556 results about "Unsaturated monomer" patented technology

The invention provides a high-temperature thermal expansion microsphere with rapid foaming response and a preparation method of the high-temperature thermal expansion microsphere. The high-temperature thermal expansion microsphere comprises an olefinic unsaturated monomer, the olefinic unsaturated monomers comprise the following components in percentage by weight: 40 to 60 percent of acrylonitrile monomers, 10 to 20 percent of acrylic acid monomers, 10 to 20 percent of acrylamide monomers and 5 to 30 percent of cage type polysilsesquioxane monomers containing double-bond monofunctional groups; the double-bond monofunctional polyhedral oligomeric silsesquioxane monomer is used for participating in polymerization to form a microsphere shell. The foaming response speed of the microspheres can be remarkably improved, and the microspheres have high foam breaking temperature and high expansion performance.

The invention relates to a method for producing a polymer composition, in which a silane-modified polymer is polymerized by free-radical chain polymerization with an ethylenically unsaturated monomer and a further ethylenically unsaturated polymer having a free-radical photoinitiator group in a polyol or a prepolymer having terminal isocyanate groups, and to a polymer composition produced by this process. The invention also relates to a method for producing moisture-curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives on the basis of the polymer composition according to the invention. The invention also relates to moisture curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives produced by these methods.

The invention discloses silicon-based flame-retardant high-heat-resistance hydrocarbon resin as well as a preparation method and application thereof in preparation of a copper-clad plate, and belongs to the technical field of electronic resin synthesis. The preparation method of the silicon-based flame-retardant high-heat-resistance hydrocarbon resin comprises the following steps: S1, adding a first monomer, organic silicon and a catalyst into a reaction container, then adding dehydrated toluene and fully stirring, and after the reaction is finished, carrying out silica gel adsorption, filtration and reduced pressure distillation to obtain a silicon-containing unsaturated monomer; s2, sequentially adding a first monomer, a silicon-containing unsaturated monomer, a second monomer and a third monomer into a reaction container, then adding a solvent A and a cationic initiator, fully stirring, and washing and distilling after the reaction is finished to obtain the silicon-based flame-retardant high-heat-resistance hydrocarbon resin. The prepared silicon-based flame-retardant high-heat-resistance hydrocarbon resin has excellent dielectric property, heat resistance, mechanical strength and flame retardance, and can endow a copper-clad plate with excellent dielectric property, heat resistance, mechanical strength, flame retardance and the like when being applied to preparation of the copper-clad plate.

The invention relates to a low-odor two-component composition as well as a preparation method and application thereof, and belongs to the technical field of woodware seal primers. The low-odor double-component composition disclosed by the invention comprises a component A and a component B, wherein the component A comprises epoxy resin and epoxy silane; in the component A, the weight of the epoxy silane accounts for 0-60 wt% of the total weight of the epoxy resin and the epoxy silane; the component B comprises an addition product, and the addition product is a Michael addition product obtained by reacting an unsaturated monomer M and amino silane Q according to a molar ratio of 1: (1.6-2.4). The low-odor two-component composition disclosed by the invention is extremely low in odor, very fast in early-stage polishing property establishment, good and excellent in surface effect and flexibility, free of an organic solvent or only low in organic solvent content, and capable of being widely applied to a woodware seal primer as a composition so as to improve the performance of a woodware coating.

A sheet molding compound (SMC) composition formulation including a curable resin, such as unsaturated polyester of vinyl ester, in an ethylenically unsaturated monomer; a low profile additive, in a curable solvent; and an intumescent additive, such as melamine polyphosphate or ethylene diamine phosphate. An article formed of the SMC composition formulation experiences no more than a 100% increase in thickness as compared to an initial thickness of the article after exposure to a flame. The low profile additive is present in the composition and the intumescent additive is present in the composition. The resulting article has a char strength at 3 mm thickness of between 100 and 1,000 Newtons.

The invention belongs to the technical field of polyurethane, and particularly relates to multi-element synergistic flame-retardant polymer polyol and a preparation method thereof. The flame-retardant polyether polyol is prepared from phosphorus-halogen mixed flame-retardant basic polyether polyol, a halogen-containing flame-retardant vinyl unsaturated monomer, a silicon-containing flame-retardant vinyl unsaturated monomer, a nitrogen-containing modified polyether dispersant, styrene, acrylonitrile, an initiator and a chain transfer agent through reaction. The halogen-containing monomer introduced into the POP polymerization monomer directly participates in free polymerization, and cooperates with the flame-retardant elements in the basic polyether, so that the content of the flame-retardant elements in the POP can be effectively increased, and the flame retardance is improved. A vinyl silicon structure is added in a POP polymeric monomer, and a silicon element is introduced into a molecular chain, so that the flame retardance is improved, the hydrophobicity of POP can be improved, and the viscosity of the composite material is reduced. The macromolecular nitrogen-containing dispersing agent forms a nitrogen-phosphorus-bromine ternary synergistic flame-retardant system by adopting a DMC catalytic process and a polyurethane synthesis technology, so that the flame retardance of POP is further improved.

The present invention therefore relates to aqueous polymer latices of copolymers obtainable by aqueous emulsion polymerisation of ethylenically unsaturated monomers M, which comprise i. 5 to 90% by weight, in particular 10 to 70% by weight, especially 10 to 50% by weight, based on the total amount of monomers M, of a monomer M1, which is 1-hexyl acrylate; ii. 0 to 70% by weight, based on the total amount of monomers M, of at least one monomer M2, which is selected from C2-C5-alkyl esters of acrylic acid, except for tert-butyl acrylate, C7-C20-alkyl esters of acrylic acid and C5-C20-alkyl esters of methacrylic acid and mixtures thereof; iii. 5 to 70% by weight, based on the total amount of monomers M, of at least one monomer M3, which is selected from tert-butyl acrylate, C1-C4-alkyl esters of methacrylic acid, C5-C20-cycloalkyl esters of acrylic acid, C5-C20-cycloalkyl esters of methacrylic acid, C5-C20-cycloalkylmethyl esters of acrylic acid, C5-C20-cycloalkylmethyl esters of methacrylic acid, where cycloalkyl in the aforementioned monomers is mono-, bi- or tricyclic and where 1 or 2 nonadjacent CH2 moieties of cycloalkyl may be replaced by oxygen atoms and where cycloalkyl may be unsubstituted or carry 1, 2, 3 or 4 methyl groups, and monovinyl aromatic monomers, methylene-gamma-butyrolactone and mixtures thereof; where the total amount of monomers M1 and M2 is in the range from 10 to 90% by weight, based on the total amount of ethylenically unsaturated monomers M, and where the total amount of monomers M1, M2 and M3 is at least 90% by weight, based on the total amount of ethylenically unsaturated monomers M. The present invention also relates to a process for producing the aqueous polymer latices of the present invention. The present invention also relates to the use of these polymer latices as binders in waterborne coating compositions and waterborne adhesive compositions, in particular as binders in waterborne coating compositions.

The application belongs to the technical field of high polymer materials, and particularly relates to an ion conductive hydrogel, a sensor and a preparation method and application thereof. The ion conductive hydrogel comprises a double-network hydrogel and ion salts and alcohol dispersed in the double-network hydrogel; the first network of the double-network hydrogel is formed by cross-linking of sodium alginate, and the second network is formed by radical polymerization of unsaturated monomers. The second network is formed by radical polymerization of unsaturated monomers, and the double-network hydrogel is formed by cooperation of sodium alginate, so that the ion conductive hydrogel has excellent mechanical properties. The ion salts are added in the double-network hydrogel, and especially, an alcohol / water binary solvent system is introduced. Due to strong ion hydration and strong hydrogen bond interaction between water molecules and alcohol, ice crystallization is inhibited, so that the hydrogel still has good flexibility and conductivity below zero degrees.

The invention relates to a mud-resistant slump-retaining polycarboxylic acid water reducer and a preparation method thereof. The polycarboxylic acid water reducer is prepared from the following raw materials: 80-100 parts of polyether macromonomer; 1-2 parts of a rigid unsaturated monomer; 1-2 parts of a crosslinking monomer; 2-3 parts of an unsaturated sulfonic acid monomer; 10 to 15 parts of unsaturated acid; 0.5-2 parts of an oxidizing agent; 0.5-2 parts of a reducing agent; and 1-2 parts of a chain transfer agent. According to the invention, ethylene glycol monovinyl ether polyoxyethylene ether is adopted as a polyether monomer, a cross-linking monomer itaconic acid polyethylene glycol ester is introduced to form a cross-linked network-shaped molecular structure, and rigid structures such as (4-vinyl phenyl) trimethoxysilane are introduced, so that friction layer adsorption of clay is avoided, adsorption sites on the surface of the clay are reduced, and the adhesion of the clay is improved; the competitive adsorption effect of clay on the polycarboxylate superplasticizer is weakened, and the mud resistance and the slump loss resistance are greatly improved.

The invention relates to a non-fluorine binder and application thereof in the field of secondary batteries, and belongs to the technical field of battery binders. The technical problem to be solved by the invention is to provide the non-fluorine binder which has good solubility in NMP (N-Methyl Pyrrolidone). The binder comprises modified resin, and the modified resin is formed by polymerizing thermoplastic resin, a functional monomer and a nitrile group-containing unsaturated monomer. The binder has normal-temperature solubility in an NMP solvent, can improve the high-temperature tolerance of a material in a carbonic ester electrolyte and the binding force to a metal foil, can be applied to the fields of lithium ion battery edge coating protection glue, conductive dispersion glue and positive and negative electrode binders, can be independently used, can also be used in cooperation with other binders, and can be applied to the fields of lithium ion battery edge coating protection glue, conductive dispersion glue and positive and negative electrode binders. The fluorine resin has outstanding price and environmental advantages, and can replace traditional fluorine resin to be applied to lithium ion batteries.

The invention provides a viscosity reduction type concrete super plasticizer and a preparation method and application thereof.The super plasticizer is solid and is prepared from an unsaturated monomer a, an unsaturated monomer b and an unsaturated monomer c through free radical polymerization under the microwave condition, the unsaturated monomer a is methacrylic acid or methyl alkenyl phosphonic acid monomer, and the unsaturated monomer b is methacrylic acid or methyl alkenyl phosphonic acid monomer. The unsaturated monomer b is a monomer containing a rigid ring, the rigid ring is an aromatic ring or an imidazole ring or a pyridine ring, and the unsaturated monomer c is an unsaturated polyether monomer containing a benzene ring. A methyl group and a rigid ring group are introduced into a main chain of the super plasticizer, so that the rigidity of a polymer is improved, the hydrophobicity is increased, the conformation of the polymer is changed, and a relatively thick water film layer is formed on the surface of cement particles; meanwhile, a branched structure side chain is introduced into the super plasticizer, so that the molecular size of the polymer can be remarkably increased, the steric hindrance effect of the polymer is more outstanding, the dispersing capacity is good, the thickness of a water film layer on the surface of cement can be increased, and the viscosity of concrete is further reduced.

The present invention relates to a biodegradable polymer composition formed by waterborne radical emulsion polymerization of monomers selected from ethylenically unsaturated monomers characterized in that, the polymer composition is composed of at least two different populations of particles, said populations differing in average particle size value by at least a factor of 1.5, wherein (a) a population P1 is constituted by particles having an average particle size of greater than 250 nanometers, said particles being constituted of polymer chains predominantly built of ethylenically unsaturated monomers, further comprising 0.5 to 50% by C weight of oligomer lactide 2-hydroxyethyl, methacrylate terminated macromonomer, based on the total weight of the monomers, and (b) a population P2, distinctive of P1 by average particle size value, is constituted by particles having an average particle size of less than or equal to 250 nanometers, said particles being constituted of polymer chains predominantly built of ethylenically unsaturated monomers, further comprising 0.5 to 50% by weight of oligomer lactide 2-hydroxyethyl, methacrylate terminated macromonomer, based on the total weight of the monomers, wherein said two different populations jointly constitute at least 70% by weight, preferably 90% by weight, of the total polymeric content within said composition.

The invention relates to the technical field of lithium metal batteries, and discloses a silane coupling agent modified Mxene-based solid-state polymer electrolyte, a solid-state lithium battery and a preparation method of the solid-state lithium battery. The silane coupling agent modified Mxene-based solid polymer electrolyte is prepared by uniformly mixing the raw materials and then heating and curing; the raw materials comprise the following components in percentage by weight: 0.2-1.6 wt% of silane coupling agent modified Mxene; 8-15 wt% of a lithium salt; 3 to 6 wt% of an acrylate unsaturated monomer; 0.01 to 0.05 wt% of an initiator; and the balance of solvent. According to the invention, the two-dimensional material MXene is introduced, so that the growth of lithium dendrites is effectively inhibited; abundant functional groups on the surface of MXene and a polymer skeleton generate a synergistic effect, rapid migration of Li < + > can be promoted, and a film is formed at an interface of a positive electrode and a negative electrode, so that the solid-state lithium battery can stably operate under extreme conditions of high and low temperatures, high magnification and the like; the MXene is subjected to surface modification through siloxane, so that the compatibility of the MXene in an electrolyte precursor solution can be improved, and the electronic conductivity of the MXene can be remarkably reduced, thereby enhancing the safety of the battery.

A pigment dispersion liquid containing a copolymer (A) having a first segment (a1) derived from a nitrogen-containing polymerizable unsaturated monomer having a tertiary amino group and / or a nitrogen-containing heterocyclic group, and a second segment (a2) derived from a polymerizable unsaturated monomer having a polyoxyalkylene chain, a hydrocarbon group-containing acidic compound (B), a pigment (C), and an aqueous solvent (D), and a hydrocarbon group-containing acidic compound (B) having a C5-23 saturated or unsaturated hydrocarbon group (b1) and at least one acid group (b2) selected from the group consisting of a carboxyl group, a phosphate group, a sulfonic acid group, and a phenol group.

The invention belongs to the technical field of oilfield chemistry, and particularly provides an environment-friendly oil-phase-free clean nano-microsphere and a preparation method of the environment-friendly oil-phase-free clean nano-microsphere. The nano microsphere is prepared from the following raw materials: 60 to 90 parts of an oil-free phase solvent, 50 to 70 parts of acrylamide, 25 to 35 parts of an anionic unsaturated monomer, 9 to 15 parts of a functional monomer, 3 to 7 parts of a cosolvent, 1 to 2 parts of modified nano silicon dioxide, 0.2 to 0.4 part of an initiator, 0.005 to 0.02 part of a cross-linking agent and 300 to 400 parts of distilled water. The nano-microsphere disclosed by the invention is good in expansion performance, excellent in high temperature resistance and salt resistance, excellent in deep profile control and displacement capacity, free of an oil-phase solvent, environment-friendly and pollution-free, and important support is provided for green transformation of oilfield exploitation.

The present invention provides a composition for forming a high-gloss coating film which exhibits good antifouling performance in spite of a relatively slow dissolution rate of the coating film, and which does not cause a coating film abnormality such as a crack even after being immersed in seawater for a long period of time.　The present invention specifically provides an antifouling coating composition which contains a copolymer A, a rosin ester B, and an antifouling agent C, wherein: the copolymer A is a copolymer of a monomer (a1) and an ethylenically unsaturated monomer (a2) other than the monomer (a1); the monomer (a1) is represented by general formula (1); and the rosin ester B is a reaction product of a polyhydric alcohol (b1) and rosin or a derivative thereof (b2).

Described herein is a polyester-polyurethane-poly(meth)acrylic hybrid dispersion obtainable by esterifying at least one polyurethane containing carboxyl groups, the at least one polyurethane having an acid number of more than 200 mg KOH / g to 400 mg KOH / g and at least one or more terminal carboxyl groups; with at least one polyester containing hydroxyl groups, the polyester having a hydroxyl number of 50 mg KOH / g to 300 mg KOH / g, to obtain a polyester-polyurethane; followed by polymerizing ethylenically unsaturated monomers at least including (meth)acrylic monomers by radical polymerization in the presence of the polyester-polyurethane where one or more solvents are present and / or employed, thereby obtaining the polyester-polyurethane-poly(meth)acrylic hybrid dispersion.

The invention relates to the technical field of 3D printing, in particular to hydrogel ink and a hydrogel photocuring 3D printing method. The hydrogel ink for 3D printing provided by the invention comprises the following raw materials in percentage by mass: 40-80% of an unsaturated monomer; 0.01%-3% of a photoinitiator; 20%-60% of a phase separation solvent; the phase separation solvent is a good solvent of an unsaturated monomer, and is a poor solvent of a polymer formed by polymerizing the unsaturated monomer. The phase separation solvent is used for dissolving the unsaturated monomer, and in the 3D printing process, the phase separation solvent can separate polymeric macromolecules formed by polymerization of the unsaturated monomer induced by the photoinitiator, so that the molded material obtained through printing is high in modulus, and the printing precision is improved.

Inhibitor compositions for abating undesirable emulsion polymerization during processing of hydrocarbon stream laden with reactive vinylic monomers are provided. The polymerization inhibitor compositions include at least a first inhibitor compound having a stable nitroxide radical and a second inhibitor including phenylenediamine. Methods of inhibiting the polymerization of monomers using the compositions of the disclosure are also provided. The methods of inhibiting polymerization of monomers include a step of adding a composition of the disclosure to a process stream. The process stream includes an ethylenically unsaturated monomer that is suspended in the bulk-phase and highly polar solvents as distractive distillation solvents.

Provided is a novel method for producing water-absorbent resin particles with which it is possible to obtain water-absorbent resin particles having excellent high absorption performance (in particular, physiological saline water retention, physiological saline water absorption under a load of 4.14 kPa, and 5-minute value characteristics of non-pressurized DW). The method for producing water-absorbent resin particles is a method for producing water-absorbent resin particles by subjecting a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization using radical polymerization initiators, at least one of the radical polymerization initiators being an azo compound, the reversed-phase suspension polymerization comprising two or more polymerization steps, in the first-stage polymerization step, (a) 0.01 mmol or more and 0.11 mmol or less of an internal crosslinking agent is used with respect to 1 mol of a water-soluble ethylenically unsaturated monomer used during the first-stage polymerization; in the second-stage polymerization step, (b) 0-0.042 mmol of the internal crosslinking agent is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization, (c) 0.38 mmol or less of the azo compound is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization, and (c) 0.38 mmol or less of the azo compound is used per 1 mol of the water-soluble ethylenically unsaturated monomer used during the second-stage polymerization. A surface crosslinking step is provided after the polymerization step subsequent to the second step.

The invention discloses an antibacterial nanofiber hemodialysis membrane and a preparation method thereof, and relates to the technical field of dialysis membranes, and the preparation method comprises the following steps: mixing a chitosan derivative, heparin, dopamine, an unsaturated monomer and an initiator in a DMF / phosphate buffer mixed solution to obtain a surface treating agent; taking the polyethersulfone nanofiber membrane as a supporting layer, dipping in a surface treating agent, and performing UV irradiation to form a functional layer, thereby obtaining the dialysis membrane. The preparation method comprises the following steps: compounding phenanthroline cerium triacrylate hybridized CeO2 with N-vinyl pyrrolidone, sodium p-styrenesulfonate and lauryl methacrylate to obtain an unsaturated monomer, compounding the unsaturated monomer with a chitosan derivative, heparin and dopamine to prepare a surface treating agent, impregnating a polyether sulfone nanofiber membrane, and carrying out irradiation curing to form a functional layer. The prepared hemodialysis membrane has efficient anticoagulation and broad-spectrum antibacterial properties, high permeability, low protein adsorbability and long-term stability.

The invention provides an ultrahigh-temperature-resistant water-based drilling fluid filtrate reducer as well as a preparation method and application thereof. The filtrate reducer is obtained by copolymerization of unsaturated monomers. In the molecular structure of the filtrate reducer, the main chain is a C-C bond, the side chain is a cyclic functional group with relatively strong rigidity, an amide group with strong adsorbability and a sulfonic acid group with strong hydrophilicity, the bond energy is relatively large, and the filtrate reducer is not easy to decompose and lose efficacy in an ultrahigh-temperature and high-salt calcium environment. Due to lattice substitution, the surfaces of the clay particles are negatively charged, and the filtrate reducer is adsorbed on the surfaces of the clay particles under the action of static electricity and hydrogen bonds to form a spatial network structure of the clay particles and filtrate reducer macromolecules, so that the hydration film thickness of the clay particles, Zeta potential and repulsive force among the clay particles are increased, the clay particles are not easy to coalesce, and the viscosity of the filtrate reducer is increased. Certain dispersity is kept in the drilling fluid, and clay particles with small particle size are formed, so that a compact and low-permeability filter cake is formed under the action of pressure difference, and the filter loss of the drilling fluid is effectively reduced.

The present invention relates to aqueous polymer dispersions, which are obtainable by free radical aqueous emulsion polymerization of ethy lenically unsaturated monomers M comprising a) 0.5 to 5.0% by weight, based on the total weight of monomers M, of a combination of a1) at least one monomer Ma1, selected from hydroxy alkyl C2-C6 (meth)acrylates; a2) at least one monomer Ma2, selected from monoethylenically unsaturated monosulfonic acids having 2 to 10 carbon atoms and the salts thereof; b1) 50 to 75,45% by weight, based on the total weight of monomers M, of at least one monomer Mb1, which is selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water of at most 60 g / L at 25°C and 1 bar, and whose homopolymers have a glass transition temperature Tg of at least 50°C; b2) 24 to 49,45% by weight, based on the total weight of monomers M, of at least one monomer Mb2, which is selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water of at most 60 g / L at 25°C and 1 bar, and whose homopolymers have a glass transition temperature Tg of at most 40°C; c) optionally, 0.05 to 2.0% by weight of at least one crosslinking monomer Me; whereby the aqueous polymer dispersion is substantially free of monoethylenically unsaturated carboxylic acids, and whereby the aqueous emulsion polymerization is carried out optionally in the presence of a chain transfer compound.

The invention belongs to the technical field of petroleum industry, and relates to a reverse demulsifier as well as a preparation method and application thereof. The reverse demulsifier comprises a structural unit derived from a cationic unsaturated monomer, a structural unit derived from an acrylamide monomer, a structural unit derived from a polyether monomer with a double-bond-containing end group and a structural unit derived from a hydrophobic monomer with a double-bond-containing end group. Based on the total weight of all the structural units in the reverse demulsifier, the content of the structural unit derived from the cationic unsaturated monomer is 30-65 wt%, the content of the structural unit derived from the acrylamide monomer is 10-45 wt%, the content of the structural unit derived from the polyether monomer with the end group containing double bonds is 5-22 wt%, and the content of the structural unit derived from the polyether monomer with the end group containing double bonds is 5-20 wt%. The content of the structural unit derived from the hydrophobic monomer containing double bonds at the end group is 2-15 wt%. The reverse demulsifier disclosed by the invention has the characteristics of high dehydration speed, clear dehydrated water, suspended solid particles and low oil content.

The invention relates to the technical field of concrete admixtures, and particularly discloses a concrete super-plasticity-retaining retarder and a preparation method thereof. The concrete super-plasticity-retaining retarder is prepared from 100 to 200 parts of carboxyl / phosphonic acid group-containing unsaturated polyether monomer, 50 to 150 parts of phosphonic acid group-containing unsaturated monomer, 20 to 80 parts of acrylic acid, 1 to 5 parts of ammonium persulfate, 1 to 5 parts of ascorbic acid, 5 to 15 parts of chain transfer agent, 5 to 15 parts of nonionic polyurethane thickener, 1 to 2 parts of preservative and 600 to 800 parts of deionized water. According to the invention, the retarding effect and the stability when the retarder is used together with different types of water reducing agents can be improved.

The invention provides a micro-crosslinking anti-gas-channeling agent as well as a preparation method and application thereof. The micro-crosslinking anti-gas-channeling agent is prepared from the following raw materials: polybutadiene, styrene, a modified monomer and a crosslinking agent, the modified monomers comprise sulfonic acid group-containing unsaturated monomers and salts thereof, and carboxyl group-containing unsaturated monomers and salts thereof; based on 100% of the total molar weight of the polybutadiene, the styrene and the modified monomer, the molar percentage content of the modified monomer is 22-42%. The micro-crosslinking anti-gas-channeling agent has an excellent anti-gas-channeling effect, is resistant to high temperature and salt, and can obviously improve the anti-gas-channeling effect of cement paste under the condition of a small addition amount, so that the cement paste comprising the micro-crosslinking anti-gas-channeling agent is good in anti-gas-channeling effect, wide in applicable temperature range, and suitable for various types of well cementation; and for well cementation of a high-risk gas well with serious gas channeling potential, a good gas channeling prevention effect is also achieved.

The present invention provides a photoreactive resin composition for imprinting, a hardened product, and an optical element, which have high transmittance, low thermal expansion coefficient, low water absorption, high hardness, and high Young's modulus. The photoreactive resin composition for imprinting includes resin (A) having a weight average molecular weight of 1,000 to 50,000 and two or more ethylenic polymerizable groups, ethylenic unsaturated monomer (B), photoinitiator (C), solvent (D), and hydrophobic oligomer (E).

To provide an antifouling coating composition capable of forming a coating film that combines bioresistance and contamination resistance without relying on photocatalytic semiconductor materials.SOLUTION: There is provided an antifouling coating composition containing resin (A) having a weight-average molecular weight of 10,000 or more and 200,000 or less, which comprises units derived from monomer (a1), units derived from monomer (a2), and units derived from monomer (a3). The monomer (a1) is one or more selected from the group consisting of alkyl acrylate and alkyl methacrylate, the monomer (a2) is an ethylene-unsaturated monomer having one or more hydrophilic functional groups, and the monomer (a3) is a monomer having one or more alkoxysilyl groups.SELECTED DRAWING: None

A binder composition for a non-aqueous secondary battery electrode contains a polymer X that includes an acidic group-containing monomer unit in a proportion of not less than 3 mass % and not more than 20 mass % and a repeating unit derived from an unsaturated monomer A in a proportion of not less than 5 mass % and less than 50 mass %. The unsaturated monomer A has a solubility in water of not less than 1 g / 100 mL and not more than 15 g / 100 mL and has a glass-transition temperature of 40° C. or lower.

The invention discloses a high-conductivity high-adhesion automobile bumper primer and a preparation method thereof, and belongs to the technical field of automobile bumper primers. The high-conductivity and high-adhesion automobile bumper primer is prepared from the following raw material components: polar modified chlorinated polypropylene, waterborne acrylic resin, a dispersing agent, a flatting agent, a defoaming agent, titanium dioxide, superfine precipitated barium sulfate, fumed silica, conductive filler and deionized water. The polar modified chlorinated polypropylene is obtained by carrying out free radical polymerization on a polar unsaturated monomer and chlorinated polypropylene; the polar unsaturated monomer is prepared from acrylic acid, methyl methacrylate, hydroxyethyl acrylate and 3-allyl-2-hydroxybenzaldehyde; the water-based acrylic resin is obtained by carrying out copolymerization on hydroxyethyl methylacrylate, hydroxyethyl acrylate, methacrylamide and 2, 5-divinyl benzene-1, 4-diamine; the conductive filler adopts carbon nanotubes, graphene and conductive carbon black; the high-conductivity and high-adhesion automobile bumper primer prepared by the preparation method disclosed by the invention is excellent in mechanical property and relatively good in conductivity.