383 results about "Resin acid" patented technology

The invention provides a preparation method of cubic ultra-fine calcium carbonate particles. The method comprises the following steps: (1) adding a nucleation promoter to calcium hydroxide suspension liquid, wherein the nucleation promoter is selected from more than one of glucose, sucrose or sodium citrate; (2) carbonizing by introducing carbon dioxide until the pH value is 8-12, adding a crystal modifier and ageing for 0.5-10 hours, wherein the crystal modifier is selected from one of sodium chloride, sodium carbonate, sodium bicarbonate or sodium hydroxide; (3) further introducing carbon dioxide and carbonizing until the pH value is 6.5-7.0; (4) coating by adding a coating agent, filtering and drying to obtain a product, wherein the coating agent is selected from a resin acid, a resin acid alkali metal salt, a fatty acid or a fatty acid alkali metal salt. According to the calcium carbonate particles, the particle sizes are 90-180nm, the calcium carbonate particles are in a cubic shape, and the specific surface area is 10-18m<2>/g. Thus, the cubic ultra-fine calcium carbonate particles can be used as functional fillers in coating, rubber, plastic and sealant industries.

The invention relates to a method for preparing an ultra-thick polyimide film with high thermal conductivity and low thermal expansion coefficient. The process steps are: dissolving monomeric diamine in an aprotic polar solvent, adding The dianhydride and the surface-treated nano heat-conducting material are reacted for 4-10 hours to synthesize the polyamic acid resin containing the nano-heat conducting material. Wherein, the addition amount of the nano-thermal conductive material accounts for 1%-10% by mass of the synthetic polyamic acid resin; the preferred addition amount is 3%-8% by mass; Take it on the belt, dry it at 100-200°C, and dehydrate and imidize the obtained salivating film at a high temperature of 300-480°C to obtain an ultra-thick polyimide film with good thermal conductivity and low thermal expansion coefficient. The ultra-thick polyimide film prepared by the method of the invention has high thermal conductivity and low thermal expansion coefficient.

A resist composition contains (A) a resin having a structural unit represented by the formula (I), (B) an acid generator and (D) a compound represented by the formula (II),

wherein R¹, ring X¹, R³, R⁴, m, and n are defined in the specification.

The invention relates to a preparation method of cellulose-g-resin acid grafted copolymer. The preparation method of the cellulose-g-resin acid grafted copolymer comprises the steps that cellulose atom transfer radical polymerization (ATRP) macroinitiator is synthesized by reaction of cellulose and 2-Bromoisobutyryl bromide in a homogeneous solution system; resin acid monomer, cellulose ATRA macroinitiator, catalytic agents, ligand and rosinyl monomer good solvent are added to a reaction bulb, fully stirred, and dissolved, freezing is carried out for three times, oxygen in the mixed solution is removed in a circulation process of vacuum pumping and nitrogen filling, after the reaction is carried out for 1-24 hours at the temperature of 50-120 DEG C, the polymer is enabled to be deposited in methanol, filtered, and dried, and finally the cellulose-g-resin acid grafted copolymer is obtained. According to the preparation method of the cellulose-g-resin acid grafted copolymer, cellulose-g-resin acid grafted copolymer with different molecular weights and different molecular weight distributions can be obtained. The cellulose-g-resin acid grafted copolymer can be used for improving tenacity of materials by serving as functional additive agents.

Methods of treating pulp stocks with an enzyme formulation containing one or more oxidative enzymes, to reduce pitch deposition, control pitch related problems, modify the physical and/or chemical properties of tri, di-, and mono-glycerides, fatty acids, resin acids, esters of fatty acids and resin acids, and metal soaps of fatty acids and resin acids, or change the concentration of triglycerides, fatty acids, resin acids, and esters of fatty acids and resin acids, have been developed. The pulp stock is treated with an enzyme formulation containing laccases, peroxidases, esterases, and/or combinations thereof. The enzyme formulations may also contain a laccase mediator and/or a dispersant. The enzyme formulation can be applied at any of several locations during the pulping and/or papermaking process. The enzyme formulation is typically applied as a solution to the pulp stock. The enzyme treatment is effective at a temperature of between about 30° C. to about 95° C., more preferably from about 50° C. to about 80° C. The pH of the pulp stock is from about 4.0 to about 7.0, more preferably from about 4.5 to 5.5. The stock can be treated for a period of time ranging from about 5 minutes to about 10 hours.

This invention relates to a method and device to produce esterified, olefinated/esterified, or thermochemolytic reacted bio-oils as fuels. The olefinated/esterified product may be utilized as a biocrude for input to a refinery, either alone or in combination with petroleum crude oils. The bio-oil esterification reaction is catalyzed by addition of alcohol and acid catalyst. The olefination/esterification reaction is catalyzed by addition of resin acid or other heterogeneous catalyst to catalyze olefins added to previously etherified bio-oil; the olefins and alcohol may also be simultaneously combined and catalyzed by addition of resin acid or other heterogeneous catalyst to produce the olefinated/esterified product.

The present invention relates to aqueous, two-component compositions containing

A) hydroxyl-containing polydimethylsiloxanes having number average molecular weights of 400 to 3000 and an average OH functionality of ≧1.8, and containing at least one structural unit of formula I)

wherein

• • R is an aliphatic, linear or branched C₁ to C₂₀ radical,
  • R¹ is a linear or branched hydroxyalkyl radical having 2 to 10 carbon atoms and
  • R² is either hydrogen or a linear or branched hydroxyalkyl radical having 2 to 10 carbon atoms,
• B) addition polymers containing hydroxyl groups and having a number average molecular weight M_n of 500 to 50,000, a hydroxyl number of 16.5 to 264 mg KOH/g solid resin, an acid number of 0 to 150 mg KOH/g solid resin and a chemically bound carboxylate and/or sulphonate group content of 5 to 417 milliequivalents per 100 g of polymer solids, and C) polyisocyanates. The present invention also relates to coatings, adhesives or sealants obtained from these compositions.

The invention relates to a method for the fractionation of knotwood extract, which has been obtained by extraction of knotwood with a hydrophilic solvent. The hydrophilic extract is extracted with a lipophilic solvent to remove lipophilic impurities. The invention also relates to the use of a liquid-liquid extraction for the purification of hydrophilic knotwood extract. The present process provides a purified knotwood extract, which contains more than 90% lignans, flavonoids and stilbenes and less than 10% impurities selected from resin acids, fatty acids, sterols, juvabiones, triglycerides and combinations thereof.

A method and product is disclosed which provides emulsion stability and filtration control to invert emulsion drilling fluids. The product comprises a blend of a carboxylic acid terminated polyamide and/or a wetting agent with a reaction product or mixture produced by the Diels-Alder reaction of dienophiles, preferably carboxylic acids, polycarboxylic acids, acid anhydrides, or combinations or mixes thereof, with a mixture of fatty acids and resin acids. The product of the invention is extremely effective, decreasing by about two-thirds the amount of emulsifier generally required to formulate an effective drilling fluid. The product of the invention also greatly reduces and in many cases eliminates the need for conventional fluid loss additives, and additionally provides electrical stability. Moreover, the product of the invention has a pour point as low as about 20 degrees Fahrenheit with minimal solvents, thereby eliminating the need to ship large amounts of inert material for use, and may be transported in a highly active state.

An abrasive composition which is used during the pattern formation wherein buried copper wiring and insulating layers are alternately formed by grinding each copper layer which is formed on each insulating layer via a barrier layer, specifically in a process wherein each copper layer is ground until the barrier layer adjacent thereto is exposed. The abrasive composition contains an alicyclic resin acid, a colloidal silica and tetramethylammonium ions. The colloidal silica is contained in an amount of 0.1-1.5% by mass relative to the abrasive composition, and has an average primary particle diameter of 10-40 nm and an average secondary particle diameter of 30-80 nm, with the value obtained by multiplying the average secondary particle diameter by the amount thereof contained in the composition being within the range of 10-40.

The invention relates to a fluoroelastomer heat-shrinkable tube and a manufacturing method thereof. In order to overcome the defects that a traditional heat-shrinkable tube has poorer performance on resisting temperature, oil and solvents and cannot adapt to high performance requirements on resisting the oil and the solvents in industries of automobiles, high-speed trains, war industry, aerospaceand the like, the invention provides the fluoroelastomer heat-shrinkable tube which mainly comprises the materials of a fluoroelastomer, a fluorine resin acid acceptor, a reinforcing agent and a plasticizer. Meanwhile, the invention also provides a method for manufacturing the heat-shrinkable tube by using the materials. The fluoroelastomer heat-shrinkable tube provided by the invention can be applied to the industries of automobiles, high-speed trains, war industry, aerospace and the like which have higher requirements for resisting high and low temperature and the solvents.

The invention relates to the foaming plastic technical field, in particular to magnetic foaming plastic, which comprises 25-65% plastic rubber composition, 20-60% magnetic powder, 5-15% foamable agent, 5-30% talcum powder filling agent and 2-10% resin acids lubricating agent according to parts by weight, wherein plastic rubber composition is one of EVA, PVC, PE, POE and TPE, magnetic powder is rare earth magnet neodymium iron boron magnetic powder, foamable agent is azobisformamide, adhesive agent is dicumyl peroxide, resin acids lubricating agent is one of monoglyceryl stearate and calcium stearate. Plastic after shaped can be randomly bended according to demanded shapes, and has elasticity, and can joint with other materials, the surface can be randomly polished, and the magnetism is much stronger after polished, recovery and usage space is large, the plastic can be shaped secondly, which is reshaped into shapes which is required through coining heating, and is easy to process since hardness is small.

A modified calcium carbonate comprising calcium carbonate as a raw material and, superimposed on the surface thereof, (i) a silica layer, (ii) an organic acid layer constituted of at least one member selected from the group consisting of fatty acids, fatty acid salts, fatty acid esters, resin acids, resin acid salts and resin acid esters and (iii) a layer of silane coupling agent; and a polymer composition comprising the modified calcium carbonate.

The invention discloses a bubble film method of nanometer particle material in the chemical nanometer material manufacturing industry, which comprises the following steps: adapting bubble film reactor with bubble lid disk-typed stirrer to generate bubble; dividing the whole reacting liquid into film through bubble to form nanometer reacting environment; taking the soluble salt, oxide or hydroxide of IIA-race, IIIB-race, 13th and 22-32nd element as raw material; regarding NaOH, NH3-H2O, NH3, Ca(OH)2 or CO2 as sedimenter; making the sulfonate, sulfate, phosphate, titanate, silicate or these resin acid salt with at least one OH in the center, S, P, Ti and Si as surface modified coating agent; reacting the reactor in the film to generate nanometer particle and nanometer capsule particle; adsorbing enough quantity gas on the particle surface to form gas-phase boundary; inhibiting the agglomeration among particles from forming hydrogen bonding bridge; generating the foam-typed product; separating; cleaning; drying; producing nanometer particle, nanometer capsule particle loose block or powder.

The present invention provides a room-temperature-curable polyorganosiloxane composition which can become a silicone rubber with matte surface and is free from deterioration in physical properties. Specifically, the room-temperature-curable polyorganosiloxane composition comprises:

• • (A) 100 parts by weight of a substantially straight-chain polyorganosiloxane having a viscosity of 20 to 1,000,000 centistokes at 25° C., and having a molecular chain terminal being sealed with a silanol group or a silicon atom-bonded hydrolyzable group;
  • (B) 0.1 to 15 parts by weight of an organic silicon compound having 3 or more silicon atom-bonded hydrolyzable groups in a single molecule;
  • (C) 0 to 15 parts by weight of a condensation reaction catalyst;
  • (D) 100 to 400 parts by weight of a non-treated ground calcium carbonate or a ground calcium carbonate surface-treated with resin acid; and
  • (E) 1 to 200 parts by weight of a non-treated precipitated calcium carbonate or a precipitated calcium carbonate surface-treated with resin acid,
  • wherein at least one of (D) component and (E) component is required to be treated with resin acid, and
  • wherein the amount of (D) component relative to the sum of (D) component and (E) component is within the range of 50 to 99.9% by weight.

The invention discloses a method for producing refined light-color rosin by using turpentine as a raw material, which comprises the following steps: dissolving turpentine, purifying turpentine liquid,depositing and separating the rosin (resin acid), fusing the resin acid deposit, distilling and recycling the solvent and the terebinth, and the like. The rosin has the characteristics of light color, high acid value and low content of unsaponifiable matters, and achieves or exceeds the performance indexes of the refined light-color rosin prepared by the vacuum distillation technique. The methodhas the advantages of low equipment investment, simple operation and low operation cost, has favorable social and economic benefits, and is suitable for medium and small rosin fabrication plants.

A void reducing asphalt membrane composition for asphalt pavements that includes: an asphalt binder; an elastomeric polymer; a wax modifier; and at least one of: i) fumed silica or fumed alumina; and ii) a saponified fatty acid and a resin acid gelling compound. The composition is resistant to flow when applied and migrates into hot mix asphalt in the area of the longitudinal joint to reduce air voids to 7% or less and reduce water permeability. The composition becomes tack-free quickly after application. The composition bonds to asphalt, concrete, brick, stone and metal.

The invention relates to the use of mediator-enzyme system, which is characterised in that the enzyme comprises a laccase-type enzyme and the mediator comprises a chemical compound which acts as a redox intermediate in the enzymatic oxidation, for the elimination of lipophilic compounds (including, among others, sterols that are free and conjugated in the form of esters and glycosides, triglycerides, fatty alcohols and resin acids) which cause deposits in the product, the machinery and the circuits during the production of pulp and paper (both from hardwood and softwood and non-woody plants). The treatment eliminates up to 100% of the aforementioned lipophilic compounds, depending on the material treated, and, in this way, improves the quality of the pulp obtained, the operation of the industrial installations and the characteristics of the end product.

The invention discloses a chlorinated polyvinyl chloride resin acid-phase method production process. The working procedures of the production process comprises chlorination, deacidification by filtering, washing by water, neutralizing and drying, reactants of the chlorination procedure comprise the following components in parts by weight: 100 parts of polyvinyl chloride, 500 to 600 parts of hydrochloric acid solution with the mass concentration being 0.1 to 22 percent, 0.2 to 0.4 part of dispersing agent, 0.1 to 0.2 part of emulsifier and 0.1 to 0.3 part of initiator; the operating steps of the chlorination procedure are as follows: (1) adding the dispersing agent, the emulsifier and the polyvinyl chloride into the hydrochloric acid solution, and then stirring for emulsification and dispersion; (2) heating up to 70 to 80 DEG C, adding the initiator, then pumping a chlorine gas into reaction liquid for a chlorination reaction, wherein the reaction temperature is not over 110 DEG C, the pressure is controlled to be not higher than 0.45 MPa, and when the chlorine content reaches needing, the reaction is finished. According to the production process, the chlorination reaction is performed by replacing an aqueous medium with a hydrochloric acid medium with a certain concentration, so that the uniformity of the chlorination reaction is improved, and the chlorine content is stable; meanwhile, after the concentration of acid is increased, acid liquor is recycled, and an assistant in mother liquor is recycled, so that the discharge of waste acid is reduced, the discharge of organic matters is also reduced, the efficiency is improved, the cost is lowered and environment protection is strengthened.

The invention discloses a preparation method of dibasic acid of higher fatty acid and rosin resin acid, comprising the following steps: step 1, appropriate grease is heated up to 150-190 DEG C, which is then catalyzed and hydrolyzed with high pressure to obtain fatty acid used for polymerization reaction; and step 2, the above higher fatty acid and appropriate rosin are premixed and added with a catalyst and a promoter, so that the mixed system is maintained at the pressure of 0.4-1.0MPa, then polymerization addition is carried out at 200-280 DEG C to obtain the required novel dibasic acid. Compared with versamid prepared by ordinary dimer acid, the versamid firming agent synthesized by the novel dibasic acid of the invention has better miscibility with epoxy resin due to the addition of the alicyclic structure of rosin, and the epoxy resin solidifying material has higher mechanical properties of compression strength, modulus of compressibility, bending strength, bending modulus and the like. The invention takes biomass resource grease and rosin as materials, having the biological degradability with which the petrified materials are not provided.

The invention discloses a preparation method of full bio-based vitrimer, which is prepared from a rosin resin acid derivative and epoxidized soybean oil under the action of a catalyst. The preparationmethod of full bio-based vitrimer provided by the invention prepares the full bio-based vitrimer material containing a hydrogenated phenanthrene ring structure, through use of the bio-based raw materials epoxidized soybean oil and rosin resin acid derivative, the problems of high toxicity of traditional bisphenol A vitrimer and poor mechanical properties and low glass transition temperature of soybean oil based vitrimer are effectively solved. At the same time, the obtained vitrimer is a completely biomass based material with no toxicity and good biocompatibility, and can undergo self-healing, reprocessing and shape memory. Also the preparation method is simple, has strong operability, and is easy to implement.