236 results about "Monomer composition" patented technology

A toner comprises a toner particle comprising a resin A and a resin B, wherein the resin A has a structure represented by a predetermined general formula, and the resin B has a monomer unit represented by a predetermined general formula, and a toner manufacturing method comprises a step of dispersing a toner base particle comprising the resin B in an aqueous medium to obtain a toner slurry, and a step of adding a radical polymerization initiator and a monomer composition comprising a monomer represented by a predetermined general formula to the resulting toner slurry to form the resin A on a surface of the toner base particle.

The invention belongs to the technical field of medicines, and provides application of a natural-source compound monomer medicine composition in preparation of medicines for preventing and / or treating pancreatitis. The pharmaceutical composition comprises baicalin, paeoniflorin, geniposide, wogonin, baicalein, albiflorin, tetrahydropalmatine, rhein, wogonin, aloe-emodin, saikoside A, emodin, benzoyl paeoniflorin, chlorogenic acid, costunolide, or a pharmaceutically acceptable salt thereof. Compared with the prior art, the pharmaceutical composition disclosed by the invention has the advantages that the components of the composition are definite and are all natural sources, the safety is good, the pharmaceutical effect has a remarkable synergistic effect, the administration dosage is reduced by about 200 times under the condition that the treatment effect is better than that of a compound traditional Chinese medicine, the administration mode of the compound medicine for treating pancreatitis is innovated, and the pharmaceutical composition is suitable for clinical application. A new scheme is provided for the treatment of the disease.

The invention discloses a hydrogenated cycloolefin copolymer, a hydrogenated cycloolefin resin composition and a preparation method thereof. Under the condition that the monomer composition and molecular weight of the hydrogenated cycloolefin copolymer are certain, the hydrogenated cycloolefin copolymer with more excellent performance can be obtained by controlling the hydrogenation reaction conditions of the hydrogenated cycloolefin copolymer. The hydrogenated cycloolefin resin composition provided by the invention not only has the characteristics of high refractive index, low haze and aging and yellowing resistance, but also obviously improves the separation efficiency of a catalyst, has excellent processability, and has outstanding application prospects in the fields of medical packaging materials, high-end photoelectric materials and the like.

This application relates to liquid compositions comprising (meth)acrylate monomers and / or methacrylamide monomers and a solvent system comprising a mixture of aliphatic alcohols and alkylene carbonates. The liquid composition is useful as a monomer liquid component in two-part liquid-and-powder curable acrylic systems, in particular as used for the cosmetic treatment of fingernails and toenails. The invention further provides methods of forming a polymeric structure on a substrate, such as acrylic nail coatings, using the monomer liquid composition of the invention. The application further provides a novel additive for use in monomer liquid compositions.

The application discloses a preparation method of a partially fluorinated solid electrolyte and a lithium ion battery, and belongs to the field of electrode materials. The application proposes a partial fluorination strategy, and finds that by changing the ratio of monofunctional polymerizable acrylate monomers and bifunctional polymerizable acrylate monomers in a polymerization precursor liquid and the ratio of polymerizable fluorinated acrylate monomers in a polymerizable acrylate monomer composition, the mechanical properties and ionic conductivity of the finally obtained solid electrolyte can be controlled. The partially fluorinated solid electrolyte prepared by the preparation method provided by the application is stable and reliable, has higher safety, and has excellent mechanical properties and higher ionic conductivity. The partially fluorinated solid electrolyte provided by the application can be used for preparing a lithium ion battery with better safety performance and more excellent electrochemical performance.

An amido group-containing monomer composition contains 80.00 to 99.99 mass % of an amido group-containing monomer (a) of the following formula (1) and 0.01 to 20.00 mass % of a metal chelate complex (b) having carbonyl group as a ligand:wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrocarbon group having a carbon number of 1 to 6, R3 represents a hydrocarbon group having a carbon number of 1 to 23, and R4 represents hydrogen or a methyl group.

The invention discloses a 3D printing polyurethane elastomer as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The polyurethane elastomer is composed of a prepolymer containing a dynamic hydrazide urea bond and a hindered urea bond and a monomer containing primary amine, the prepolymer takes polyether polyol and diisocyanate as basic raw materials, a dynamic hydrazide urea bond hard segment is introduced into the prepolymer through a hydrazide chain extender, a side chain is introduced through glycidyl methacrylate, and the primary amine-containing monomer is prepared. A dynamic hindered urea bond and a photocuring group are introduced through an acrylate end-capping reagent, and a reactive diluent and a photoinitiator are matched to optimize the forming performance. In the preparation process, a prepolymer and a primary amine-containing monomer are mixed and then subjected to 3D printing forming, in the low-temperature stage, reversible exchange of dynamic hydrazide urea bonds and hindered urea bonds is promoted to heal interlayer defects, and in the high-temperature stage, the hindered urea bonds are triggered to break and react with primary amine to form a stable cross-linked network. The 3D printing polyurethane elastomer has excellent rebound resilience, mechanical strength and hydrophobic effect.

The present invention relates to the field of photoresist technology, and more particularly to an aqueous liquid photosensitive photoresist and a preparation method thereof. The aqueous liquid photosensitive photoresist comprises the following raw materials, in parts by weight: 50-70 parts of an acrylic resin emulsion, 2-5 parts of a monomer composition, 8-12 parts of ethoxylated trimethylolpropane triacrylate, 3-6 parts of a photoacid generator, 0.5-1.5 parts of a thickener, 1-3 parts of a modified perfluoropolyether carboxylic acid ammonium, 0.2-0.4 parts of an anti-cratering agent, and 20-24 parts of deionized water. The aqueous liquid photosensitive photoresist prepared by the present invention has excellent etching resistance and high resolution, and the preparation method is simple.

The invention discloses a high-temperature-resistant liquid crystal polymer substrate for ultrathin flexible display, which belongs to the technical field of flexible display and comprises a modified liquid crystal polymer and a functional additive dispersed in the modified liquid crystal polymer. The modified liquid crystal polymer is prepared by polymerizing a monomer composition, and is specifically prepared from 38 to 42 parts of p-hydroxybenzoic acid, 28 to 30 parts of 4, 4 '-biphenol, 5.6 to 6.0 parts of terephthalic acid, 4.4 to 5.0 parts of 2, 6-naphthalic acid, 2.7 to 3.3 parts of isophthalic acid, 9 to 11 parts of 2, 2-bis (3, 5-difluoro-4-hydroxyphenyl) hexafluoropropane, 4.5 to 5.5 parts of N, N'-dihydroxypyromellitic diamine, 9 to 11 parts of 9, 9-bis [4-(4-methoxycarbonyl phenoxy) phenyl] fluorene and 1, 2-bis (4-(4-methoxycarbonyl phenoxy) phenyl] fluorene. The component A is prepared from 5.5 to 6.5 parts of 1, 4-cyclohexanedimethanol; the functional additive comprises an azobenzene derivative, a hot acid generator and a hydrogen bond enhancer; through the synergistic effect of a specific monomer combination, a functional additive and an optimization process, the technical bottleneck that heat resistance, transparency, dimensional stability and flexibility of an existing material are difficult to consider at the same time is broken through.

Polyacrylate, characterized in that - the polyacrylate is based on the following monomer composition: a) 65 to 80 wt.% of at least one acrylic acid ester according to formula (I) CH2=CH-C(O)OR 1 (I), where R 1 represents a linear alkyl group having 1 to 4 C atoms; b) 10 to 20 wt.% of at least one acrylic acid ester according to formula (II) CH2=CH-C(O)OR 2 (II), where R 2 represents a phenoxyalkyl radical; c) 10 to 15 wt.% of at least one acrylic monomer according to formula (III) CH2=CH-C(O)OR 3 (III), where R 3 represents a hydrogen atom or a hydroxyalkyl radical with 1 to 4 carbon atoms: - the polyacrylate has a weight-average molecular weight of 600,000 to 1,200,000 g / mol; and - the polyacrylate was produced by free radical polymerization, ATRP, nitroxide / TEMPO-controlled polymerization or RAFT process.

The invention relates to the technical field of adhesive tapes, and discloses a preparation method of a foamed plastic adhesive tape with low odor, low VOC and high temperature resistance, and the foamed plastic adhesive tape sequentially comprises a transparent PET release film layer, a UV curing acrylic acid pressure-sensitive adhesive layer and a foamed plastic base material from top to bottom; the UV-cured acrylic pressure-sensitive adhesive layer is composed of an acrylic prepolymer, tackifying resin, a photoinitiator and a reactive diluting monomer. According to the preparation method of the foamed plastic adhesive tape with the low odor, the low VOC and the high temperature resistance, the foamed plastic adhesive tape adopts a three-layer structure of a transparent PET release film layer, a UV curing acrylic acid pressure-sensitive adhesive layer and a foamed plastic base material, the UV curing acrylic acid pressure-sensitive adhesive layer takes an acrylic acid prepolymer as a core, and is matched with an acrylic acid monomer diluent, tackifying resin and a photoinitiator; the adhesive layer is cured through the UV curing reaction, meanwhile, the sufficiency of UV curing is guaranteed through the transparent PET release film, residues of unreacted components are reduced, and the VOC emission and the odor level are reduced in combination with the characteristic of low volatile components of the pressure-sensitive adhesive layer.

Disclosed herein are amine containing copolymer compositions based on free radical and controlled radical polymerization of monomer compositions including an amine-derivatized alpha-methyl styrene (ADAMS) monomer according to structure (I): with k, R, R1, and R2 defined herein with one or more monomers selected from the group consisting of optionally substituted acrylates, methacrylates, acrylamides, methacrylamides, acrylonitriles, methacrylonitriles, vinyl ethers, N-vinyl amides, or combinations thereof. Further disclosed herein are methods of making and methods for using such copolymer compositions.

To provide a monomer composition comprising cyclocarbonate (meth)acrylate and glycerin tri(meth)acrylate that prevents the decomposition of glycerin tri(meth)acrylate during high-temperature storage and suppresses discoloration and thickening. [Solution] A monomer composition characterized by containing 94 to 99.8% by mass of a cyclocarbonate-containing (meth)acrylate (A) represented by formula (1), 0.01 to 5% by mass of glycerin tri(meth)acrylate (B), 0.001 to 0.5% by mass of a hydroxycarboxylic acid or its salt (C) with a molecular weight of 500 or less, and 0.0001 to 0.5% by mass of a polymerization inhibitor (D). JPEG2026047828000010.jpg3599 (In formula (1), R 1 is H or CH3, and R 2 is H or an alkyl group having 1 to 4 carbon atoms, R 3 (This refers to an alkylene group with 1 to 4 carbon atoms.)

Compositions and methods for inhibiting and retarding polymerization of monomeric compositions are described that use a naphthoquinone and an oxygenated aminophenol. When present in a monomer-containing composition, the combination of naphthoquinone and oxygen-containing aminophenol provides an unexpectedly beneficial anti-polymerization agent effect, thereby inhibiting the formation of unwanted fouling polymers. The anti-polymerization agent combination can be added to a hydrocarbon composition, such as petroleum, that can include a polymerizable component, such as styrene, wherein the hydrocarbon composition is purified or processed, such as under distillation.

The utility model belongs to the technical field of bridge construction, and particularly relates to an auxiliary temporary pier column for viaduct girder erection construction, which comprises a supporting main body, an auxiliary supporting body is arranged at the top of the supporting main body, and the supporting main body and the auxiliary supporting body form the auxiliary temporary pier column; the supporting body is composed of a plurality of supporting single bodies, the supporting single bodies are gradually increased from top to bottom, the top of each supporting single body is provided with a protruding part, the bottom of each supporting single body is provided with an inserting groove, and in every two adjacent supporting single bodies, the protruding part of the lower supporting single body is inserted into the inserting groove of the upper supporting single body; the auxiliary supporting body is composed of a plurality of auxiliary supporting single bodies, the bottom of the lowermost auxiliary supporting single body is provided with a clamping groove connected with the protruding part in a clamped mode, and the top of the uppermost auxiliary supporting single body is provided with a limiting groove for limiting the air cylinder. According to the pier column, the splicing height of the supporting body can be set according to actual requirements, construction is convenient, an original pier does not need to be punched, the pier column can be sequentially dismantled and recycled after construction is completed, and the pier column can be repeatedly used.

The present application relates to a resin composition for a molding device for tooth restoration. The resin composition comprises 10 to 50 parts by weight of a polyurethane acrylate oligomer having a functionality of no more than 4, 20 to 40 parts by weight of an acrylate monomer containing a morpholine group, 10 to 40 parts by weight of a polymerizable acrylate monomer composition, and 0.5 to 5 parts by weight of a photoinitiator, wherein the polymerizable acrylate monomer composition comprises 40 to 60 parts by weight of an alicyclic acrylate monomer and 40 to 60 parts by weight of an aliphatic acrylate monomer having an ether bond. The resin composition has a Shore hardness of no less than 70D and a bending strain of no less than 0.15 after curing. When applied to a molding device for tooth restoration, the resin composition can have high shape and dimensional accuracy, and can be easily demolded and completely removed without breaking after the tooth restoration is completed.

The present invention is directed to a plastic extension for a nail covering and a nail applique kit including at least one plastic extension, an adhesive including a UV gel a cyanoacrylate, a free radical curable monomer composition or a PSA and an optional processing aid.

The invention discloses a nuclear magnetic resonance hydrogen spectrum method for directly analyzing a high molecular weight hyaluronic acid structure and quantitative monomer composition. The method comprises the following steps: S1, dissolving a high-molecular-weight hyaluronic acid sample in D2O, adding NaOD, and uniformly mixing to obtain a sample solution; the concentration of the hyaluronic acid sample in the D2O is 0.5 to 2 mg / mL; the final concentration of the NaOD in the sample solution is 75 mmol / L; s2, performing a nuclear magnetic resonance hydrogen spectrum test on the sample solution to obtain a nuclear magnetic resonance hydrogen spectrum spectrogram; and S3, obtaining an integral area proportion of a hydrogen atom characteristic peak from the nuclear magnetic resonance hydrogen spectrum so as to directly quantify the composition molar ratio of the two monomers of the high-molecular-weight hyaluronic acid. The method provided by the invention not only can realize direct structural characterization of the high molecular weight HA, but also can realize direct quantification of the composition proportion of the two monosaccharides, and the quantitative result is high in precision and reproducibility.

This invention relates to a monomer composition for preparing superabsorbent polymers. The superabsorbent polymer is then incorporated into an absorbent article. The monomer composition for preparing superabsorbent polymers of this invention has a fast polymerization rate and therefore can minimize bubble loss during foam polymerization, thus providing a superabsorbent polymer with excellent absorption rate. Furthermore, the superabsorbent polymer prepared from the monomer composition for preparing superabsorbent polymers has high gel strength and therefore maintains its shape well even after water absorption, thus exhibiting excellent absorption performance despite external pressure.

The application relates to the technical field of polymers, and discloses a kind of polypropylene and its application, a kind of method and device for continuously preparing polypropylene.The method comprises the following steps: (1) introducing a first monomer composition into a first reactor to carry out a first polymerization reaction in the presence of catalyst I, to obtain a first stream; (2) introducing the first stream and a first part of a second monomer composition into a second reactor to carry out a second polymerization reaction in the presence of catalyst II, to obtain a second stream; (3) introducing the second stream and a second part of the second monomer composition into a first gas-phase reactor to carry out a third polymerization reaction, to obtain a third stream; (4) introducing the third stream and a third part of the second monomer composition into a second gas-phase reactor to carry out a fourth polymerization reaction.The polypropylene material prepared by the method has good shear resistance and dimensional stability, and also has excellent aging resistance.

An object is to provide a monomer composition to obtain a methacrylic resin composition having excellent light stability or long-term thermal stability while maintaining transparency and heat resistance originally possessed by a methacrylic resin; a methacrylic resin composition and a production method therefor, and a molded resin object containing the methacrylic resin composition. The object is achieved by a monomer composition containing methyl methacrylate and 1 to 10000 ppm by mass of an ester compound having a specific α-hydrogen (component A1), an α,β-unsaturated carbonyl compound (component A21), an α,β-unsaturated carboxylic acid ester (component A22), or a pyrazine compound (component A3). In addition, the above object is achieved by a methacrylic resin composition using the monomer composition and a production method therefor, and a molded resin object containing the methacrylic resin composition.

The invention relates to the technical field of traditional Chinese medicines, in particular to a dropping pill-containing traditional Chinese medicine composition with a refreshing and refreshing throat and a preparation method thereof. The traditional Chinese medicine crude extract compatibility mode is broken through; a standardized traditional Chinese medicine monomer composition prepared from the following raw materials in parts by weight: 2 to 4 parts of camphor, 40 to 50 parts of borneol, 0.5 to 1.5 parts of menthone, 6 to 8 parts of isomenthone, 0.5 to 1.5 parts of menthyl acetate ketone, 20 to 22 parts of menthol and 20 to 25 parts of mono-ammonium glycyrrhizinate is innovatively constructed. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 2 to 4 parts of camphor, 40 to 50 parts of borneol, 0.5 to 1.5 parts of menthone, 6 to 8 parts of isomenthone, 0.5 to 1.5 parts of menthyl acetate ketone, 20 to 22 parts of menthol and 20 to 25 parts of mono-ammonium glycyrrhizinate. Compared with the original medicinal preparation, the oral drop pill is clear in chemical components, clear in action mechanism, convenient for quality control and standardized production, and the like. The effective component composition can achieve an anti-inflammatory effect equivalent to that of an original preparation by regulating and controlling expression of TNF-alpha / IL-6 inflammatory factors, reducing pathological damage and the like, and accurate correspondence of'component-target-effect 'is successfully realized.

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.

The invention is related to a process for synthesizing a polymer for various uses including as a tackifying composition. The process comprises providing a reactant mixture for conducting multistep reactions to produce products with high selectivity and yields. The reactant mixture comprises a first compound comprising at least one carbon-carbon double bond or a precursor therefor; a heat transfer fluid; and at least one stabilizer. The process comprises reacting the first compound or the precursor with a first intermediate mixture in the presence of a heat transfer agent to provide a monomer composition. Optionally the obtained monomer composition may be fractionated. Then, the process involves polymerising one or more fractions of the monomer composition to provide the polymer composition that can be tuned to be tackifying or longer chain.

The invention discloses a green marine antifouling coating based on a urushiol-based eutectic solvent and a preparation method of the green marine antifouling coating, and belongs to the technical field of natural polymer antifouling coatings. The coating is composed of nano cuprous oxide, an auxiliary antifouling agent, an antibacterial agent, an auxiliary agent, a cross-linking agent, a photoinitiator, a urushiol-based eutectic solvent and an acrylate monomer. The preparation method of the coating is simple and convenient and comprises the following steps: mixing the components in proportion, coating the surface of a base material with the mixture, and curing by ultraviolet irradiation and baking. The coating is green and environment-friendly, free of emission of volatile organic compounds, high in raw material utilization rate, high in coating adhesion, good in mechanical property, synergistic and lasting in antifouling property, suitable for the field of marine antifouling and good in industrial popularization prospect and ecological application value.

The method produces hollow particles which have a high void ratio, which can reduce the residual amount of a sparingly water-soluble solvent used in the production process, and which are less likely to collapse. The method for producing hollow particles which comprise a shell and a hollow portion and which have a void ratio of 50% or more and 90% or less, wherein a suspension treatment of a mixture liquid containing a polymerizable monomer for shell, a polar resin, a hydrocarbon solvent, a sparingly water-soluble inorganic metal salt as a dispersant, and an aqueous medium is carried out to prepare a suspension in which droplets of a monomer composition containing the polymerizable monomer for shell, the polar resin and the hydrocarbon solvent are dispersed in the aqueous medium; a polymerization reaction of the suspension is carried out; and the hydrocarbon solvent is removed from the obtained hollow particles.

This invention provides polypeptide ester etheramine random polymers and methods for preparing them. [Solution] The polypeptide ester etheramine random polymer of the present invention is a random copolymer of an amino acid monomer and an alkylene oxide. In the present invention, copolymerization of an amino acid monomer and an alkylene oxide monomer is achieved by a one-step method of mixed monomers using a transition metal or rare earth metal salt as a catalyst. The random copolymer product has a controllable molecular weight, a narrow molecular weight distribution, and an adjustable copolymer composition. Furthermore, the random copolymer product has excellent solubility, is biodegradable, easily modifiable with functional groups, has excellent processability, and has excellent biocompatibility, making it promising for future applications in the biomedical field.

We provide a system for screening compounds. [Solution] This application provides beads with covalently attached compounds and covalently attached DNA barcodes, as well as methods for using such beads. The beads have many substantially identical copies of compounds and many substantially identical copies of DNA barcodes. The compounds consist of one or more chemical monomers, and the DNA barcodes take the form of barcode modules, each module enabling the identification of corresponding and corresponding chemical monomers. The nucleic acid barcodes may have a chain-like or orthogonal structure. Methods for sequencing bead-bound nucleic acid barcodes, methods for cleaving compounds from beads, and methods for evaluating the biological activity of released compounds are provided.

The invention relates to the technical field of concrete admixtures, in particular to an emulsion type polycarboxylate superplasticizer and a preparation method thereof. The water reducing agent is formed by polymerizing a modified polyether monomer and a self-reaction type emulsifying monomer through free radical copolymerization under the action of an initiator and a chain transfer agent, the self-reaction type emulsifying monomer combination is composed of A-type monomers, B-type monomers and C-type monomers, or composed of A-type monomers, B-type monomers and D-type monomers, or composed of A-type monomers, C-type monomers and D-type monomers. The water reducing agent does not need to be added with an emulsifier, only the self-reaction type emulsifying monomer needs to be introduced into a reaction system, and the self-emulsifying capacity and high reaction activity of the self-reaction type emulsifying monomer are utilized, so that the air entraining capacity of the polycarboxylic acid water reducing agent in concrete can be improved, the viscosity of the concrete is reduced, and the dispersity of the concrete is improved, and field construction is facilitated; meanwhile, it is guaranteed that the concrete has a good machine discharging state, the problems of bleeding, segregation and bottom grabbing do not occur, the concrete does not have the stone exposure phenomenon, and the wrapping performance is good.