2387 results about "Functional monomer" patented technology

The present invention relates to molecularly imprinted polymers comprising tailor-made recognition sites for a target in which said recognition sites are located at or close to the surface of the polymer and/or of pores in the polymer. The molecularly imprinted polymer comprising tailor-made recognition sites for a target is obtainable by polymerising functional monomers and, optionally, cross-linked, optionally in a reaction solvent, in the presence of at least one template immobilised on a support material in a polymerisation process, whereby non-covalent or covalent are formed between said functional monomers and said immobilised template(s), and removing said template(s), and said support material from the molecularly imprinted polymer.

A cement composition includes cement, water in an amount from about 30% to 200% by weight of cement, and an interpolymer latex in an amount from about 10% to 50% by weight of cement. The interpolymer latex includes at least one conjugated diene monomer having 4 to 8 carbon atoms in an amount from about 5% to 95% by weight of the interpolymer latex, at least one vinyl aromatic monomer having 8 to 12 carbon atoms in an amount from about 5% to 95% by weight of the interpolymer latex, and a copolymerizable functional monomer in an amount from about 0.5% to 50% by weight of the interpolymer latex. A method of making a cement composition involves placing the above ingredients in a suitable mixer well known to those of ordinary skill in the art and mixing the ingredients until they form the cement composition. A method for cementing a subterranean zone penetrated by a wellbore involves forming a cement composition according to the above method, pumping the cement composition into the subterranean zone to be cemented by way of the wellbore, and allowing the cement composition to set within the subterranean zone.

Medical devices having at least a portion thereof coated with a lubricious polymer are disclosed. The lubricious polymer can be, for instance, a hydrogel polymer, such as a quaternary amine acrylate polymer. To bond the lubricious polymer to the surface of the medical device, the medical device is first subjected to a solvent and a multi-functional monomer. The solvent causes the multi-functional monomer to become imbibed into the surface of the medical device. Thereafter, a polymer having lubricious properties is polymerized on the surface of the device. The multi-functional monomer reacts with the polymer coating securely affixing the polymer coating to the device.

A composition and a method of use as a dental restorative. A series of highly alkoxylated tri-functional monomers are used as a low viscosity monomer in a photo- or self-curable dental composition that resulted in low polymerization shrinkage. The mechanical strength of the restorative material was not compromised. The restorative composition may be used as a dental filling material, a cement, a liner/base, or an adhesive.

The invention relates to a high-strength high-tenacity protein molecule imprinting hybrid gel film and a preparation method thereof. The preparation method comprises the following steps of: with sodium alginate as a molecular frame, a water-soluble compound as a pore-forming agent as well as acrylamide and derivants thereof as functional monomers, dissolving the functional monomers and a protein template to form a complex, adding a chemical crosslinking agent and an ionic crosslinking agent, and initiating the polymerization to form high-strength and high-tenacity double-crosslinked network hydrogel containing protein; and eluting the pore-forming agent and the protein template to obtain a porous hybrid gel film, wherein the porous hybrid gel film has larger adsorbing capacity and better adsorptive selectivity on the protein template. The performances of the gel can be changed by using various environment stimulating factors, such as temperature, pH, solvent property, ion strength and special chemical simulation, and therefore, the interaction between the molecule imprinting hybrid film and protein can be controlled. The preparation method is simple in process and low in cost; and the obtained porous hybrid gel film has a favorable application prospect in the fields including protein separation and analysis, protein control and release, tissue engineering and the like.

The invention discloses a room temperature self-crosslinking acrylic ester emulsion. The emulsion comprises deionized water, an initiator, an emulsifier, a vinyl aromatic compound, carboxyl-containing olefin monomers, alkyl acrylate unsaturated monomers of C4-C12, methacrylate unsaturated monomers of C4-C20 and functional monomers. The emulsion is prepared with an emulsion polymerization method by adding a pH regulator, a curing agent and a metallic cross linker. The emulsion has the advantages of high glossiness, good abrasive resistance, water resistance and alcohol resistance, has good dryness under high humidity, can be applied to different coating fields and is also suitable for floor wax formulas of polishing-free wax, spray cleaning, cleaning wax polish and the like. The emulsion can be applied to various rigid base materials such as PVC (Polyvinyl Chloride), boards and composite boards and has good balance between detergent resistance and removability.

The invention is based on the discovery that adhesive compositions containing certain low-viscosity, mono-ethylenically unsaturated monomers have surprisingly good cure parameters, resulting in very little weight loss upon cure. Many of these monofunctional monomers used alone or in combination with other monofunctional monomers described herein have high glass transition temperatures when cured. Moreover, since these monomers are monofunctional the crosslink density of the adhesive composition does not increase (relative to multi-functional monomers), which in turns results in lower stress, lower modulus adhesive compositions. As such, these monomers are useful in a variety of thermoset adhesive compositions, such as for example, die attach adhesive compositions.

The present invention provides structures including a substrate, a crosslinked polymer film disposed over the substrate, and a patterned diblock copolymer film disposed over the crosslinked polymer film. The crosslinked polymer comprises a random copolymer polymerized from a first monomer, a second monomer, and a photo-crosslinkable and/or thermally crosslinkable third monomer, including epoxy-functional or acrylyol-functional monomers. Also disclosed are methods for forming the structures.

The invention discloses a pressure sensitive adhesive for a protective film and a preparation method thereof. The pressure sensitive adhesive is formed by polymerizing acrylic monomers through radicals, wherein the acrylic monomers comprise the following components in percent by weight: 30-50 percent of acrylic soft monomer, 5-20 percent of acrylic hard monomer, 0.5-2.5 percent of acrylic functional monomer, 0.5-2.5 percent of acrylic crosslinking monomer, 40-60 percent of solvent, 0.2-2.0 percent of initiating agent and 0.01-0.2 percent of chain transfer agent. The adhesive has higher initial adhesion and permanent adhesion and excellent weather-proof and aging-resisting performances and can meet the requirement of a protective film adhesive with higher strength requirement.

Medical devices having at least a portion thereof coated with a lubricious polymer are disclosed. The lubricious polymer can be, for instance, a hydrogel polymer, such as a quaternary amine acrylate polymer. To bond the lubricious polymer to the surface of the medical device, the medical device is first subjected to a solvent and a multi-functional monomer. The solvent causes the multi-functional monomer to become imbibed into the surface of the medical device. Thereafter, a polymer having lubricious properties is polymerized on the surface of the device. The multi-functional monomer reacts with the polymer coating securely affixing the polymer coating to the device.

The invention relates to thermosetting acrylic resin for a powder coating. The thermosetting acrylic resin is prepared from the following raw materials in parts by mass: 4-14 parts of an initiator, 110-280 parts of soft monomers, 400-570 parts of hard monomers, 192-450 parts of functional monomers, and 1-8 parts of a molecular weight regulator, wherein the soft monomers refer to acrylic acid alkyl ester compounds, and the hard monomers refer to methacrylate, styrene, or compounds of derivatives of methacrylate and styrene. The acrylic resin contains epoxy functional groups and hydroxyl functional groups simultaneously, wherein the epoxy equivalent is 570-630g/mol and the hydroxyl value is 40-50mgKOH/g; the acrylic resin can react with various substances such as carboxyl, amidogen and isocyanate and can be used for powder coating. A coating film, which is formed after the thermosetting powder coating prepared from the acrylic resin in combination with other materials is sprayed, has excellent weather resistance, good leveling performance, outstanding surface hardness, and high glossiness, durability and decorating performance; the powder coating can be used for indoor or outdoor metal sectional materials or building materials. The thermosetting acrylic resin can substitute for TGIC (triglycidyl isocyanurate) to a certain extent so as to avoid the use of the toxic substances.

The invention discloses high-hydroxy silicon-acrylate aqueous glass coating emulsion and a synthesis method thereof. The high-hydroxy silicon-acrylate emulsion with a particle size between 100 and 180 nanometers and a solid content of 40 to 48 percent is prepared by adopting a monomer pre-emulsification method and a semi-continuous seed emulsion polymerization process and by introducing a hydroxymonomer containing double bonds and organic silicon functional monomer containing double bonds in a polymerization process of acrylate emulsion. The emulsion is low in gel rate and high in stability and can be stored for more than one year. After being added with a curing agent, the emulsion is coated on a glass surface and baked for 2 hours at 20 DEG C to be cured into a film, the film-coated pencil hardness is more than or equal to 2H, the adhesive force of the film is of grade one, the film has high waterproof performance, the cost of the emulsion is low and the preparation process of the emulsion is simple.

The invention discloses a comb-type structural reactive polymer with the molecular weight ranging between 1x10<5> and 5x10<6>, wherein the main chain of the reactive polymer is obtained through the copolymerization of acrylamide monomer and functional monomers such as 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid sodium salt, etc., which endues polymer aqueous solution with higher apparent viscosity and better temperature resistance and salt resistance; and the branched chain of the reactive polymer consists of unsaturated macromonomer molecule, which endues the polymer aqueous solution with higher surface activity. The invention also discloses a preparation method for the polymer, comprising the following steps: firstly, through process operation including esterification, prepolymerization and sulfonation, polyurethanes active macromonomer with a novel structure is prepared; then, under the action of oxidation reduction initiator, the copolymerization reaction of the active macromonomer and other functional micromolecule monomers is initiated quickly at low temperature. The comb-type structural reactive polymer can be used as oil displacement agent and has the advantages of high molecular weight and low surface tension, etc.

The present invention includes a curable ink composition for digitally printing onto plastic substrates and three dimensional objects comprising an ink composition comprising a pigment, an oligomeric component, a diluent, additives and a mono-functional monomer having a molecular weight of 10 g/mole to 600 g/mole. The curable ink composition adheres to the plastic substrate to thereby allow elongation of 100% to 900% of the printed ink image during thermal processing of the plastic substrate.

The present invention relates to an organic-inorganic composite high-molecular microsphere with multiple response property and its preparation method. Said method includes the following steps: using alkyl metasilicate as precursor, utilizing gel-sol process to prepare magnetic nano granules covered with silicon dioxide, and using silicane coupling agent to make surface modification, then adopting template polymerization process, using the above-mentioned magnetic nano granules as seed and using isopropyl acrylamide or its derivative as main monomer, and using acrylic acid or its salt as functional monomer and controlling the dose of main monomer, functional monomer and crosslinking agent to prepare the organic-inorganic composite high-molecular microsphere with different swelling ratios.

The invention relates to a molecular imprinting chemiluminescence sensor for detecting trace amount pesticide residues, belonging to the technical field of the detection of the pesticide residues. Theinvention also relates to a method for detecting the trace amount pesticide residues contained in agricultural product samples by using the molecular imprinting chemiluminescence sensor, which comprises the following steps: (1) selecting a functional monomer; (2) uniformly mixing a template molecule, the functional monomer, a cross linker, a pore-forming agent, an initiating agent and a silicon source to prepare an MIPs collosol according to a mole ratio of 0.1-1 to 1-10 to 5-25 to 20-60 to 0.05-0.15 to 20-50; (3) preparing a quantum dot material solution; and (4) modifying the MIPs collosoland quantum dot materials to the surface of a millipore plate to manufacture the chemiluminescence sensor by a layer-layer self-assembly surface modification technique. The invention has the advantages of high specificity and sensitivity, fast detection, low cost, good repeatability and convenient field detection on the detection of the pesticide residues.

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

The present invention provides a transparent thermoplastic resin composition which may comprise (A) about 1 to about 100 parts by weight of an ultra-high molecular weight branched acrylic copolymer resin; (B) about 0 to about 99 parts by weight of an acrylic resin; and (C) about 0 to about 40 parts by weight of an acrylic impact modifier, based on 100 parts by weight of (A) and (B). The ultra-high molecular branched acrylic copolymer resin (A) may be prepared by polymerizing a monomer mixture comprising (a1) about 50 to about 99.899% by weight of a mono-functional monomer, (a2) about 0.1 to about 40% by weight of a (meth)acrylic monomer having a flexible segment represented following Chemical Formula 1, and (a3) about 0.001 to about 10% by weight of a branch-inducing monomer. The thermoplastic resin composition of the present invention can have improved transparency, scratch resistance, flowability, and impact strength.

The invention discloses an aqueous acrylic emulsion, an aqueous adhesive for plastic-plastic composite materials and a preparation method thereof, and belongs to the field of preparation of adhesive. The acrylic emulsion is polymerized from 30-50 wt% of acrylic acid hard monomer, 40-60 wt% of acrylic acid soft monomer and 5-10 wt% of acrylic acid functional monomer under the action of water, an emulsifying agent, an initiator, a buffering agent and a pH regulator. The invention also provides an aqueous adhesive and a preparation method thereof. The molecule segment of the film forming matter (acrylate copolymer) in the aqueous acrylic emulsion has various chemical groups, such as -OH, -COOH, -NH and the like; and the chemical groups can form various chemical bonds and hydrogen bonding acting force, and thereby having favorable adhering force for various composite substrates (plastic films, aluminum plating films, metal foils and the like). By properly matching the soft monomer and the hard monomer and adopting the corresponding functional monomer to participate in the copolymerization, the invention enhances the adhesive affinity to the plastic films with low surface tension, thereby enhancing the wetting property of the adhesive on the surface of the plastic films and the combined strength.

The invention discloses waterborne polyurethane-acrylate emulsion prepared by the seed emulsion polymerization method. The method comprises the following steps: performing vacuum dehydration treatment to polymer polyol or diol in advance, adding micromolecular chain extender A, adding diisocyanate to react under heat insulation condition; adding hydrophilic chain extender and cosolvent to react; adding functional monomer A and catalyst to react; cooling, adding viscosity reducer and neutralizer to react, adding deionized water while stirring at high speed to obtain emulsion, slowly adding the mixture of micromolecular chain extender B and deionized water to cure and obtain vinyl-terminated reticulated polyurethane emulsion; mixing anionic emulsifier, non-ionic emulsifier and initiator with deionized water, adding acrylate mixed monomer to prepare emulsion fast, then introducing nitrogen, adding reductant to initiate polymerization and ensure that the emulsion has blue fluorescence, then adding vinyl-terminated reticulated polyurethane emulsion, and standing under heat insulation condition to obtain the core-shell type polyurethane-acrylate emulsion. The emulsion disclosed by the invention has good water resistance and wear resistance and meets the requirement of environmental protection.

The invention relates to a methyl acrylate pressure-sensitive adhesive for an LCD polarizer and a preparation method thereof, which belong to the technical field of tackiness agent. The pressure-sensitive adhesive comprises the following three materials with the quality shares: a. weight average molecular weight Mw is 100000-2000000, dispersion degree Mw/Mn is 4-20 acrylate copolymer 100 shares, b. coupling agent, c. cross linker 0-15 shares, the comonomer of prepared acrylate copolymer comprises two parts: 1. (methyl) acrylate monomer : 90%-99.5%, 2. functional monomer: 0.5%-10%, wherein the functional monomer is one or several of (methyl) acroleic acid and (methyl) acroleic acid hydroxy ethyl, (methyl) acroleic acid hydroxypropyl acrylate, itaconic acid, acrylamide, N-hydroxymethyl acrylamide and maleic anhydride. The methyl acrylate pressure-sensitive adhesive does not contain elasticizer or low-molecular-weight acrylate copolymer and the like, can reach the use requirement without cross linker under the condition that the requirement to sticking property is low, and the glue layer has better stress relaxation property, and pressure-sensitive adhesive initial adhesion and stripping strength are both extremely ideal.

The invention discloses drag reducer which can be applied to slickwater fracturing fluid and a method for preparing drag reducer. The method includes: adding organic salt into acrylamide and functional monomer aqueous solution to prepare an aqueous phase, adding the aqueous phase into an oil phase system consisting of surfactant and base oil under the condition of high-speed stirring to form a stable W/O (water in oil) type microemulsion system, feeding nitrogen for dispersing oxygen, and adding initiator for polymerization to form a branchless long chain structure. The polymer microemulsion is a transparent or semitransparent thermodynamic stable system, can be quickly swelled into water and is directly usable. Adding a small quantity of the drag reducer during fluid transport can improve flow quantity and reduce energy consumption to some extent, and the drag reduction effect can reach 30%-65% when the drag reducer is compared with clear water. The drag reducer has the advantages of high stability, dissolving speed and dissolving performance, convenience in use, remarkable drag reduction effects and the like and is applicable to the slickwater fracturing technology, and excellent yield increasing effects are obtained after the drag reducer is applied to field fracturing operations.

The invention relates to an ultraviolet-curable high temperature resistant pressure-sensitive adhesive. The ultraviolet-curable high temperature resistant pressure-sensitive adhesive comprises: a solvent-free ultraviolet-curable prepolymer comprising 80-98wt% of a soft monomer and 2-20wt% of a hard monomer; one or more functional monomers comprising monofunctional monomers, bifunctional monomers or multi-functional monomers; one or more organosilicone having reactive groups or acrylates grafted by the organosilicone having reactive groups; and photoinitiators comprising a free radical cracking type photoinitiator, a hydride abstraction type photoinitiator and an ion type photoinitiator. The whole preparation process of the pressure-sensitive adhesive does not use any volatile organic solvents and is environmentally-friendly; a pressure-sensitive adhesive tape using the pressure-sensitive adhesive has a good high temperature shear resistance, has a high peeling strength on low-surface-energy materials, has a one-piece structure, and can be processed to prepare thick products without inner liner base materials.

The invention relates to the technical field of preparation of environment functional materials, in particular to a magnetic composite material surface imprinting thermosensitive adsorbent, and a preparation method and the application thereof. The method comprises the following steps that: firstly, a ferroferric oxide/nerchinskite nanotube magnetic composite material is prepared by a solvent thermal synthesis method; secondly, the magnetic composite material is modified on ethenyl by using 3-(methacrylo) propyltrimethoxyl silane; and finally, the nerchinskite nanotube magnetic composite material is prepared by using the ethenyl-modified magnetic composite material as a substrate material, 2, 4, 5-trichlorophenol as a template molecule, methacrylate as a functional monomer, N-isopropylacrylamide as a thermosensitive functional monomer, ethylene glycol dimethacrylate as a cross-linking agent, and 2,2'-azodiisobutyronitrile as an initiator. The prepared thermosensitive imprinting adsorbent is obvious in thermal stability and magnetic stability, sensitive in magnetic effect and thermosensitive effect, relatively high in adsorption capacity, obvious in reversible absorption/release function along with temperature and obvious in tertiary calcium phosphate (TCP) molecule recognition performance.

A photoresist composition includes about 65% by weight to about 80% by weight of a mono-functional monomer, about 5% by weight to about 20% by weight of a di-functional monomer, about 1% by weight to about 10% by weight of a multi-functional monomer including three or more functional groups, about 1% by weight to about 5% by weight of a photoinitiator, and less than about 1% by weight of a surfactant, each based on a total weight of the photoresist composition.

The invention belongs to the technical field of seed emulsion polymerization, relates to a preparation of a high polymer material, and especially relates to a small-particle-size carboxylic styrene-butadiene latex and its preparation method. Technical problems comprising unadjustable particle size, bad mechanical stability, bad chemical stability and the like of latexes in the prior art are solved in the invention. The preparation method which adopts a seed emulsion polymerization technology and adopts butadiene and styrene as monomers comprises the following steps: adding soft water, a seed latex, an electrolyte, a chelating agent and a pH buffering agent; heating; adding functional monomers, unsaturated carboxylic acid, a molecular weight adjustment agent, a composite emulsifier and an initiator; degassing when the conversion rate reaches above 98%; cooling; and synthesizing the carboxylic styrene-butadiene latex. Compared with the prior art, the preparation method of the small-particle-size carboxylic styrene-butadiene latex has the advantages of realization of the adjustment of the particle size of the latex, and simple operation; and compared with present carboxylic styrene-butadiene latexes, the carboxylic styrene-butadiene latex prepared in the invention has the advantages of narrow monodispersion, good fluidity, excellent mechanical stability and excellent chemical stability.

The invention discloses a method for preparing fluorine hydrophobic oil-repellent fabric finishing agent, wherein the finishing agent is lacte emulsion with blue fluorescence. And the preparation comprises that using fluorine monometer, hydrocarbons unsaturated monometer, acid monometer and functional monometer as material, with inducer, adjusting agent, buffer agent and emulsifier, via emulsion polymerization method to be composed to obtain needed finishing agent. The inventive finishing agent has better hydrophobic oil-repellent effect, high stability and high yield, or the like.

Jettable radiation-curable building compositions and jettable support compositions useful for three-dimensional printing of objects, such as for rapid prototyping, which exhibit an excellent balance of liquid jettability properties and cured properties are provided. The radiation-curable building composition, which may be used for either three-dimensional printing or single pass (two-dimensional) printing comprises 10 to 30 percent of dendritic oligomer(s), 40-70 percent of mono-functional monomer(s), and up to 15 percent of at least one photoinitiator. The jettable support material has similar liquid jettability properties and a similar composition, but further comprises an amine synergist in an amount sufficient to produce a material that can be easily broken and separated from cured building material.

The invention relates to cross-linked polymer microsphere for oil displacement of an oilfield and a preparation method for the cross-linked polymer microsphere. The cross-linked polymer microsphere is obtained by polymerization and cross-linking of the components including acrylamide monomers, dendritic functional monomers, cross-linking agent, emulsifier, dispersion media, initiator, deionized water and selectable initiator solvent. The microsphere has good heat stability and injectivity, can be applied to surfactant flooding of an oil reservoir at the temperature as high as 150 DEG C, and is applicable to the zone permeability range from 0.05 to 5000mD. The microsphere can be directly and quickly dispersed after entering a stratum and functions in intelligent blockage. The action mechanism includes that the cross-linked polymer microsphere absorbs water to swell in a water flow passage of a water zone to form a swelling cross-linked polymer aggregate with the grain size ranging from 0.1 to 10 micrometers, and single aggregate or multiple aggregates bridge to block a pore throat of the porous media water flow passage; but in an oil layer, the cross-linked polymer microsphere cannot swell and is difficult to block a flow passage, thereby having an intelligent function of blocking water but not blocking oil.

The invention discloses a fluorine silicon acrylate copolymer, a preparation process thereof and an application thereof. The fluorine silicon acrylate copolymer is represented by formula 1 shown in the specification, and the preparation process of the copolymer is characterized in that: the fluorine silicon acrylate copolymer is prepared through carrying out a free radical quarternary random copolymerization method on a hard acrylate monomer, a soft acrylate monomer, a functional acrylate monomer containing hydroxyl, carboxyl or siloxane, and caged siloxane with a functional acrylic acid monomer containing fluorine and a functional monomer containing organosilicon in a solvent. The fluorine silicon acrylate copolymer which has the advantages of simple synthetic process, mild and easily controlled reaction condition, convenient industrialization, low surface energy and strong hydrophobicity after the film forming of the copolymer, and certain hardness and strength, can be directly mixed with a solvent and a curing agent to prepare a coating for use without adding inorganic fillers of a reinforcing agent and the like, and allows the prepared coating to have good ice and snow resistant performances.