4 to 28.4 percent of the secondary amine, 7.6 to 8.4 percent of the formaldehyde or the acetaldehyde, 37 to 38.4 percent of the aromatic acid and 13 to 15 percent of the deionized water. The preparation method comprises the following steps that: the pyridine and the secondary amine in proportional quantities are added in a container and are mixed evenly; the formaldehyde or the acetaldehyde in proportional quantity is dripped to carry out reaction; the aromatic acid in proportional quantity is added, and the deionized water in proportional quantity is dripped so as to carry out reaction continuously; and finally, redundant water is removed, and a target product is obtained after purification. The gas conveying pipeline drag reducer has direct source of raw materials; moreover, the preparation method has simple process, convenient operation and moderate reaction conditions, and a product prepared by the method has excellent drag reduction effect.

Catheter injectable depot compositions are provided that include a bioerodible, biocompatible polymer, a solvent having miscibility in water of less than or equal to 7 wt. % at 25° C., in an amount effective to plasticize the polymer and form a gel therewith, a thixotropic agent, and a beneficial agent. The solvent comprises an aromatic alcohol, an ester of an aromatic acid, an aromatic ketone, or mixtures thereof. The compositions have substantially improved shear thinning behavior and reduced injection force, rendering the compositions readily implanted beneath a patient's body surface by injection.

The present invention provides a fuel oil additive capable of effectively improving the quality of fuel oils, which comprises an oil-soluble metal salt of organic acid having the general formula MR, where R is an organic acid radical and the corresponding organic acid is a C1-C40 saturated or unsaturated fatty acid, naphthenic acid, aromatic acid or alkylphenol, M is a metal cation and the corresponding metal is an alkali metal, alkali-earth metal, rare-earth metal, transition metal, or the like. The present invention also provides fuel oil products added to the fuel oil additive, including gasoline, diesel oil, kerosene, heavy oil, resid, or the like. The present invention especially provides a gasoline antiknock agent and a gasoline having excellent antiknock property, and this kind of gasoline antiknock agent is characteristic of effectiveness, economy, safety, no environmental pollution, no toxicity to human body, no adverse effect on parts of automobile engine, use convenience, and the like.

A liquid catalyst containing N-alkylpyrrolidone-yl Bronsted acid ions for esterifying reaction has high transform rate, selectivity and cyclic life (more than 20). Said esterifying process includes such steps as providing fatty acid or aromatic acid and straight- or branch-chain alcohol, mixing while adding said catalyst used also as solvent, stirring, heating, laying aside, gravitational depositing, and separating liquid to obtain the esterified product.

Floor finishes are stripped or deep scrubbed using a floor stripper/cleaner composition containing sparingly water-soluble floor finish solvent; water; sulfonic acid, sulfate acid, phosphonic acid, phosphate acid or aromatic acid coupler in an amount sufficient to provide a homogenous aqueous liquid phase and no or low foaming during shaking; and sufficient organic amine so that the composition pH is about 2 to about 11.

The present invention relates to a cosmetic composition comprising: a cosmetically acceptable medium, at least one starch and at least one ester selected from (1) liquid esters from a C3-C30 carboxylic acid and a C1-C30 alcohol, with at least one from the acid or the alcohol is branched or possesses at least one carbon-carbon double bond; and (2) esters from a C7-C30 aromatic acid having a carboxylic group that is directly linked to the aromatic ring, and a C1-C30 alcohol. The inventive composition is substantially free of soap. This composition has a “melting” texture and can be easily rinsed off. Hair treated with this composition has a soft feel with no residues. The inventive composition is preferably suitable for washing and/or conditioning keratinous materials, such as hair or skin.

Provided is a method for accelerating the biodegradation of aliphatic-aromatic co-polyesters comprising greater than 60 mol percent aromatic acid, based on total diacid in the co-polyester. The method involves contacting at least one hydrolytic enzyme in aqueous solution to the co-polyester.

A (meth)acrylate compound having an aromatic acid-labile group, the (meth)acrylate compound being represented by the following Formula 1:

In Formula 1, R₁ is hydrogen or methyl, R₂ is hydrogen, a substituted or unsubstituted alkyl, or a substituted or unsubstituted aryl, R₃ is hydrogen, a substituted or unsubstituted alkyl, or a substituted or unsubstituted aryl, AR is a substituted or unsubstituted phenyl, or a substituted or unsubstituted aryl having from two to four fused aromatic rings, and carbon C_AR is bonded directly to an aromatic ring of AR.

The ester hydrolyzing method includes hydrolyzing ester in water to produce C1-C10 fatty acid or aromatic acid and C1-C4 fatty alcohol under the presence of ammonium salt of heteropoly acid as catalyst. The ammonium salt of heteropoly acid is obtained through the reaction between heteropoly acid in Keggin structure and inorganic ammonium salt or organic amine, the heteropoly acid is selected from phosphotungstic acid, silicotungstic acid, silicomolybdic acid and phosphomolybdic acid; the inorganic ammonium salt is selected from ammonium carbonate, ammonium nitrate, ammonium sulfate, ammonium phosphate and diammonium hydrochloride; and the organic amine is selected from fatty amine, alicyclic amine and arylamine. The said ester hydrolyzing method can obtain high conversion rate in relatively lower water/ester ratio and relatively short time, and the catalyst is cheap and easy to separate from the product.

The invention discloses a modified light flexible polyimide foam material and a preparation method thereof. The modified light flexible polyimide foam material is obtained by the reaction of a hyper branched/linear polyamide acid prepolymer formed by aromatic diamine, aromatic triamine, aromatic dianhydride and/or aromatic ester, a catalyst, a surfactant, an additive and an isocyanate, and the curing of the product. The intermediate section of the molecular structure is a hyper branched/linear section formed by aromatic diamine, aromatic triamine, aromatic dianhydride and/or aromatic ester, and the side chain is a crosslinked or/and linear section formed by aromatic dianhydride and/or aromatic ester; the polyimide foam material of the invention has simple process, has a shrinkage of -50.75% to 23.67%, a density of 4.0 kg/m3-31.0 kg/m3, and a glass transition temperature of 230 DEG C-320 DEG C, is a flexible sound-absorbing and noise-reducing polymer foam material, and is applicable tothe fields of aviation and aerospace, ship, and electronic industries.

The present invention relates to chemical material. The material for producing hard polyurethane foam includes: polyol based on cane sugar 30-50 wt%, polyepoxy ethane/polyepoxy propane polyether polyol with molecular weight of 500-800 and based on sorbic alcohol 14-30 wt%, polyepoxy ethane/polyepoxy propane polyether polyol with molecualr weight of 100-300 and based on amines 0-10 wt%, linear polyepoxy ethane/polyepoxy propane polyether polyol with 500-1000 molecular weight 5-15 wt%, polyester polyol with 200-700 molecular weight and based on aromatic acid anhydride 0-10 wt%, other compound with 60-500 molecular weight and with at least one hydrogen atom capable of reacting with isocyanate 1-5 wt%, water 1-7 wt%, amine catalyst 0.5-5.0 wt% and optional supplementary material and/or additive 1-15 wt%.