153 results about "Alkyl methacrylate" patented technology

The invention relates to a recyclable easily-degradable macromolecular surfactant for cleaning oily sludge and application of the recyclable easily-degradable macromolecular surfactant. The macromolecular surfactant is prepared by taking acrylamide, methacrylic acid long-chain alkyl ester and tertiary amino substituted methacrylate as raw materials through free radical polymerization. The macromolecular surfactant is dissolved in water to prepare a cleaning solution, and oily sludge can be efficiently eluted. CO2 and N2 are sequentially introduced into the oil-containing emulsion after the oil-containing sludge is cleaned, or diluted hydrochloric acid and a diluted alkali aqueous solution are sequentially added, the hydrophilic-hydrophobic property of the macromolecular surfactant is changed through pH regulation and control, separation of the macromolecular surfactant and an oil phase is achieved, petroleum resources are recycled, and recycling of the cleaning solution containing the macromolecular surfactant is achieved. The residual macromolecular surfactant in the cleaned deoiled sludge can be degraded under the action of environmental microorganisms.

The invention discloses a polymeric dispersant, a preparation method, a pigment paste and a photocuring composition, the polymeric dispersant is characterized in that the polymeric dispersant is a terpolymer formed by controllable free radical polymerization of a structural unit A, a structural unit B and a structural unit C. The structural unit A is derived from alkyl (meth) acrylate; the structural unit B is derived from polyethylene glycol (methyl) acrylate; and the structural unit C is derived from an N-acryloyl carbazole monomer. The polymeric dispersant aims to overcome the defect that the flexibility of the anchoring group connection mode in the existing carbazole dispersant is too large, and the N-acryloyl carbazole monomer with an optimized structure and a ternary polymerization framework are adopted to realize more efficient and lasting anchoring with the pigment surface, so that the flocculation problem is solved, and the super-stable dispersion is realized.

The invention relates to a thermoplastic molding composition (P) comprising: (A) thermoplastic polymer composition (A) comprising: (A-1) 10 to 50 wt.-% of graft copolymer (A-1), (A-2) 1 to 50 wt.-%, of thermoplastic polymer matrix (A-2) based on one or more vinylaromatic copolymers, (A-3) 20 to 50 wt.-%, of polymerized alkyl methacrylate component (A-3), and (A-4) 0 to 45 wt.-% of comonomer which is copolymerized with the at least one polymerized alkyl methacrylate component (A-3), where the sum of (A-1), (A-2), (A-3) and optional comonomers (A-4) is 83.2 to 99.8 wt.-%; (B) a hindered amine light stabilizer composition (B), comprising at least two of substances (B-1) to (B-3): (B-1) 0 to 0.9 wt.-%, of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure (B-2) 0 to 0.9 wt.-%, of a hindered amine light stabilizer mixture having a monopiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the monopiperidine structure, and (B-3) 0 to 2 wt.-%, of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups with at least one alkyl group at each of the 2 and 6 positions of the piperidine groups (C) 0 to 5 wt.-%, of one or more further additives (C), different from (B); and (D) 0 to 10 wt.-%, of colorants, dyes and / or pigments (D), different from (C); wherein the constituents (A) to (D) sum up to 100 wt.-% of the molding composition (P).

The invention belongs to the technical field of oily sludge cleaning, and particularly relates to a macromolecular / micromolecular composite surfactant for intensively cleaning oily sludge. A main monomer (such as acrylamide), a hydrophilic monomer (such as 2-acrylamido-2-methylpropanesulfonic acid) and a hydrophobic monomer (such as methacrylic acid long-chain alkyl ester) are mixed, and the macromolecular surfactant is synthesized through free radical polymerization. The specific long-chain structure of the macromolecular surfactant can form larger micelles, colloid and asphaltene can be effectively wrapped, the macromolecular surfactant is compounded with the micromolecular surfactant for use, and mixed micelles with higher solubilizing capacity can be formed, so that the colloid and asphaltene in the high-medium-concentration oily sludge can be efficiently removed, and the high-medium-concentration oily sludge can be effectively removed. Further, the removal rate of total petroleum hydrocarbon is improved. The invention provides a new technology for high-efficiency deep treatment of high-medium-concentration oily sludge.

The composition includes an acrylic monomer having a carboxylic acid group, an acrylic monomer having a hydroxyl group, at least one of an alkyl acrylate or alkyl methacrylate, and from 15 to 22 percent by weight of a compound composed of divalent segments L and at least two X groups. The divalent segments L are represented by formula L. Each segment L is independently directly bonded to two secondary N atoms, two tertiary N atoms, or a secondary and a tertiary N atom. Each R1 represents an alkylene group having from 1 to 4 carbon atoms, and at least some of the R1 groups are —CH2—CH2—CH2—CH2—. Each X group is independently represented by the formula CH2═C(R)—C(O)—O—V—W—C(O)—. Articles and methods using the composition are also described.

Provided is a graft copolymer in which a (meth)acrylic acid ester-based polymer block (A) that has a reactive silicon group and a hydrocarbon-based polymer block (B) are bonded in the order of A-B-A. The content of (meth)acrylic acid alkyl esters in which an alkyl has 4 or more carbon atoms is preferably not less than 10 wt% in the graft copolymer. The (meth)acrylic acid ester-based polymer block (A) includes a structural unit derived from a chain transfer agent (a2) having a mercapto group, and the molar ratio of the hydrocarbon-based polymer block (B) to the chain transfer agent (a2) having a mercapto group is preferably not less than 0.06.

In some embodiments, the curable composition comprises: at least one high Tg alkyl (meth) acrylate, the high Tg alkyl (meth) acrylate being free of polar 5 groups and having a homopolymer Tg of at least 60 DEG C; at least one low Tg alkyl (meth) acrylate free of polar groups and having a homopolymer Tg of less than-30 DEG C; at least one crosslinking agent; and at least one photoinitiator. The curable composition is solvent-free and inkjet printable, has a viscosity of less than 25 centipoise at room temperature, and when cured to form a 100 [mu] m thick coating, has a Tg of at least 50 DEG C as measured by DMA (Dynamic Mechanical Analysis), an adhesion to glass of less than 20 g / inch (7.7 N / m) as measured by 180 DEG peel adhesion, a Young's modulus of greater than 0.5 GPa, and is optically transparent.

The present invention provides a thermoplastic resin composition including a first graft copolymer including a conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer; a second graft copolymer including an alkyl (meth)acrylate-based polymer, an aromatic vinyl-based monomer, a vinyl cyanide-based monomer, and an alkyl (meth)acrylate-based monomer; and a thermoplastic copolymer including an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer, wherein the first graft copolymer is included in an amount of 5 to 12% by weight, and the weight of the first graft copolymer is less than the weight of the second graft copolymer and at the same time less than the weight of the thermoplastic copolymer, and a molded article manufactured using the thermoplastic resin composition.

The invention relates to a process for the preparation of methacrylic acid by reacting C1-C3-alkyl methacrylate with water. In the process, the reaction mixture obtained in the reaction is separated in a first rectification column (A) and the resulting overhead stream (12) is separated by means of a phase separator (a) to obtain an organic phase (5) and an aqueous phase (4). The resulting bottom stream (6) is separated in a second rectification column (C) to obtain an overhead stream (9) containing methacrylic acid.

A method for producing a (meth)acrylate monomer of a polyalkoxylated alcohol includes providing an unneutralized polyalkoxylated alcohol, wherein the unneutralized polyalkoxylated alcohol is produced by base catalyzed alkoxylation. An alkyl (meth)acrylate is transesterified with the unneutralized polyalkoxylated alcohol to produce the (meth)acrylate monomer of the polyalkoxylated alcohol. No transesterification catalyst is added during the step of transesterifying the alkyl (meth)acrylate with the unneutralized polyalkoxylated alcohol.

A method of preparing a thermoplastic resin including kneading and extruding an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A), or an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound, a vinyl cyanide compound, an alkyl methacrylate, and an alkyl acrylate. A total content of the alkyl acrylate included in the thermoplastic resin is 20 to 50% by weight. An alkyl acrylate coverage value (X) of the thermoplastic resin as calculated by Equation 1 (X={(G−Y) / Y}×100) is 65 or more. In Equation 1, G represents a total gel content (%) of the thermoplastic resin, and Y represents a content (% by weight) of the alkyl acrylate in the gel of the thermoplastic resin.

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 discloses a high-molecular composite damping brominated grafting agent and a preparation method thereof. The high-molecular composite damping brominated grafting agent is a linear isotactic block copolymer composed of isocyanyl alkyl methacrylate, unsaturated carboxylic acid, 3,5-dibromostyrene and para-alkyl styrene. The application further discloses a method for preparing brominated branched butyl rubber. The method for preparing the brominated branched butyl rubber with wide temperature range and high damping has the characteristics of green environmental protection, stable product quality, easy availability of raw materials, and convenient industrial production.

Provided is a release coating agent for a polyester base material, which has excellent adhesion to the polyester base material and has heat peeling resistance. A release coating agent for a polyester substrate according to an embodiment includes an aqueous dispersion in which a polyurethane resin is dispersed in an aqueous dispersion medium. The aqueous dispersion contains a (meth) acrylic polymer that contains, as constituent components, a monofunctional alkyl (meth) acrylate having an alkyl group having 4-22 carbon atoms and a poly (meth) acrylate having 2-6 functional groups.

Provided is a medical adhesive comprising: a water-dispersible acrylic polymer obtained by polymerization of an alkyl (meth)acrylate; and an organic liquid component having a molecular weight of 1,500-7,000 and a hydrophobic ratio of 38-75%.

The present invention provides a single-stranded nucleic acid adsorption inhibitor containing one or more polymers selected from the group A: [group A] Polymer A1: a copolymer containing a structural unit (a) derived from 2-(meth) acryloyloxyethyl phosphorylcholine and a structural unit (b) derived from a C2-C6 alkyl (meth) acrylate having two or more hydroxyl groups as substituents; polymer A2: a copolymer containing the constituent unit (a) and a constituent unit (c) derived from a polyethylene glycol (meth) acrylate; and polymer A3: a copolymer containing the constituent unit (a) and a constituent unit (d) derived from a C1-C6 alkyl (meth) acrylate having a phenyl group or a phenoxy group as a substituent.

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.

A preparation method of a high-moisture-permeability fluorine-containing super-oleophobic microporous membrane is provided having the following steps: (1) preparing a white opaque mixture of fluorine-containing polymers: adding the materials in sequence according to a weight ratio of A50%˜90%:B3%˜25%:C0%˜35%:D0%˜3%, and stirring and mixing uniformly in a non-shear manner; A is a blend of a high molecular weight polytetrafluoroethylene dispersion resin and a fluorine-containing ion exchange resin; B is a fluorine-containing alkyl acrylate monomer, or a fluorine-containing alkyl methacrylate monomer, or a mixture thereof; C is a polyurethane acrylate prepolymer, or a fluorine-free alkyl acrylate monomer, or a mixture thereof; D is a high temperature free radical initiator; (2) pouring the white opaque mixture into the blank pressing column barrel, and pressing a blank; (3) calendering into strips; (4) stretching and thermally shaping to form a membrane.

Provided is an adhesive composition that can be used for multi-stage curing, that can obtain excellent adhesive properties in a low cross-linked state after one-time curing, that can be efficiently subjected to multi-stage curing even when the amount of active energy rays during curing is small, and that can be used for multi-stage curing. Alternatively, during curing, multi-stage curing can be efficiently performed using active energy rays in the visible light region, and after final curing, high elasticity of the adhesive layer can be achieved, and excellent adhesive properties, reliability, and shape stability can be obtained. A pressure-sensitive adhesive composition containing: an acrylic resin (A) having a glass transition temperature, calculated from dynamic viscoelasticity, of 12 DEG C to 40 DEG C; and a structural unit derived from an alkyl (meth) acrylate (a1) having an alkyl group having 5 or more carbon atoms, and a structural unit derived from an ethylenically unsaturated monomer (a3) containing an amide group.

To provide a plasticizer capable of obtaining a thermoplastic resin composition excellent in flexibility, cold resistance and heat resistance.SOLUTION: The plasticizer contains a (meth) acrylic polymer having a weight average molecular weight of 3,000 or less. The (meth) acrylic polymer includes a structural unit (U1) derived from an alkyl (meth) acrylate and a structural unit (U2) having a cyclic ether group having 3 to 5 ring atoms, and has an SP value of 9.30 or more and a glass-transition temperature of - 75 °C. or less.SELECTED DRAWING: None

The present disclosure provides, as a film structure useful for a probe of a biosensor, a film structure comprising a detection layer including an analyte-responsive enzyme; and a protection film formed on the detection layer, in which the protection film includes a copolymer mixture including poly(styrene-ran-4-vinylpyridine-ran-propyleneglycol methacrylate); and poly(4-vinylpyridine)-block-poly(C1-15 alkyl methacrylate), or poly(4-vinylpyridine-ran-2-hydroxyethyl methacrylate).

The purpose of the present invention is to provide a composite structure in which an adhesive member and an adherend can be reused together. Another purpose of the present invention is to provide a polyolefin resin molded article obtained by molding the composite structure. Another purpose of the present invention is to provide an automobile member comprising the composite structure or the polyolefin resin molded article. Another purpose of the present invention is to provide a method for producing a polyolefin resin molded article using the composite structure. The present invention pertains to a composite structure provided with an adhesive member and an adherend, the adhesive member having an adhesive agent formed from an adhesive agent composition containing an acrylic copolymer, the acrylic copolymer has a structural unit derived from an alkyl (meth) acrylate and a structural unit derived from an olefin polymer having a polymerizable unsaturated double bond at the terminal, and the adherend includes a member containing a polyolefin resin.

[Problem] To provide a coating agent, a cured product, and a laminate. [Technical means] A coating agent containing a polymer containing a hydroxyl group-containing alkyl (meth) acrylate unit and 60 mass% or more of a C1-7 alkyl group-containing (meth) acrylate unit, and a polyisocyanate, the ratio (NCO / OH) of the amount of substance of isocyanate groups in the polyisocyanate to the amount of substance of hydroxyl groups in the polymer is 1 or more.

This invention belongs to the field of polymer material synthesis technology, specifically relating to a core-shell vinyl acetate emulsion for interior walls and its preparation method. Addressing the problems of insufficient scrub resistance and low efficiency in introducing functional monomers in existing vinyl acetate emulsions, the following solution is provided: A pre-emulsion A is obtained by emulsifying deionized water, a composite emulsifier, and a pH buffer with a core-layer mixed monomer mixture. The core-layer mixed monomer mixture includes vinyl acetate, vinyl tert-carbonate, C1-C4 alkyl esters of (meth)acrylate, a carboxylic acid functional monomer containing double bonds, diacetone acrylamide, and organosilicon-modified monomers. After seed emulsion preparation and core-layer polymerization, a shell-layer monomer mixture B (containing phosphate-based adhesion-promoting monomers, hydroxyalkyl esters, and vinyl acetate) is introduced for shell-layer polymerization. Post-treatment yields the emulsion. The emulsion possesses a hard core-functionalized soft shell structure, and the resulting interior wall coating can withstand over 8000 scrub cycles, far exceeding the national standard for superior products. Furthermore, the emulsion exhibits excellent storage stability.

This invention belongs to the field of oily sludge cleaning technology, specifically a macromolecular / small molecule composite surfactant for enhanced cleaning of oily sludge. A macromolecular surfactant is synthesized by mixing a main monomer (such as acrylamide), a hydrophilic monomer (such as 2-acrylamido-2-methylpropanesulfonic acid), and a hydrophobic monomer (such as long-chain alkyl methacrylate) through free radical polymerization. The unique long-chain structure of this macromolecular surfactant can form larger micelles, effectively encapsulating colloids and asphaltenes. When used in combination with a small molecule surfactant, it forms mixed micelles with stronger solubilizing capabilities, achieving highly efficient removal of colloids and asphaltenes from high-to-medium concentration oily sludge, thereby improving the removal rate of total petroleum hydrocarbons. This invention provides a new technology for the efficient and deep treatment of high-to-medium concentration oily sludge.

This invention discloses a reactive nonionic comb-shaped polymeric permanent antistatic agent, its preparation method, and its application. The antistatic agent is obtained by copolymerizing polyethylene glycol monomethyl ether (meth)acrylate (40-75 parts), C1-C8 alkyl (meth)acrylate or styrene (15-40 parts), epoxy-containing (meth)acrylate (5-20 parts), and hydroxyl-containing (meth)acrylate (0-10 parts). It has a comb-like structure; the PEG side chains provide nonionic antistatic properties, and the epoxy groups undergo an in-situ ring-opening reaction during melt blending with the plastic matrix, achieving chemical anchoring. This invention solves the problems of easy water washing and loss, easy yellowing, and poor compatibility of traditional antistatic agents. It has advantages such as simple synthesis process, heat resistance and transparency, and permanent antistatic properties, and is suitable for the modification of various plastics such as PC, PMMA, and ABS.

A coating composition is applied to a roof 2, and this coating composition is dried, whereby a primer layer 6 is obtained. This coating composition contains (1) a polymer including an alkyl (meth)acrylate ester monomer unit in the main chain, and (2) a partial reaction product of a mixture containing an epoxy compound and an aminosilane compound. Preferably, the amount of the partial reaction product (2) is 1 part by mass or more and 150 parts by mass or less with respect to 100 parts by mass of the polymer (1). Preferably, the ratio (Y / X) of the number (Y) of an amino group and / or an imino group in the aminosilane compound to the number (X) of an epoxy group in the epoxy compound in the mixture is 0.2 or more and 1.5 or less.

Provided in the present invention is a preparation method for monodisperse nanometer beryllium oxide, comprising the following steps: (S1) uniformly mixing urea and an aqueous formaldehyde solution, adjusting the pH with an organic amine to be weakly alkaline, and adding hydroxyalkyl (meth)acrylate, C12-16 alkyl (meth)acrylate and polyethylene glycol diacrylate to obtain a premix; (S2) adding a water-soluble beryllium salt to the premix, and under an inert atmosphere, adding a water-soluble initiator and slowly raising the temperature to 60-80°C for reaction to obtain a gel precursor; and (S3) after the gel precursor is dried, calcining same, washing same, and filtering same to obtain monodisperse nanometer beryllium oxide. The present invention involves a simple process and low costs, and the obtained beryllium oxide is nanoscale and has a monodisperse particle size.

To provide a laser marking composition capable of forming a two-dimension film which is excellent in heat resistance and readability when a one dimensional code or a resinous code is printed, and in which generation of gas during printing is suppressed.SOLUTION: The laser marking composition contains at least one (meth) acrylic resin, a bismuth-containing compound, and a crosslinking agent having a triazine ring skeleton, wherein the total proportion of a methacrylic acid-derived structural unit and a methacrylic acid alkyl ester-derived structural unit in all structural units of the (meth) acrylic resin is less than 45 mass%.SELECTED DRAWING: Figure 1