Method for abstracting and removing phorbol ester from barbadosnut seed oil meal

The invention relates to a method for removing phorbol esters from Jatropha curcas seed oil by extraction. The method comprises drying Jatropha curcas seed oil meal obtained from pre-squeezing and leaching processes, grinding into powder, mixing with industrial methanol at a weight ratio of 3.5:1.1 at 30 DEG C for more than 20 min, filtering to separate oil meal and methanol phase, collecting theoil meal and heating to remove residual methanol in the oil meal to obtain detoxicated plant protein; and concentrating the separated methanol phase to obtain phorbol ester product. After removing phorbol esters by methanol extraction, the content of phorbol esters in the oil meal is reduced from 1.78% to 0.014%, so that the oil meal can be used in preparing feed proteins.

水基液膜型混凝土养护剂

... 本发明涉及一种水性液膜型的混凝土养护剂，是由丙烯酸聚合物乳液、蜡乳液、成膜助剂、润湿剂、增塑剂和流平剂等组成的高效混凝土养护剂。本发明的养护剂具有很好的成膜性能和一定渗透性能，当涂布在初凝的混凝土及水泥沙浆表面时，形成连续的无色不透水的高效养护薄膜，同时它又能渗透至混凝土毛细孔内，密封毛细孔，防止水分蒸发和水泥混凝土表面泌水现象的发生，起到很好的保水、保温效果，促使水泥彻底水化，提高混凝土的结构强度。 ...

Rubber sponge for high performance diving suit and production method thereof

The invention relates to rubber sponge for the high performance diving suit and a production method thereof. The sponge uses chloroprene rubber as the matrix material and filler, plasticizer, aging resister, a curing system and a foaming system are added in chloroprene rubber to prepare the rubber sponge. The rubber sponge comprises the following components in parts by weight: 100 parts of chloroprene rubber, 30-70 parts of filler, 20-60 parts of plasticizer, 0.5-2 parts of aging resister, 6-18 parts of curing system and 5-20 parts of foaming system. The preparation method of the sponge comprises the following steps: using the two-stage mixing method to mix raw materials and obtain uniform compounded rubber; and then performing primary curing and foaming at 120-160 DEG C for 10-30 minutes and performing secondary deep curing at 120-180 DEG C. The invention has the following advantages: the sponge material has high strength and good flexibility; the elongation is up to more than 500%, the ...

Water-base liquid film-type concrete curing agent

The present invention is efficient concrete curing agent comprising polyacrylic acid emulsion, wax emulsion, filming assistant, moistening agent, plasticizer, leveling agent, etc. It has excellent filming performance and certain permeability. When the curing agent is painted to the surface of initially setting concrete and cement mortar, it will form continuous color-less watertight protecting film while penetrating into capillary in concrete. It can prevent water from evaporating and concrete surface from bleeding, maintain water and temperature, promote hydration of cement and raise the structural strength of concrete.

Low-gloss polishing agent composition

The invention discloses a low-gloss polishing agent composition. The polishing agent composition is mainly characterized in that the polishing agent composition at least comprises a metallic crosslinking or self-crosslinking polymer film forming agent and a sol delustering agent. The polishing agent composition is simple to prepare and is stable to store. The leveling property of the polishing agent composition is not influenced. The polishing agent composition has good scratch resistance. When the polishing agent composition is coated on the ground and the surface of a worktable, the low-gloss and unsmooth effects can be generated. The low-gloss polishing agent composition is suitable for special requirements of a plurality of surfaces.

Polycarboxylic acid water reducing agent for gypsum and preparation method thereof

The invention discloses a polycarboxylic acid water reducing agent for gypsum and a preparation method thereof. The water reducing agent is prepared by copolymerizing unsaturated polyoxyalkylene base ether monomers, unsaturated monocarboxylic acid and derivative monomers thereof, and other monomers capable of being copolymerized with those monomers in a radical polymerization system. The gypsum water reducing agent has the advantages of high water-reducing rate, no delayed coagulation and the like, and the preparation method has the advantages of low energy consumption, high efficiency and good repeatability and stability.

Polycarboxylic acid gypsum water reducing agent and preparation method thereof

The invention discloses a polycarboxylic acid gypsum water reducing agent and a preparation method thereof. The gypsum water reducing agent is prepared by copolymerizing unsaturated polyoxyalkylene base ether monomers, unsaturated monocarboxylic acid and derivative monomers thereof, and other monomers capable of being copolymerized with the monomers in a radical polymerization system. The gypsum water reducing agent has the advantages of high water-reducing rate, good stability and the like, and has certain delaying effect on gypsum solidification; and the preparation method has the advantages of low energy consumption, high efficiency and good repeatability and stability.

Polycarboxylic acid super-plasticizer

The invention discloses a polycarboxylic acid super-plasticizer. The polycarboxylic acid super-plasticizer is obtained by copolymerization of 70 to 95 percent of monomer A, 3 to 25 percent of monomer B, 0.5 to 10 percent of monomer C and 0 to 20 percent of monomer D in aqueous solution of 50 to 100 DEG C and in the presence of an initiator and a chain transfer agent. The polycarboxylic acid super-plasticizer has high water-reducing rate and high slump holding capability.

Polyocarboxylic acid high-performance water reducer

The invention discloses a polyocarboxylic acid high-performance water reducer. The polyocarboxylic acid high-performance water reducer is prepared by copolymerizing 60 to 95 percent of monomer A, 3 to 25 percent of monomer B, 0.1 to 30 percent of monomer C and 0 to 20 percent of monomer D in aqueous solution of which the temperature is 50 to 100 DEG C and in the presence of an initiator and a chain transfer agent. The polyocarboxylic acid high-performance water reducer of the invention has high water reducing rate and high slump holding capacity.

Cement based ground material possessing capability of releasing negative ions

Tumor-targeted developing composition for magnetic resonance image-forming diagnose and preparation thereof

The present invention discloses a tumour targeting development composition for magnetic resonance imaging diagnosis and a preparation method thereof. The components of the composition comprise: an external water phase and a modified liposome body of phospholipids suspended in the external water phase, and the modified liposome body of phospholipids comprises a paramagnetic developer therein, polyethylene glycol covering the outer surface of the liposome body of phospholipids for leakage resistant modification or derivatives thereof and/or polypeptide numerators covering the outer surface of the liposome body of phospholipids for targeting modification. The coverage rate of the paramagnetic developer in the liposome is not lower than 60 percent so that the background noise during the magnetic resonance imaging is prominently reduced and the contrast quality of the image is improved. The liposome is good in physical chemistry stability and small in particle size. With the micropore degerming ...

Polycarboxylic acid polymer dispersant and preparation method thereof

The invention discloses a polycarboxylic acid polymer dispersant and a preparation method thereof. The polycarboxylic acid polymer dispersant contains a structural unit (1) from unsaturated polyether monomer, a structural unit (2) from unsaturated polyether monomer, and 3.0-20.0 wt% of a structural unit (3) from unsaturated carboxylic acid monomer; and the weight average molecular weight of the polycarboxylic acid polymer is 10000-120000. The preparation method comprises the following steps: in the presence of an initiator, polymerizing unsaturated polyether monomer (A), unsaturated polyethermonomer (B) and unsaturated carboxylic acid monomer (C) at 20-110 DEG C to obtain the polycarboxylic acid polymer dispersant. The polycarboxylic acid polymer dispersant still has high water reducing rate for concrete under the condition of low doping amount; and meanwhile, the concrete doped with the polycarboxylic acid polymer dispersant still has favorable slump constant and fluidity.

Emulsoid for water base floor polishing agent

The present invention discloses a kind of emulsoid for water-base floor polishing agent and with combined self cross-linking and metal cross-linking. The emulsoid is prepared through emulsion polymerization and adding transition metal complex compound. The present invention features that the emulsoid has the monomer composition of C4-C10 alkyl acrylate in 30-60 wt%, C3-C6 alkenyl carboxylic acid in 10-20 wt%, vinyl aromatic compound in 20-60 wt% and C4-C20 cross-linking acrylic acid monomer in 1-6 wt%; and the transition metal complex compound is zinc-ammonia complex compound. The floor polishing agent composition prepared with the emulsoid has very low volatile organic matter content, can form film at room temperature, and has excellent endurance, antifouling property, scrubbing resistance and alkali stripping property.

Polyocarboxylic acid high-performance water reducer

The invention discloses a polyocarboxylic acid high-performance water reducer. The polyocarboxylic acid high-performance water reducer is prepared by copolymerizing 60 to 95 percent of monomer A, 3 to 25 percent of monomer B, 0.1 to 30 percent of monomer C and 0 to 20 percent of monomer D in aqueous solution of which the temperature is 50 to 100 DEG C and in the presence of an initiator and a chain transfer agent. The polyocarboxylic acid high-performance water reducer of the invention has high water reducing rate and high slump holding capacity.

Method for purifying biological diesel oil byproduct glycerin

The invention discloses a purification method of glycerin which is a byproduct of biodiesel. The purification method comprises the following steps: the glycerin that is the byproduct obtained during the biodiesel preparation process is evaporated to remove methanol by 70 percent to 80 percent in the glycerin; sulphuric acid solution or hydrochloric acid solution is added until the pH value thereof is adjusted to reach 5 to 6, wherein, the concentration of the sulphuric acid solution or the hydrochloric acid solution is 2 to 3 mol/l; mixed solution is performed through centrifugal separation, free fatty acid in upper solution and residual solid catalyst in lower solution are removed, and glycerin phase in middle solution is collected; water is added in the glycerin phase for diluting; the diluted solution is dropped into an ion exchange column which contains macroporous acid resin and macroporous alkali resin at the same time with the flow speed of 2.0 to 3.0ml/min for exchanging, and effluent ...

Method for preparing nano solid base catalyst with nucleocapsid structure for synthesizing biodiesel

The invention discloses a preparation method of a nanometer solid base catalyst with a nuclear shell structure for synthesizing biodiesel, comprising the following steps: (nanometer) oxide particles of which the particle diameter is smaller than 50nm are selected, a suspended disperse system is formed by the oxide particles, a dispersing agent and soluble aluminum salt in ethanol under the condition of ultrasonic oscillation, and then, the water solution of Ca(OH)2 is dropwise added to the disperse system until the pH value ranges from 6 to 8; the ultrasonic oscillation is continuously carried out for at least 30min to obtain suspending liquid, and then, the suspending liquid is filtered by suction, dried, milled and calcined to obtain the nanometer solid base catalyst with the nuclear shell structure, wherein the mass ratio of the (nanometer) oxide particles to the soluble aluminum salt to the dispersing agent is 1 : 0.2 to 0.8 : 0.1 to 0.3. The prepared catalyst has good catalytic effect ...

Acrylate emulsion modified cement-base repair mortar

The invention discloses acrylate emulsion modified cement-base repair mortar, which consists of the following components in part by weight: 100 parts of portland cement, 50 to 220 parts of 0.50 to 2.0 millimeters of quartz sand, 10 to 100 parts of less than 0.50 millimeter of quartz sand, 5 to 80 parts of acrylate emulsion, 0 to 1.0 part of water reducing agent, 0.5 to 5.0 parts of polypropylene fiber, 0 to 1 part of cellulose ether, 0 to 1.2 parts of defoaming agent and 0 to 60 parts of water. The acrylate emulsion modified cement-base repair mortar has high breaking strength, bonding strength, volume stability, durability and compatibility with cement-base materials, has the high flowability and water-retaining property in the aspect of construction performance, can meet the requirements of different engineering constructions, and can be widely applied to the repair in fields of municipal administration, road surfaces, airports, ports, bridges, dams and the like.

High-early strength polyocarboxy acid superplasticiser

The invention discloses an early-strength type polycarboxylate superplasticizer which is prepared by copolymerization of four monomers under the conditions of being in water solution with 60 DEG C to 95 DEG C and having a free radical initiator and a chain transfer agent. The early-strength type polycarboxylate superplasticizer introduces a new polymerization monomer on a polymer molecular chain to form a new polymer molecular structure, thereby improving the water-reducing rate and the early strengthening ability of the polycarboxylate superplasticizer. In particular to the manufacture of precast concrete, the early-strength type polycarboxylate superplasticizer can significantly improve the early-strength of the concrete, further carry out the mould release in advance, improve the production ability and reduce the production energy consumption of the precast concrete.

Polycarboxylic acid water reducing agent for gypsum and preparation method thereof

The invention discloses a polycarboxylic acid water reducing agent for gypsum and a preparation method thereof. The water reducing agent is prepared by copolymerizing unsaturated polyoxyalkylene base ether monomers, unsaturated monocarboxylic acid and derivative monomers thereof, and other monomers capable of being copolymerized with those monomers in a radical polymerization system. The gypsum water reducing agent has the advantages of high water-reducing rate, no delayed coagulation and the like, and the preparation method has the advantages of low energy consumption, high efficiency and good repeatability and stability.

Method for preparing powdery polycarboxylic acid hyperdispersant

The invention discloses a method for preparing a powdery polycarboxylic acid hyperdispersant. The method comprises the following steps of: a) adding superfine inorganic powder or sol into solution of polycarboxylic acid polymer and uniformly mixing to obtain polycarboxylic acid slurry, wherein the solid content of the solution of polycarboxylic acid polymer is 10 to 60 percent, and the weight ratio of the superfine inorganic powder or sol to the solution of polycarboxylic acid polymer is 0.001 to 20; and b) forming atomized droplets from the polycarboxylic acid slurry which is obtained in the step a by using an atomizer, and introducing the atomized droplets into a dying chamber to dry and dewater; and when the polycarboxylic acid slurry is atomized and dried, simultaneously adding an inorganic separant into the dying chamber to prevent the formed powder from sticking to walls and caking so as to obtain the powdery polycarboxylic acid hyperdispersant. The product obtained by the invention ...

Starch derivative copolymer and preparation method and application thereof

The invention discloses a starch derivative copolymer and a preparation method and application thereof. The starch derivative copolymer is prepared by copolymerizing 30 to 95 percent of amylin maleic acid monoester, 5 to 20 percent of unsaturated carboxylic acid monomer and 0 to 65 percent of other copolymerizable monomer C in aqueous solution at the temperature of 50-100DEG C. The starch derivative copolymer can be used as a cement dispersing agent, a cement mortar additive and a water reducer for concrete, and has the advantages of low cost, good water solubility, good compatibility when compounded with a polycarboxylic acid water reducer, and the like.

Low-luster polishing agent combination and preparation method thereof

High-purity ultra-fine titanate preparing method

This invention discloses a preparation method for high-purity superfine titanate. Firstly, soluble organic titanium compatible anion is prepared according to the organic combplexing principle, then the said anion undergoes complex decomposition in water phase with soluble metal salt to obtain homogeneous high-purity superfine organic titanate compound with consistent proportion ratio, and finally, the organic titanate compound is thermo-decomposed under 700-1000 deg.C to obtain high-purity superfine titanate.

Fragrant artificial lawn fiber and its preparation method

The invention discloses an aromatic artificial turf fiber, which is prepared by aromatic microcapsule through a blending method or an after-treatment method, wherein the aromatic microcapsule is made from essence and a wall material which is encapsulated on the outer side, and the particle diameter is 1-100 micron. The specific preparation steps are that: 1, the aromatic microcapsule is made through that essence emulsion is coated in the wall material through a monolayer or multilayer wall-building method. 2, The aromatic artificial turf fiber is prepared through the aromatic microcapsule, matrix resin, color master batch or additives are mixed to be extruded and formed, or after the aromatic microcapsule and water are made into finishing agent according to a certain proportion, the finishing agent is adhered on the surface of artificial turf fiber to prepare the aromatic artificial turf fiber through smearing, leaching and pressing. The aromatic artificial turf which is prepared by the ...

Color master batch for polyolefin grass fiber and its preparation method

The invention relates to a technology of color master batches for a polyolefin yarn fiber, which comprises pigments, plastic additives and carrier resin, wherein the plastic additives comprise dispersed lubricant, an antioxidant, a light stabilizer, a coupling agent and liquid paraffin. The process for preparation is that the pigments, a part of plastic additives and the carrier resin are added into a high-speed mixer to be mixed, and then the coupling agent and the liquid paraffin are added to be stirred in a high speed, and at last the above stirred mixture is sent to a twin-screw extruder to be extruded, cooled, dried and granulated. The invention has the characteristics of less dosage, excellent weathering resistance, easy dispersing and excellent processability, and is suitable for the yarn fiber which takes polyethylene, polypropylene and other copolymer as base materials.

Polycarboxylic acid polymer dispersant and preparation method thereof

The invention discloses a polycarboxylic acid polymer dispersant and a preparation method thereof. The polycarboxylic acid polymer dispersant contains a structural unit (1) from unsaturated polyether monomer, a structural unit (2) from unsaturated polyether monomer, and 3.0-20.0 wt% of a structural unit (3) from unsaturated carboxylic acid monomer; and the weight average molecular weight of the polycarboxylic acid polymer is 10000-120000. The preparation method comprises the following steps: in the presence of an initiator, polymerizing unsaturated polyether monomer (A), unsaturated polyether monomer (B) and unsaturated carboxylic acid monomer (C) at 20-110 DEG C to obtain the polycarboxylic acid polymer dispersant. The polycarboxylic acid polymer dispersant still has high water reducing rate for concrete under the condition of low doping amount; and meanwhile, the concrete doped with the polycarboxylic acid polymer dispersant still has favorable slump constant and fluidity.

Cation acrylate emulsion

The invention discloses a cation acrylate emulsion which comprises deionized water, an initiator, an emulsifier, styrene, a C4-C12 alkyl acrylate unsaturated monomer, a C4-C20 methyl acrylate unsaturated monomer, a C7-C12 alkylamino (methyl) acrylate cation monomer, an acrylamide functional monomer and acid. The cation acrylate emulsion is obtained by neutralizing a polymer emulsion with acid through an emulsion polymerization method. The cation acrylate emulsion has good sealing and separation obstructing performances on aqueous spots such as wood effusion, tannic acid, water damage, smoke spot, doodle, aqueous ink smudge and saline and alkaline spot, and can be used for preparing aqueous wood paint and first coat and face coat of internal and external wall paint, wherein the paint has a spot sealing performance; and the cation acrylate emulsion has good adhesive attraction on various substrates, especially harsh substrates and can be applied to first coat formulas of metal, plastic, leather ...

Preparation method of re-dispersible latex powder of acrylic acid

The invention discloses a preparation method of re-dispersible latex powder of acrylic acid. The preparation method comprises the preparation of the re-dispersible latex powder emulsion of acrylic acid and the spray drying of the re-dispersible latex powder emulsion of acrylic acid. The re-dispersible latex powder emulsion of acrylic acid adopts design of core-shell particles and is obtained by acrylic acid monomer in a way of emulsion polymerization. When the emulsion is sprayed and dried, a mineral anti-adhesive agent is added to obtain the re-dispersible latex powder of acrylic acid. The re-dispersible latex powder of acrylic acid can be added in concrete and mortar to improve the compressive strength, rupture strength, wear resistance, toughness, adhesion strength, water-retention capacity and constructability of the concrete and mortar.

Starch derivative copolymer and preparation method and application thereof

The invention discloses a starch derivative copolymer and a preparation method and application thereof. The starch derivative copolymer is prepared by copolymerizing 30 to 95 percent of amylin maleic acid monoester, 5 to 20 percent of unsaturated carboxylic acid monomer and 0 to 65 percent of other copolymerizable monomer C in aqueous solution at the temperature of 50-100DEG C. The starch derivative copolymer can be used as a cement dispersing agent, a cement mortar additive and a water reducer for concrete, and has the advantages of low cost, good water solubility, good compatibility when compounded with a polycarboxylic acid water reducer, and the like.

Diluent-free self-emulsifying waterborne epoxy resin emulsion and preparation method thereof

The invention relates to a diluent-free self-emulsifying waterborne epoxy resin emulsion and a preparation method thereof. The emulsion is prepared by blending bisphenol A epoxy resin and bisphenol F epoxy resin and reacting the mixture with polyether amine. The preparation comprises the following concrete steps: (1) fully stirring and blending at least one bisphenol A epoxy resin and at least one bisphenol F epoxy resin to obtain mixed epoxy resin; (2) adding the polyether amine into the mixed epoxy resin, and carrying out ring-opening reaction at a certain temperature to generate modified mixed epoxy resin; and (3) under the condition of stirring, dropwise adding water into the product from step (2), and carrying out self-emulsifying reaction to obtain the waterborne epoxy resin emulsion. The preparation method of the invention is simple and practicable, and is suitable for large-scale industrial production; and the obtained waterborne epoxy resin emulsion has the characteristics of fine ...

Closed composite for cement-based surface and preparation method thereof

The invention discloses a closed composite for a cement-based surface and a preparation method thereof. The closed composite is characterized by at least comprising a metal-crosslinking or self-crosslinking polymer film-forming agent and a hydrophilic polyurethane emulsion. The closed composite can form a continuous and compact film by being coated on the cement-based surface, has excellent adhesive force, plays roles of water resistance and abrasion resistance and can effectively prevent the dusting and ash hoisting of the cement-based surface.

Reduction and early strength polymer additive

The invention discloses a reduction and early strength polymer additive which is obtained by copolymerizing 60-95 percent of monomer A, 1-10 percent of monomer B, 3-16 percent of monomer C and 0-30 percent of monomer D in an aqueous solution at 50-100 DEG C in the presence of an initiator and a chain transfer agent. The polymer additive has the advantages of high water reduction rate, high early strength, low shrinkage, and the like when used for mortar or concrete.

Polycarboxylic acid super-plasticizer

The invention discloses a polycarboxylic acid super-plasticizer. The polycarboxylic acid super-plasticizer is obtained by copolymerization of 70 to 95 percent of monomer A, 3 to 25 percent of monomer B, 0.5 to 10 percent of monomer C and 0 to 20 percent of monomer D in aqueous solution of 50 to 100 DEG C and in the presence of an initiator and a chain transfer agent. The polycarboxylic acid super-plasticizer has high water-reducing rate and high slump holding capability.

Fragrant artificial lawn fiber and its preparation method

The invention discloses an aromatic artificial turf fiber, which is prepared by aromatic microcapsule through a blending method or an after-treatment method, wherein the aromatic microcapsule is madefrom essence and a wall material which is encapsulated on the outer side, and the particle diameter is 1-100 micron. The specific preparation steps are that: 1, the aromatic microcapsule is made through that essence emulsion is coated in the wall material through a monolayer or multilayer wall-building method. 2, The aromatic artificial turf fiber is prepared through the aromatic microcapsule, matrix resin, color master batch or additives are mixed to be extruded and formed, or after the aromatic microcapsule and water are made into finishing agent according to a certain proportion, the finishing agent is adhered on the surface of artificial turf fiber to prepare the aromatic artificial turf fiber through smearing, leaching and pressing. The aromatic artificial turf which is prepared by the ...

Gypsum particle dispersing agent and preparation method thereof

The invention discloses a gypsum particle dispersing agent and a preparation method thereof. The dispersing agent is obtained by copolymerizing unsaturated polyoxyalkylene ether monomer, unsaturated carboxylic acids and derivative monomers thereof and other monomers which can be copolymerized with the monomers under a radical polymerization system. The gypsum particle dispersing agent has the advantages of high water-reducing rate, stable structure, delayed coagulation and the like; and the preparation method thereof has low energy consumption, high efficiency and good repeat stability.

Method for preparing nano solid base catalyst with nucleocapsid structure for synthesizing biodiesel

The invention discloses a preparation method of a nanometer solid base catalyst with a nuclear shell structure for synthesizing biodiesel, comprising the following steps: (nanometer) oxide particles of which the particle diameter is smaller than 50nm are selected, a suspended disperse system is formed by the oxide particles, a dispersing agent and soluble aluminum salt in ethanol under the condition of ultrasonic oscillation, and then, the water solution of Ca(OH)2 is dropwise added to the disperse system until the pH value ranges from 6 to 8; the ultrasonic oscillation is continuously carried out for at least 30min to obtain suspending liquid, and then, the suspending liquid is filtered by suction, dried, milled and calcined to obtain the nanometer solid base catalyst with the nuclear shell structure, wherein the mass ratio of the (nanometer) oxide particles to the soluble aluminum salt to the dispersing agent is 1 : 0.2 to 0.8 : 0.1 to 0.3. The prepared catalyst has good catalytic effect ...

Slump retaining polyocarboxy acid superplasticiser

The invention discloses a slump maintaining type poly carboxylic acid superplasticizer, and the poly carboxylic acid superplasticizer is prepared by taking, according to the weight percentage, 10 to 60 percent of unsaturated polyalkylene glycol ether, 30 to 80 percent of alkoxy polyalkylene glycol ether (methyl) acrylic ester, 3 percent to 12 percent of unsaturated monocarboxylic acid or the saltand 2 percent to 8 percent of itaconic acid or the salt as the copolymerization monomers and carrying out the free radical copolymerization at the reaction temperature of 60 DEG C to 95 DEG C and in the presence of a free radical initiator and a chain transfer agent. The slump maintaining type poly carboxylic acid superplasticizer has the advantage of maintaining the high slump under the condition of low mixing amount.

Unsaturated polyester and preparation method thereof

The invention discloses unsaturated polyester and a preparation method thereof. The structure of the unsaturated polyester is shown by a formula (1). The preparation method is to perform the addition reaction of unsaturated glycerin ether and alkylene oxide at the temperature of 30 to 170 DEG C in the presence of a catalyst. The unsaturated polyester of the invention is used for synthesizing products such as a polymer dispersant and a high-performance polycarboxylate water reducer, so that the dispersion property and dispersion stability of the products can be improved.

Cement-based grouting material for ground source heat pump

The invention provides a cement-based grouting material for a ground source heat pump. The grouting material consists of the following components in percentage by mass: 20.0 to 50.0 percent of cement, 5.0 to 40.0 percent of admixture, 20.0 to 60.0 percent of fine aggregate, 0.02 to 2.0 percent of heat transfer compact reinforcing agent and 10.0 to 30.0 percent of water. The water-based grouting material has high flowing property, flowing keeping property and compacting property, and a high heat conduction coefficient, and is favorable for improving the efficiency of a ground source heat pump air-conditioning system.

Nano silicasol / acrylic ester composite emulsion and preparation thereof

The invention discloses a nanometer silica sol/acrylic ester composite latex and a preparation method thereof. The composite latex is formed by polymerizing acrylic ester monomers with nanometer silica sol and alkylol solvent; emulsion particles in the composite latex are in a nanometer nucleus-shell structure taking silicon dioxide granules as nucleus and acrylic ester multipolymer as shells; and the preparation method adopts a seed emulsion polymerization method or in situ polymerization method. The composite latex has higher tensile-strength and tearing strength and better performances of acid durability, weather resisting property, wearing resistance, ultraviolet aging resistance, anti-pollution resistance, and the like, can be applied to various aspects of inner and outer wall dope, ground and terrace dope, ground coating of specialty sports fields, and the like, is green and environment-friendly, and has wide market foreground.

High-early strength polyocarboxy acid superplasticiser

The invention discloses an early-strength type polycarboxylate superplasticizer which is prepared by copolymerization of four monomers under the conditions of being in water solution at 60 DEG C to 95 DEG C and having a free radical initiator and a chain transfer agent. The early-strength type polycarboxylate superplasticizer introduces a new polymerization monomer on a polymer molecular chain toform a new polymer molecular structure, thereby improving the water-reducing rate and the early strengthening ability of the polycarboxylate superplasticizer. Especially in the manufacture of precastconcrete, the early-strength type polycarboxylate superplasticizer can significantly improve the early-strength of the concrete, further carry out the mould release in advance, improve the productioncapacity and reduce the production energy consumption of the precast concrete.

Asphalt base ground material capable of purifying air

Admixture of gypsum slurry body

The invention discloses an admixture for a gypsum slurry body. The admixture comprises a component A and a component B, wherein the component A comprises a poly-carboxylic acid water reducer and a foam stabilizer, and the component B comprises a modifier; the component A accounts for 1.0-20.0% of the weight of the admixture, and the component B accounts for 80.0-99.0% of the weight of the admixture; and the component B is one or several of cement, lime and soda powder, and the doped quantity of the admixture is 0.5-5.0% of the weight of gypsum powder. The invention has the characteristics of high water reduction rate and no coagulation delay and can lower the volumetric weight of the gypsum. By preparing plasterboards through the gypsum admixture, the energy consumption of the production can be greatly lowered, and the production efficiency is enhanced.

Slump retaining polyocarboxy acid superplasticiser

The invention discloses a slump maintaining type polycarboxylate superplasticizer, and the polycarboxylate superplasticizer is prepared by taking 10 to 60 percent of unsaturated polyalkylene glycol ether, 30 to 80 percent of alkoxy polyalkylene glycol ether (methyl) acrylic ester, 3 percent to 12 percent of unsaturated monocarboxylic acid or the salt and 2 percent to 8 percent of itaconic acid or the salt as the copolymerization monomers according to the percentage by weight and carrying out the free radical copolymerization under the conditions of having the reaction temperature of 60 DEG C to 95 DEG C and having a free radical initiator and a chain transfer agent. The slump maintaining type polycarboxylate superplasticizer has the advantage that the slump maintaining type polycarboxylate superplasticizer can maintain the high slump under the condition of low mixing amount.

High-purity ultra-fine titanate preparing method

Fluorine-free polishing agent composition

The invention discloses a fluorine-free polishing agent composition. The composition consists of the following components in percentage by weight: 20.0 to 60.0 percent of acrylate-styrene polymer emulsion, 0.01 to 2.0 percent of wetting and flatting agent, 2.0 to 10.0 percent of film forming aid, 0.5 to 3.5 percent of tri-butoxyethyl phosphate, 0.0 to 10.0 percent of wax emulsion, 0.0 to 10.0 percent of alkali-soluble resin, 0.0 to 1.0 percent of antifoaming agent, 0.0 to 0.5 percent of bactericide and the balance of water. A polyether organic silicon surfactant is used for replacing a fluorine-containing surfactant so as to ensure the wetting and flatting agent for nursing a coating and reduce the pollution of fluorine to the environment.

Monofilament fiber in polyolefin class and its preparation method

Admixture of gypsum slurry body

The invention discloses an admixture for a gypsum slurry body. The admixture comprises a component A and a component B, wherein the component A comprises a poly-carboxylic acid water reducer and a foam stabilizer, and the component B comprises a modifier; the component A accounts for 1.0-20.0% of the weight of the admixture, and the component B accounts for 80.0-99.0% of the weight of the admixture; and the component B is one or several of cement, lime and soda powder, and the doped quantity of the admixture is 0.5-5.0% of the weight of gypsum powder. The invention has the characteristics of high water reduction rate and no coagulation delay and can lower the volumetric weight of the gypsum. By preparing plasterboards through the gypsum admixture, the energy consumption of the production can be greatly lowered, and the production efficiency is enhanced.

Unsaturated polyester and preparation method thereof

The invention discloses unsaturated polyester and a preparation method thereof. The structure of the unsaturated polyester is shown by a formula (1). The preparation method is to perform the addition reaction of unsaturated glycerin ether and alkylene oxide at the temperature of 30 to 170 DEG C in the presence of a catalyst. The unsaturated polyester of the invention is used for synthesizing products such as a polymer dispersant and a high-performance polycarboxylate water reducer, so that the dispersion property and dispersion stability of the products can be improved.

Preparation method of high dispersed nano-silver particle

Multifunctional acrylic ester emulsion

The invention discloses a multifunctional acrylic ester emulsion, which is prepared from deionized water, an initiator, an emulsifier, acrylic acid alkyl ester of C4 to C12, alkyl methacrylate of C4-C12, an aryl unsaturated monomer, an unsaturated monomer of C3 to C4, an acrylamide functional monomer, a silane coupler, and other components which are subjected to mechanical stirring to disperse olefin unsaturated monomers into water, and carry out free radical polymerization under the action of the initiator to obtain the emulsion. The emulsion in thermal insulation mortar has the functions of reinforcing tenacity and strength, remarkably improves the bonding strength of the mortar, increases the compressive strength/rupture strength ratio of hardened mortar, and brings about the stable quality of walling materials, improves construction efficiency and reduces mortar contraction. The emulsion which is applied to polymer cement waterproof paint has good water proofing function with great ...

Multifunctional acrylic ester emulsion

The invention discloses a multifunctional acrylic ester emulsion, which is prepared from deionized water, an initiator, an emulsifier, acrylic acid alkyl ester of C4 to C12, alkyl methacrylate of C4-C12, an aryl unsaturated monomer, an unsaturated monomer of C3 to C4, an acrylamide functional monomer, a silane coupler, and other components which are subjected to mechanical stirring to disperse olefin unsaturated monomers into water, and carry out free radical polymerization under the action of the initiator to obtain the emulsion. The emulsion in thermal insulation mortar has the functions ofreinforcing tenacity and strength, remarkably improves the bonding strength of the mortar, increases the compressive strength/rupture strength ratio of hardened mortar, and brings about the stable quality of walling materials, improves construction efficiency and reduces mortar contraction. The emulsion which is applied to polymer cement waterproof paint has good water proofing function with great tensile ...

Polishing agent composition for wooden floor and furnitures maintenance

The invention discloses a brightener compound for wood floor and furniture nursing which comprises the following substance in the weight proportion of natural vegetable wax emulsion of 5-25%, polysiloxane emulsion of 0.5-10%, vegetable refined oil of 1.03-2.0%, natural resin emulsion of 0-5%, synthetic wax emulsion of 0.0-5%, colouring matter of 0.0-0.1% and water of 70-85%.The said brightener compound in the invention has a finite permeability and replenishes natural resin and vegetable refined oil into the inner of wood floor and furniture to stop the wood floor and furniture from drying crack and deforming by air drying, forms the protective film on the surface to cover and repair the lightness scratches and stop the scratches deep and blackening, and also has the characteristics of cleaning, electrostatic resistance, no dust and water resistance.

Polycarboxylic-acid copolymer dispersant and preparation method thereof

The invention discloses a polycarboxylic-acid copolymer dispersant and a preparation method thereof, wherein the dispersant is a polycarboxylic-acid copolymer which contains a structural unit (1), a structural unit (2) and a structural unit (3) and has the weight average molecular weight of 5000-120000, wherein the structural unit (1) is derived from an unsaturated polyether monomer, the structural unit (2) is derived from an unsaturated polyether monomer, and the structural unit (3) with the concentration of 5.0-30.0 percent by weight is derived from an unsaturated carboxylic-acid monomer; and the preparation method of the polycarboxylic-acid copolymer dispersant comprises the step of copolymerizing the unsaturated polyether monomer (A), the unsaturated polyether monomer (B) and the unsaturated carboxylic-acid monomer (C) at the temperature of 20-110 DEG C and in the presence of a chain transfer agent and an initiator to obtain the polycarboxylic-acid copolymer dispersant. Concrete still ...

Low-VOC (Volatile Organic Compound) self-emulsifying solid epoxy resin water-based emulsion and preparation method thereof

The invention discloses a low-VOC (Volatile Organic Compound) self-emulsifying solid epoxy resin water-based emulsion and a preparation method thereof. The emulsion is prepared from 30-80% of water dispersion medium and 20-70% of modified epoxy resin without solvent, wherein the modified epoxy resin is prepared from 30-80% of solid epoxy resin, 5-30% of organic solvent and 15-60% of polyether amine. The preparation method comprises the steps of: (1) dissolving the solid epoxy resin with the organic solvent and carryiny out ring-opening reaction with the polyether amine at a certain temperature so as to generate the modified epoxy resin; (2) decompressing and distilling to remove the organic solvent, and reducing the temperature; and (3) dropwise adding water in the product of the step (2)under the stirring condition and obtaining the water-based epoxy resin emulsion through self-emulsifying reaction. The method of the invention is simple and practical, and suitable for large-scale industrial ...

Method for abstracting and removing phorbol ester from barbadosnut seed oil meal

The invention relates to a method for removing phorbol esters from Jatropha curcas seed oil by extraction. The method comprises drying Jatropha curcas seed oil meal obtained from pre-squeezing and leaching processes, grinding into powder, mixing with industrial methanol at a weight ratio of 3.5:1.1 at 30 DEG C for more than 20 min, filtering to separate oil meal and methanol phase, collecting the oil meal and heating to remove residual methanol in the oil meal to obtain detoxicated plant protein; and concentrating the separated methanol phase to obtain phorbol ester product. After removing phorbol esters by methanol extraction, the content of phorbol esters in the oil meal is reduced from 1.78% to 0.014%, so that the oil meal can be used in preparing feed proteins.

Comb polymer anti-foaming agent

The invention discloses a comb polymer defoamer for a cement admixture, and the comb polymer defoamer is prepared by copolymerization of 30 to 85 percent of unsaturated polyethylene glycol ether monomer, 10 to 65 percent of unsaturated polyethylene glycol polypropylenglycol ether monomer, 5 to 20 percent of unsaturated carboxylic acid and derivative monomer thereof and 0 to 15 percent of other monomers which can be copolymerized with the monomers under the conditions of being in water solution with the temperature of 25 DEG C to 70 DEG C and using an oxidation-reduction system as an initiatoraccording to the percentage by weight. When the comb polymer defoamer is used as the cement admixture, the comb polymer defoamer can reduce the gas content in the concrete, further enhance the strength of the concrete; when the comb polymer defoamer is mixed with a polycarboxylate superplasticizer for use, the comb polymer defoamer can solve the problem of the stability of the defoamer and the polycarboxylate ...

Comb polymer anti-foaming agent

The invention discloses a comb polymer defoamer for a cement admixture, and the comb polymer defoamer is prepared by copolymerization of 30 to 85 percent of unsaturated polyethylene glycol ether monomer, 10 to 65 percent of unsaturated polyethylene glycol polypropylenglycol ether monomer, 5 to 20 percent of unsaturated carboxylic acid and derivative monomer thereof and 0 to 15 percent of other monomers which can be copolymerized with the monomers under the conditions of being in water solution with the temperature of 25 DEG C to 70 DEG C and using an oxidation-reduction system as an initiator according to the percentage by weight. When the comb polymer defoamer is used as the cement admixture, the comb polymer defoamer can reduce the gas content in the concrete, further enhance the strength of the concrete; when the comb polymer defoamer is mixed with a polycarboxylate superplasticizer for use, the comb polymer defoamer can solve the problem of the stability of the defoamer and the polycarboxylate ...

Low-VOC (Volatile Organic Compound) self-emulsifying solid epoxy resin water-based emulsion and preparation method thereof

The invention discloses a low-VOC (Volatile Organic Compound) self-emulsifying solid epoxy resin water-based emulsion and a preparation method thereof. The emulsion is prepared from 30-80% of water dispersion medium and 20-70% of modified epoxy resin without solvent, wherein the modified epoxy resin is prepared from 30-80% of solid epoxy resin, 5-30% of organic solvent and 15-60% of polyether amine. The preparation method comprises the steps of: (1) dissolving the solid epoxy resin with the organic solvent and carryiny out ring-opening reaction with the polyether amine at a certain temperature so as to generate the modified epoxy resin; (2) decompressing and distilling to remove the organic solvent, and reducing the temperature; and (3) dropwise adding water in the product of the step (2) under the stirring condition and obtaining the water-based epoxy resin emulsion through self-emulsifying reaction. The method of the invention is simple and practical, and suitable for large-scale industrial ...

Solid corrosive acid catalyzer used for catalyzeing and transmuting under thick oil well

The invention discloses a solid strong acid catalyst for thick oil catalyzing and transmutation underground. After making alumina powder or one or a plurality kinds of transition metal oxide powder mixing with impregnation liquid acidic solution, proceed welding to prepare. When in use, under the situation of not changing thermal production technique, adopt the way of preposing liquid section stuffing injection, the mass ration of catalyst in preposing liquid is 0.00001 to 0.1, the dosage of catalyst is 0.01 to 1.0wt per cent of dealing oil mass. The invention can take catalyzing effect to the thick oil, after the reaction, the heavy component asphaltene content in the thick oil is reduced, the viscosity is lowered and the thick oil part is lighter.

Latex used for phospho lipid modified floor polishing agent

A phosphate modified polishing agent for floor is prepared from phosphate, C3-C6 enylcarboxylic acid, C4-C10 alkyl (methyl) acrylate, and aromatic vinyl compound through emulsion polymerization. Its advantages are high durability, and high filming and coating performance under high humidity.