274 results about "Monobasic acid" patented technology

The polymetal catalyst for reforming includes high temperature inorganic oxide carrier and the active components, including VIII metal in 0.01-2.0 wt% of the carrier, IVA metal in 0.01-5.0 wt% of the carrier, RE metal in 0.01-2.0 wt% of the carrier and halogen in 0.1-10.0 wt% of the carrier. The preparation process of the catalyst includes first introducing IVA metal and RE metal into the high temperature inorganic oxide carrier, the subsequent soaking of the carrier inside the soaking liquid comprising water soluble compound of VIII metal, monobasic acid and organic amine, and final drying and roasting of the soaked solid. The said preparation process can avoid the loss of RE metal in soaking VIII metal to raise the activity stability of the catalyst.

The invention relates to a method for coproducing high-purity methanoic acid and monobasic sodium phosphate by reaction of calcium formate and ultraphosphate. The method comprises the following steps that: carbon monoxide enters a reaction tower III; calcium hydroxide enters a reaction tower I to perform a counterflow reaction with carbon monoxide from a reaction tower II, a reaction solution overflows to the reaction tower II to perform the counterflow reaction with the carbon monoxide from the reaction tower III, the reaction solution enters the reaction tower III to perform the couterflow reaction with the carbon monoxide, the reaction solution overflows into a discharge tank from the reaction tower III to prepare a calcium formate preparation solution; the calcium formate preparation solution enters a reaction kettle, methanoic acid is dripped into the reaction kettle, sulfureted hydrogen is introduced into the reaction kettle, the mixture is separated and filtered through a filter I, a filtrate enters a continuous crystallizer, a crystalline liquid enters a filter II, and the filtered calcium formate is prepared into a finished product calcium formate through a drier; ultraphosphate, the methanoic acid and the calcium formate are conveyed into a horizontal double screw reactor to generate the methanoic acid and monobasic calcium phosphate; the methanoic acid and the monobasic calcium phosphate enter a methanoic acid distilling still for reduced pressure distillation; and the monobasic calcium phosphate is delivered to a monobasic calcium phosphate measurement receiving tank, while the monobasic acid enters a methanoic acid receiving tank. The method has high yield of the methanoic acid and low manufacturing cost.

The invention belongs to the technical field of unsaturated polyester resin, and particularly relates to a mono-acid blocked unsaturated polyester resin, formed by using dibasic alcohol, saturated dibasic acid, unsaturated dibasic acid, a monobasic acid blocking agent and a diluting agent as raw materials, and then performing condensation polymerization; and the raw materials comprise, in parts by weight, (1) 19-28 parts of dibasic alcohol, (2) 10-25 parts of saturated dibasic acid, (3) 15-27 parts of unsaturated dibasic acid, (4) 1-7 parts of monobasic acid blocking agent, and (5) 28-37 parts of diluting agent. The invention further provides a preparation method for the mono-acid blocked unsaturated polyester resin. The product obtained by the preparation method provided by the invention is better in compatibility, better in hydrolytic stability and higher in hardness compared with common unsaturated resin, as well as high in strength.

The invention discloses air-seasoning alkyd resin prepared from discarded edible oil. The alkyd resin comprises the following raw materials of 10-20 parts of discarded edible oil, 10-20 parts of dry vegetable oil, 6-12 parts of polyhydric alcohols, 0.01-0.02 part of catalyst, 10-15 parts of binary acid or anhydride, 2-8 parts of monoacid and 45-55 parts of diluent. Compared with the prior art, the air-seasoning alkyd resin has the advantages that the discarded edible oil with low price is adopted to replace part of dry vegetable oil or vegetable oil acids used in the traditional formula, the cost of per ton of the prepared air-seasoning alkyd resin can be reduced by about 800yuan, and the property of the air-seasoning alkyd resin is not lower than that of an existing product.

A photosensitive resin composition according to the invention includes (A) a photosensitive resin, (B) an epoxy resin, (C) a photopolymerization initiator, and (D) a polymerizable unsaturated compound and/or a solvent, which photosensitive resin (A) is obtained by allowing an epoxy resin (a) to react with a compound (b) having one primary alcoholic hydroxyl group and one functional group selected from a carboxyl group and a secondary amino group per molecule and an unsaturated monobasic acid (c) to yield a reaction product (I) and allowing a saturated or unsaturated polybasic acid anhydride (d) to react with the reaction product (I). The photosensitive resin composition of the invention is used as a solder resist in printed circuit boards, can be satisfactorily developed in a dilute basic aqueous solution and can yield a cured film that is excellent in flexibility, water resistance, adhesion, solder heat resistance, electroless gold plating resistance and pressure cooker test (PCT) resistance.

A resin composition which is excellent in photosensitively and developability, gives a cured article excellent in flexibility, soldering heat resistance, resistance to thermal deterioration, and resistance to electroless gold plating, and is suitable especially for use in forming solder resists and interlayer dielectrics. The resin composition is characterized by containing an oligomer (A) obtained by reacting the following ingredients (a) to (d): an epoxy resin having at least two epoxy groups per molecule, a compound having two hydroxy groups and one carboxy group per molecule, a carboxy group per molecule, a carboxylated rubbery polymer, and a monobasic acid having an unsatuated group.

The invention relates to a flexible unsaturated polyester resin and a preparation method and application thereof. The resin is prepared by mixing and reacting a dibasic acid or anhydride, a monobasic acid and dibastic alcohol and diluting the reaction product with a diluent and comprises the following components in percentage by weight: 17 to 24 percent of dibastic alcohol, 3 to 5 percent of monobasic acid, 39 to 53 percent of dibasic acid or anhydride and 26 to 35 percent of diluent, wherein the monobasic acid is oleinic acid; and the diluent is styrene and diallyl phthalate which accounts for 2 to 5 percent of the total weight of the diluent. The preparation method comprises the following steps: performing polycondensation reaction on the dibastic alcohol and the dibasic acid or anhydride for 8 to 12 hours at the temperature of about 200 DEG C, wherein the acid value is 40 to 50mgKOH/g, reducing the temperature, adding the oleinic acid, performing polycondensation reaction for 2 to 3 hours, after the reaction is completed, reducing the pressure and performing vacuum treatment until the acid value is 25 to 35mgKOH/g, adding an additive, cooling, and adding the diluent to obtain the flexible unsaturated polyester resin. The prepared flexible unsaturated polyester resin has high elongation at break and impact toughness and certain strength, and meets the requirements on physical properties of articles.

The invention discloses a preparation method of novel biological matrix non-soap type core-shell structure water-based acrylic acid emulsion. The preparation method comprises the following steps: 1) adding fatty acid, monobasic acid and polyol with natural source according to a certain proportion to prepare an alcohol acid intermediate; 2) adding a certain amount of polybasic acid and anhydride into the alcohol acid intermediate prepared in the step 1 according to a certain proportion and dissolving into water to prepare an alcohol acid aqueous solution; and 3) adding an acrylic acid comonomerin the alcohol acid aqueous solution in the step 2 at a time or in batches, adding an initiator, a reducing agent, a catalyst, a molecular weight regulator, reacting at 30 to 95 DEG C for 10 to 90 minutes, adding aids such as a crosslinking agent, a sterilizing agent, preservative, a stabilizer and a defoaming agent as required, and finally obtaining the novel biological matrix non-soap type core-shell structure water-based acrylic acid emulsion. The emulsion has the advantages of environmental friendliness, reproducible raw materials, low cost, high drying speed, wide and adjustable film-forming temperature and hardness and the like, and is favorable for application and popularization of biological matrix concept products.

The process of producing semi-finished paint self-dried alkyd resin with sewage ditch oil includes heating sewage ditch oil and monoacid in the pot to 70-90 deg.c and adding assistant, dewatering before heating to 140-160 deg.c slowly, adding maleic anhydride, heating to 240-260 deg.c in 1.5-3.0 hr to acidolyze sewage ditch oil, cooling to 180-200 deg.c and adding polyol, polybasic acid and reflux solvent, heating to and maintaining at 180-200 deg.c, heating to and maintaining at 240-250 deg.c to dewater, heating to 270-290 deg.c to polymerize to reach required acid number and viscosity, cooling and adding solvent to dilute, filtering at 100 deg.c and packing. The present invention is environment friendly.

The invention discloses an amide oligomer and a polyamide paste rheological aid prepared by swelling the same. A preparation method for the amide oligomer comprises the following steps of: putting aliphatic binary acid, aliphatic polyamine compound and aliphatic monobasic acid with a polar group and ester thereof into a reactor, adding a catalyst into the reactor, and reacting the mixture at the temperature of between 150 and 200 DEG C to obtain the amide oligomer. The polyamide has proper melting point and relative molecular weight; and after micro pulverization, the polyamide is dispersed into a mixed solvent containing aromatic hydrocarbon and alcohol and subjected to the controlled swelling at a lower temperature to form the polyamide paste rheological aid. The obtained polyamide paste rheological aid serving as an additive provides excellent coating performance for a coating system, namely has high viscosity during standing and good viscosity stability, prevents the powder in thesystem from settling and caking, has thinner viscosity during coasting and is easy for construction; the leveling property and the flowing resistance of a coated film are well balanced; and the polyamide paste rheological aid has broad application prospect in the coating industry.

The invention discloses a low-cost halogen-free chemical flame-retardant vinyl ester resin and a preparation method thereof and belongs to the technical field of flame-retardant vinyl ester resins. The low-cost halogen-free chemical flame-retardant vinyl ester resin is prepared by performing a series of reactions on bisphenol A epoxy, unsaturated monobasic acid 5-20, phosphoric acid, a catalyst, a polymerization inhibitor and a crosslinking monomer. The preparation method is simple, and three common problems of the conventional flame-retardant vinyl ester resin, namely poor brominated flame-retardant environment friendly effect, poor physical blending flame-retardant effect and stability and high cost in comparison with other flame-retardant methods, are solved. Moreover, the three wastes are avoided, the vinyl ester resin subjected to phosphoric acid ring opening modification has the performances of flame-retardant property, temperature resistance and corrosion resistance, and the product is high in stability, is an ideal substitute for a brominated flame-retardant chemical modification vinyl ester resin which is more than 30000 yuan per ton in the market and has the halogen-caused environment pollution problem, can be used for fiber reinforce plastic (FRP) products with anti-corrosion flame-retardant requirements as well as the engineering field, and also can be applied to the special fields of manufacturing of finished glass fiber reinforced plastic chimneys with flame-retardant high-temperature-resistant requirements.

This invention is to provide a kind of photothermosetting component, which was composed of a base resin (A), a photopolymerizable photomonomer or photooligomer (B), a photoinitiator (C), an epoxide compound containing at least two epoxy groups (D), and an organic solvent. A base resin (A) is composed of containing at least two epoxy groups of epoxide compound (a), containing at least two double bonds of unsaturated monobasic acid (b), a saturated or unsaturated dibasic acid (c), and a saturated or unsaturated acid anhydride (d) according to the typical ratio. This photothermosetting component was coating on the substrate, and then dried by baking, exposed by light, developed, irradiated by ultraviolet light or heated, and cured to form a solder mask.

A preparation method of dicarboxylic dihydric alcohol ester plasticizer includes the steps of conducting esterification reaction for 0.5-48 h with monobasic acid and dihydric alcohol as the raw materials under the catalysis effect at a temperature of 100-250 DEG C, and conducting reduced pressure distillation to obtain the dicarboxylic dihydric alcohol ester product. Dicarboxylic dihydric alcohol ester is non-toxic plasticizer and can replace phthalic acid ester to be used for the field of plastic industry, rubber industry and the like. The product prepared through the method is high in yield, easy to separate and friendly to the environment and has good application prospects.

The invention provides a method for preparing zirconium dioxide nano powder by low-temperature calcination of zirconium sol. The method comprises the following steps: dissolving a raw material water-soluble zirconium inorganic salt in deionized water; adding an alkaline precipitant to generate a suspension, and centrifuging or filtering to obtain precipitate; adding mixed liquid of monobasic acid or monobasic acid and hydrogen peroxide into the precipitate, and continuously stirring for peptization to obtain a clear zirconium sol precursor; and finally, drying and dehydrating the zirconium sol precursor and calcining and decomposing in different temperature intervals, wherein amorphous zirconium dioxide nano powder as well as zirconium dioxide nano powder of which tetragonal phase can be kept stable without doping can be obtained, and the average particle size of the powder can be controlled between 3nm and 10nm. The preparation method of high-performance zirconium dioxide nano powder has the following advantages: the powder has small particle size, narrow distribution and good dispersity; the adopted raw material reagent is easily available and cheap; and the equipment requirements and operation technology are simple, the energy consumption is low, pollution is avoided, and industrial production is easy to realize.