257 results about "Unsaturated monomer" patented technology

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.

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 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.

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.

The present invention relates to an organic peroxide emulsion comprising: at least one organic peroxide; at least one emulsifier comprising at least one non-ionic surfactant comprising at least one fatty chain and / or a protective colloid agent; a combination of two or more anti-gelling agents comprising not more than 9.5 wt% of a first anti-freezing agent, at least one second anti-freezing agent, relative to the total weight of the emulsion of ethanol; and water. The present invention also relates to a process for preparing such an emulsion, the use of such an emulsion for the polymerization or copolymerization of one or more ethylenically unsaturated monomers, and a halogenated vinyl polymer obtained by using such an emulsion.

Ethylene, alpha olefins, and other olefinically unsaturated monomers may be polymerized under fluidized bed polymerization reaction conditions in the presence of a Ziegler-Natta catalyst. A recycle stream featuring an induced condensing agent (ICA) comprising isobutane may increase catalyst productivity while maintaining quality of the polymer product, particularly when the recycle stream is delivered to a reactor containing the fluidized bed under conditions suitable to form a condensed or super-condensed mode in the recycle stream. The recycle stream may comprise unreacted olefinic monomers, and isobutane or a mixture of isobutane and isopentane.

The invention belongs to the technical field of photoresist materials, and particularly relates to organic silicon modified dry film photoresist resin and a preparation method and application thereof.The organic silicon modified alkali-soluble acrylic resin is a copolymer prepared from raw materials including the following monomers through free radical copolymerization: a carboxyl-containing olefinic bond type unsaturated monomer providing alkali solubility; the acrylate monomer provides film-forming property and flexibility; the acrylate organosilicon monomer CH2 = C (R1)-C (O)-O-(CH2) n-Si (R2) 3, wherein R1 represents H or CH3; r2 represents methyl or phenyl; n is an integer from 2 to 6; wherein based on the total weight of the copolymer, the content of the structural unit of the acrylate organosilicone monomer in the copolymer is 0.001 wt%-1wt%. Organic silicon chain segments are chemically bonded to a resin framework through copolymerization modification, the compatibility problem of physical blending is solved, and permanent and stable improvement of interface properties is achieved.

Provided are molded solid particles made of a thermoplastic copolymer having a silicon-containing organic group, which has excellent solubility in solvents acceptable for cosmetic materials and excellent handling properties, and can be mass-produced by an industrial production process, as well as uses and production methods thereof. The molded solid particles comprise a thermoplastic copolymer made by copolymerizing: (a1) an unsaturated monomer having one radical polymerizable organic group and one silicon-containing organic group in the molecule; and (a2) an unsaturated monomer having one radical polymerizable vinyl group in the molecule, which is different from component (a1). The major axis of the particles is less than 10 mm. Also provided are a use of the molded solid particles, and a production method of the molded solid particles including a stranding step and a cutting step.

It is provided that a particulate hydrophilic resin that can be produced under mild conditions, and that has a small load on the environment. A resin particle comprising a crosslinked structure in which at least one of monomers represented by the following general formula (1) and a polyfunctional ethylenically unsaturated monomer are crosslinked,wherein R1 represents an alkyl group having 1 to 4 carbon atoms, a hydrogen atom, an alkali metal atom, or an ammonium.

The invention belongs to the technical field of concrete, and discloses an anti-mud viscosity reduction type polycarboxylic acid water reducer as well as a preparation method and application thereof. The anti-mud viscosity reduction type polycarboxylic acid water reducer is prepared from the following raw materials in parts by weight: 150 to 300 parts of polyether monomer, 25 to 50 parts of unsaturated monomer, 5 to 15 parts of functional monomer, 3 to 8 parts of temperature-sensitive monomer, 0.8 to 1.5 parts of chain transfer agent, 0.5 to 5 parts of oxidant and 0.1 to 0.5 part of reducing agent. The functional monomer is a zwitterionic hybrid monomer with a boric acid group and a betaine group. According to the invention, the zwitterionic hybrid monomer with a boric acid group and a betaine group is added into the water reducing agent as a functional monomer, and N-isopropylacrylamide is added as a temperature-sensitive monomer, so that the mud resistance and viscosity reduction performance of the water reducing agent are realized.

A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The separator includes one or more fiber layers wherein at least one of the fiber layers includes a fiber network of fibers comprising a first copolymer, or at least one of the fiber layers includes a network of core-shell type fibers comprising a first copolymer. The first copolymer includes a copolymer of a monomer mixture, the copolymer including: a first structural unit including a unit derived from an aromatic unsaturated monomer; a second structural unit derived from a (meth) acrylic monomer, the (meth) acrylic monomer including an alkyl group having four or more carbon atoms in the main chain in an ester moiety; and a third structural unit derived from a sulfonic acid group-containing monomer.

Provided is a novel method for producing water-absorbent resin particles having both gel stability with respect to iron-containing artificial urine, gel stability with respect to artificial urine over a long period of time, and yellowing resistance. A method for producing water-absorbent resin particles, the method comprising: a step for obtaining polymer particles by polymerizing a water-soluble ethylenically unsaturated monomer; and a surface crosslinking step for applying a surface crosslinking to the polymer particles, in which a phosphonic acid-based chelating agent is added to the polymer particles having a water content of 5-100 mass% before and / or after the surface crosslinking step, and the phosphonic acid-based chelating agent is added to the polymer particles having a water content of 5-100 mass%. The addition amount of the phosphonic acid-based chelating agent is 0.055-0.6 parts by mass (inclusive) per 100 parts by mass of the water-soluble ethylenically unsaturated monomer.

There is provided an aqueous personal care rinse-off formulation, the aqueous personal care rinse-off formulation comprising: a dermatologically acceptable vehicle; a dermatologically acceptable cleansing surfactant; and a gradient polymer comprising: 5%-35% by weight of structural units of (meth) acrylic acid; 35 wt% to 65 wt% of a structural unit of C1-8 alkyl (meth) acrylate; gt; 10% to 30% by weight of structural units of a dedicated associative monomer having structure I wherein R1 is a linear saturated C12-26 alkyl group; wherein R2 is hydrogen or a methyl group, and wherein n is from 10 to 30; 0.01 wt% to 2 wt% of a structural unit of a polyethylenically unsaturated monomer; wherein the gradient polymer comprises lt; 0.05% by weight of structural units of sulfonated monomers; wherein the polymer comprises lt; 0.02% by weight of structural units of a monomer having structure II wherein R3 is-H or-CH3; r4 is-H or a-C1-4 alkyl group; r5 is a-C1-4 alkyl group; a is 0 to 50; b is 0 to 20; c is 0 to 50; a + c is 1 to 100 and d is 1 to 4; and wherein the gradient polymer has a gradient polymer morphology.

The application belongs to the technical field of adhesives, and particularly relates to a motor insulation coating adhesive, which is composed of the following components and component weight parts according to weight parts: 15-30 parts of epoxy resin, 2-20 parts of toughening modified epoxy resin, 0-12 parts of epoxy diluent, 0.1-18 parts of curing agent, 40-70 parts of inorganic filler, 0.1-1.5 parts of pigment, 0-3 parts of thickening agent, 0-10 parts of unsaturated oligomer, 0-15 parts of unsaturated monomer, 0-3 parts of adhesion promoter, 0.5-2 parts of curing accelerator, 0-1 parts of coupling agent, and 0-0.5 parts of defoaming agent; wherein the epoxy resin is one or several of aliphatic epoxy resin, alicyclic epoxy resin, aromatic epoxy resin, naphthalene ring epoxy resin or high-functionality epoxy resin with a functionality of 3 or 4. The motor insulation coating adhesive provided by the application not only has good insulation performance, but also has the characteristics of high adhesion, high reliability, high toughness and the like, and still maintains a volume resistivity of >10 14 Ω*cm in a high-temperature working environment (>160 DEG C).

A high-pressure polymerization system having a) a polymerization reactor and b) a reactor blow down system having b1) a reactor blow down vessel, having a circular design over a major portion P having a L / D-ratio in the range from 1.75 to 10.0 and containing an aqueous quenching medium, b2) a release line connecting the polymerization reactor with the reactor blow down vessel and having an outlet located above a maximum level for the aqueous quenching medium, b3) a first emergency valve in the release line to open and close fluid communication between the polymerization reactor and the reactor blow down system, and wherein the release line outlet has a joining piece having an angle (α) between the central axis and a tangent at the reactor blow down vessel in the range from 5° to 70° and the reactor blow down vessel has a vent stack containing a constricted section.

The present invention concerns an aqueous radiation-curable polyurethane acrylate dispersion comprising: a) a polyurethane acrylate polymer which is the reaction product of: i) from 10 wt.% to 50 wt.% of an isocyanate monomer; ii) from 5 wt.% to 20 wt.% of a polyunsaturated monomer or polyunsaturated oligomer, which has an iodine value of at least 50 g of I2 / 100g of respectively polyunsaturated monomer or polyunsaturated oligomer, and at least one hydroxyl functional group; iii) from 10 wt.% to 55 wt.% of an acrylate functional oligomer which contains at least one (meth)acrylate group and at least one isocyanate-reactive group; and iv) from 1 wt.% to 10 wt. % of a dispersing agent which contains at least one isocyanate-reactive group and at least one group having a hydrophilizing action; dispersed in b) an aqueous continuous phase; and a coating composition and kit-of-parts with a drying agent; and a coated substrate.

A separator for a rechargeable lithium battery includes a porous substrate and a coating layer on at least one surface of the porous substrate. The coating layer includes a binder, the binder including a copolymer, the copolymer including: a first structural unit including a unit derived from an aromatic unsaturated monomer; a second structural unit derived from a (meth) acrylic monomer containing an alkyl group having 4 or more carbon atoms in the main chain of the ester moiety; and the third structural unit is derived from a sulfonic acid group-containing monomer. The first structural unit is included in an amount in a range of about 5 mol% to about 80 mol%, the second structural unit is included in an amount in a range of about 10 mol% to about 40 mol%, and the third structural unit is included in an amount in a range of about 5 mol% to about 80 mol%, based on 100 mol% of the copolymer.

5 to 35% by weight of a structural monomer unit of a (meth)acrylic acid monomer, 35 to 65% by weight of a structural monomer unit of a C 1-8 alkyl (meth)acrylate monomer, and more than 10 to 30% by weight of a structure (II): [Chemical Formula 1] JPEG2026521909000033.jpg28170 (wherein R 1 is selected from linear saturated C 12-26 alkyl groups, R 2 is selected from hydrogen and methyl groups, and n is 10 to 30) of a structural monomer unit of a special associative monomer, 0.01 to 2% by weight of a structural unit of a polyvalent ethylenically unsaturated monomer, and [[ID=1~5]] a gradient polymer containing <0.05% by weight of a structural monomer unit of a sulfonated monomer and <0.02% by weight of a structure (II):[[ID=[]] 【化2】 [[ID=[]]JPEG2026521909000034.jpg36170 (wherein each R 3 is selected from -H and -CH3, R 4 / / 这里的“R 4 は、-H及び-C 1-4 アルキル基から選択され”,推测原文可能有误,这里按推测修正为“is selected from -H and -C<000000]]alkyl groups”is selected from -H and -C 1-4 alkyl groups, R 5 is selected from -C 1-4 alkyl groups, a is 0 to 50, b is 0 to 20, c is 0 to 50, a + c is 1 to 100, and d is 1 to 4) of a monomer having a structural unit, and a gradient polymer having a gradient polymer form is provided.

Thus, the present invention relates to an aqueous polymer latex of a copolymer obtained by aqueous emulsion polymerization of an ethylenically unsaturated monomer M, iv. 5 to 90% by weight, in particular 10 to 70% by weight, in particular 10 to 50% by weight, based on the total amount of monomer M, of monomer M1 which is 1-heptyl acrylate, v. 0 to 70% by weight, based on the total amount of monomer M, of C2-C6-alkyl esters of acrylic acid excluding tert-butyl acrylate, C8-C 20 -alkyl esters of acrylic acid and C5-C 20 -alkyl esters of methacrylic acid, and at least one monomer M2 selected from mixtures thereof, vi. 5 to 70% by weight, based on the total amount of monomer M, of tert-butyl acrylate, C1-C4-alkyl esters of methacrylic acid, C5-C 20 -cycloalkyl esters of acrylic acid, C5-C 20 -cycloalkyl esters of methacrylic acid, C5-C 20 -cycloalkylmethyl esters of acrylic acid, C5-C 20 -cycloalkylmethyl esters of methacrylic acid (the cycloalkyl in the above monomers is monocyclic, bicyclic or tricyclic, one or two non-adjacent CH2 moieties of the cycloalkyl may be replaced by oxygen atoms, the cycloalkyl may be unsubstituted or may have 1, 2, 3 or 4 methyl groups), and at least one monomer M3 selected from monovinyl aromatic monomers, methylene-gamma-butyrolactone, and mixtures thereof, comprising, where the total amount of monomers M1 and M2 ranges from 10 to 90% by weight based on the total amount of ethylenically unsaturated monomer M, and the total amount of monomers M1, M2 and M3 is at least 90% by weight based on the total amount of ethylenically unsaturated monomer M, relates to an aqueous polymer latex. The present invention also relates to a process for producing the aqueous polymer latex of the present invention. The present invention also relates to the use of these polymer latexes as binders in aqueous coating compositions and aqueous adhesive compositions, particularly as binders in aqueous coating compositions.

The invention relates to an aqueous polymer dispersion and its preparation. The dispersion comprises a styrene acrylate polymer, which is obtainable by free-radical polymerisation of 1-90 weight-% of monomer (a), which comprises at least one optionally substituted styrene; 10-99 weight-% of monomer (b), which comprises at least one alkyl (meth)acrylate, and 0-9 weight-% of monomer (c), which comprises at least one ethylenically unsaturated monomer, which is different from monomer (b). The polymerisation is conducted in a polymerisation medium comprising a cationic prepolymer, which is obtainable by free radical polymerisation of at least 10-55 weight-% of a monomer (i), which comprises at least one ethylenically unsaturated quaternary and / or tertiary amine, 35-90 weight-% of a monomer (ii), which comprises at least one optionally substituted styrene, and 0-55 weight-% of a monomer (iii), which comprises at least one alkyl (meth)acrylate. The oligomer content in the polymer dispersion is ≤1.4 weight-%, calculated from the dry polymer content.

A separator for a rechargeable lithium battery includes a porous substrate, and a coating layer located on at least one surface of the porous substrate. The coating layer includes a binder, the binder includes a copolymer including a first structural unit including a unit derived from an aromatic-based unsaturated monomer; a second structural unit derived from a (meth)acrylic monomer containing an alkyl group with 4 or more carbon atoms in the main chain of the ester moiety; and a third structural unit derived from a sulfonic acid group-containing monomer. Based on 100 mol % of the copolymer, the first structural unit is included in an amount of about 5 mol % to about 80 mol %, the second structural unit is included in an amount of about 10 mol % to about 40 mol %, and the third structural unit is included in an amount of about 5 mol % to about 80 mol %.

An electrode useful in energy storage devices comprises a current collector and an active layer on the current collector, wherein the active layer comprises electrode active particles, electrically conducting material and a binder wherein the binder comprises a copolymer that comprises a first repeat unit and a second repeat unit; where the first repeat unit is derived from the polymerization of a first monomer which is ethylenically unsaturated monomer having a hydrophilic pendant group and the second repeat unit is derived from the polymerization of a second monomer having ethylenic unsaturation.

Provided is a composition for forming a high-gloss coating film which, despite having a comparatively slow coating film dissolution rate, exhibits good long-term antifouling performance, and in which coating film anomalies such as cracks do not occur even after long-term immersion in seawater.　The present invention provides an antifouling coating composition comprising a copolymer A, a rosin ester B, another rosin component C, and an antifouling agent D, 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); the rosin ester B is a reaction product of a polyalcohol (b1) and a rosin or rosin derivative (b2); and the other rosin component C is a rosin or rosin derivative, or a metal salt of a rosin or rosin derivative.

The invention discloses a comonomer composition and method for constructing a tunable microphase coating. The composition comprises a hydrophobic phase monomer, an acidic hydrophilic monomer containing carboxyl, an ionizable monomer containing tertiary amino, a monomer containing sulfonic acid group or sulfonate group and a delayed locking monomer containing alkoxy silane group, the components are vinyl unsaturated monomers capable of being subjected to free radical copolymerization. Through the collaborative design of the monomers, the obtained copolymer forms a microphase structure composed of a hydrophobic phase domain and an ionic association high-polarity phase domain in the film forming process, and the alkoxy silane group is subjected to a hydrolytic condensation reaction in the presence of water to delay locking of the microphase structure. The coating has good construction stability under the condition of high solid content, and can realize tuning of a microphase structure through ion strength, humidity or pH change after film formation, so that independent adjustment of various coating properties is realized, and the coating has good feasibility and application value.

The invention provides a high-temperature thermal expansion microsphere which comprises an olefinic unsaturated monomer, a foaming agent, a cross-linking agent, an initiator, a dispersion stabilizer, a dispersion stabilizing additive and a dispersion medium, wherein the olefinic unsaturated monomer is prepared from the following components in percentage by weight: 40 to 70 percent of acrylonitrile monomer, 10 to 30 percent of acrylic acid monomer, 10 to 30 percent of acrylamide monomer, 0 to 30 percent of acrylate monomer and 5 to 30 percent of silicon-containing acrylate monomer. The foam breaking temperature, the durability and the foam stabilizing performance of the microspheres can be remarkably improved.

The invention provides an electromagnetic shielding material, a shell structure, a battery monomer, a battery and an electric device. The electromagnetic shielding material comprises a first coating, the first coating comprises a first oligomer, a first unsaturated monomer, a first photoinitiator and a modified MXene material, and the modified MXene material is an MXene material of which the surface is chemically modified with a hydrophobic group and an unsaturated group. The first photoinitiator generates free radicals under light irradiation, the free radicals can initiate a polymerization reaction between the first oligomer and the first unsaturated monomer to generate resin, and hydrophobic groups on the surface of the modified MXene material serve as functional groups with good compatibility with the oligomer, so that the interface bonding effect between the MXene material and the resin can be enhanced; and the unsaturated group can participate in curing crosslinking as a reactive group and improve the free radical capture efficiency, so that the dispersion effect of the MXene material in the resin can be effectively improved through the dual effects, and the risk of forming a conductive network is reduced, thereby improving the use safety of the electromagnetic shielding layer in the battery.

The present invention relates to a method comprising the steps of: a) contacting styrene and an ethylenically unsaturated monomer under emulsion polymerization conditions to form an aqueous dispersion of styrenic copolymer particles and residual monomers; and b) contacting the dispersion of the styrenic copolymer particles with a reductant and a t-C4-C10-alkyl hydroperoxide to reduce the concentration of residual monomers in the aqueous dispersion to less than 1000 ppm of residual monomers; wherein the mole-to-mole ratio of the t-C4-C10-alkyl hydroperoxide to reductant is in the range of from 3:1 to 50:1. The method of the present invention provides a way of preserving a styrenic latex even in the absence of a biocide.

The present invention relates to an aqueous suspension comprising at least one linear diacyl peroxide and at least one oxyalkylated fatty alcohol having an HLB value of less than or equal to 16. The invention also relates to the use of at least one aqueous suspension, as described above, for the polymerization or copolymerization of one or more ethylenically unsaturated monomers, preferably halogenated, and more preferably vinyl chloride.

The present application relates to a kind of anti-mud slump type polycarboxylic water reducer and its preparation method, the polycarboxylic water reducer preparation raw material includes: polyether macromonomer 80~100 parts;Rigid unsaturated monomer 1~2 parts;Crosslinking monomer 1~2 parts;Unsaturated sulfonic acid monomer 2~3 parts;Unsaturated acid 10~15 parts;Oxidant 0.5~2 parts;Reducing agent 0.5~2 parts;And chain transfer agent 1~2 parts.The present application uses ethylene glycol monovinyl ether polyoxyethylene ether as polyether monomer, introduces crosslinking monomer itaconic acid polyethylene glycol ester, forms crosslinked molecular structure, and introduces (4- vinylphenyl) trimethoxysilane and other rigid structure, avoids clay's wipe layer adsorption, reduces clay surface adsorption site, weakens the competitive adsorption effect of clay to polycarboxylic water reducer, greatly improves anti-mud performance and slump performance.