415 results about "Unsaturated monomer" patented technology

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 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 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 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 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.

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.