69 results about "Methacrylate polymers" patented technology

The invention belongs to the technical field of medical wound materials, and relates to conductive nanofiber aerogel for preventing and treating stress injury and a preparation method thereof. The conductive nanofiber aerogel comprises nanofiber aerogel, a polypyrrole conductive network and a polydopamine hydrophilic layer, wherein the polypyrrole conductive network and the polydopamine hydrophilic layer are deposited in the nanofiber aerogel; the nanofiber aerogel is composed of nanofibers containing a first methylacryloylated polymer and polylactic acid and a second methylacryloylated polymer, the nanofibers are in staggered lap joint to form a three-dimensional skeleton, and the lap joint is wrapped by the second methylacryloylated polymer. The preparation method comprises the following steps: preparing nanofiber aerogel, and sequentially infiltrating the nanofiber aerogel into a pyrrole / FeCl3. 6H2O solution and a dopamine hydrochloride / Tris-HCl solution to react. The conductive nanofiber aerogel has good structural stability, biological safety, hydrophilic imbibition and pressure / seepage sensing capability, and can play an efficient role in prevention and treatment of pressure injury.

The invention provides antibacterial and antifogging glasses wiping cloth and a preparation method thereof, and relates to the technical field of glasses cleaning. Comprising a base material layer, the base material layer is a fiber fabric internally provided with a micropore structure, the fiber fabric is formed by blending sea-island fibers and bamboo charcoal fibers, an antibacterial layer is arranged on the surface of the base material layer, an anti-fog layer is sprayed on the surface of the base material layer, and the antibacterial layer is formed after the base material layer is soaked in composite antibacterial liquid and cured. The composite antibacterial liquid comprises quaternary ammonium salt modified chitosan and polyhexamethylene biguanide, the quaternary ammonium salt modified chitosan is covalently bonded with the fiber surface through an epoxy group cross-linking agent, the polyhexamethylene biguanide is dispersed in the microporous structure, and the anti-fog layer is formed by a sulfobetaine methacrylate polymer grafted on the surface of the base material layer. And a modified nano TiO2-SiO2 core-shell structure is embedded in the zwitterionic polymer. The 24-hour antibacterial rate of the glasses wiping cloth is greater than 99%; after 50 times of standard washing, the antibacterial rate is still greater than or equal to 95%; the antifogging duration is longer than or equal to 33 days and far exceeds that of a temporary coating.

This invention relates to the field of ion-conducting membrane technology, and particularly to a wedge-shaped amphiphilic molecule, a biomimetic ion-conducting membrane, and its preparation method. The biomimetic ion-conducting membrane utilizes the self-assembly behavior of the wedge-shaped amphiphilic molecule to form a columnar mesocrystalline phase containing transport channels. This columnar structure is fixed within a membrane framework composed of methacrylate polymers using ultraviolet graft copolymerization to form an ion-transfer membrane. This membrane exhibits strong ion selectivity and conductivity, and its mechanism of action is similar to that of biological cell membranes. It can be used for the transport and separation of microparticle materials such as ions, small molecules, and micro-electronic conductors, showing broad application prospects in fields such as biology, medicine, and environmental analysis. Furthermore, its ion conductivity and chemical stability also demonstrate its potential application in proton exchange membrane fuel cells.

The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes a) 40-60 parts by weight of a monofunctional (meth)acrylate monomer, per 100 parts of the total photopolymerizable composition; b) a photoinitiator; and c) a polymerization reaction product of components. A cured homopolymer of the monofunctional (meth)acrylate monomer has a glass transition temperature of 125 degrees Celsius or greater. The polymerization reaction product of components includes i) a diisocyanate; ii) a hydroxy functional methacrylate; iii) a polycarbonate diol; and iv) a catalyst. The polymerization reaction product includes a polyurethane methacrylate polymer. Often, the polycarbonate diol has a number average molecular weight of greater than 1,000 grams per mole (g / mol) or a weighted average of all polycarbonate diols present in the components has a Mn of greater than 1,000 g / mol; alternatively, the polyurethane methacrylate polymer has a weight average molecular weight of 8,000 g / mol or greater. An article is also provided including the photopolymerizable composition reaction product. Further, the present disclosure provides articles and methods of making articles. Methods are additionally provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.

This method for manufacturing a semiconductor device includes the steps of: preparing a laminate having a dicing-die bonding integrated film including a base material layer, a pressure-sensitive adhesive layer and an adhesive layer, and a plurality of semiconductor chips obtained by dicing a semiconductor wafer; dicing the adhesive layer by expanding the adhesive layer of the laminate under a cooling condition to manufacture a semiconductor chip with an adhesive piece; picking up the semiconductor chip with the adhesive piece from the pressure-sensitive adhesive layer; and bonding the semiconductor chip with the adhesive piece having the semiconductor chip and the adhesive piece to a support member via the adhesive piece. The adhesive layer contains a thermosetting resin component and an elastomer and may further contain an inorganic filler. The content of the inorganic filler is 0-5% by mass based on the total amount of a film adhesive. The elastomer includes a predetermined (meth) acrylate polymer.

To provide a composition for forming a resist underlayer film that enables the formation of a desired resist pattern, and a method for producing a resist pattern and a method for producing a semiconductor device, each of which uses the composition for forming a resist underlayer film.SOLUTION: A composition for forming an EUV resist underlayer film having a basic organic group substituted with a protective group on a side chain of a (meth)acrylic polymer and further including a solvent, the composition not including a polymer other than the (meth)acrylic polymer. The organic group is an acyloxy group that has an amino group substituted with a protective group, or that has a nitrogen-containing heterocycle substituted with a protective group.SELECTED DRAWING: None

The present invention relates to a (meth)acrylic composition, a process for preparing the (meth)acrylic composition and uses of such a (meth)acrylic composition. In particular the present invention relates to a (meth)acrylic composition with increased pot-life, a process for preparing the (meth)acrylic composition and uses of such a (meth)acrylic composition. The invention also relates also to a (meth)acrylic polymeric composite material, comprising or made of a (meth)acrylic composition with increased pot-life, a method for preparing such (meth)acrylic composite material comprising or made of a (meth)acrylic composition with increased pot-life and an object comprising such (meth)acrylic polymeric composite material comprising or made of a (meth)acrylic composition with increased pot-life.

The present invention provides an adhesive composition with excellent reusability, a recovery method for recovering components from the adhesive composition, and a reuse method for reusing components from the adhesive composition. [Solution] The monomer units that make up the polymer are given by the following formula (1) [Formula 1] TIFF2026136719000007.tif44153 An adhesive composition comprising a (meth)acrylic acid ester polymer (A) containing an ethylene carbonate-containing monomer having the ethylene carbonate structure shown in [figure], and a cyclic carbonate compound (B) other than the (meth)acrylic acid ester polymer (A) having the ethylene carbonate structure.

Through the matching of the composite pigment, the design of the core-shell structure, the coating of the conductive polymer, the coating of the non-crosslinked trifluoroethyl methacrylate polymer and the modification of the three-stage silicon dioxide, the contradiction among the charge stability, the erasing resistance, the weather resistance and the flowability of the carbon powder is synergistically solved, the atomization degree is reduced, and the resolution ratio of the carbon powder is improved.

The invention discloses a modified binder for a lithium ion battery pole piece, the lithium ion battery pole piece as well as a preparation method and application of the lithium ion battery pole piece, and relates to the field of battery materials. The modified binder comprises an acrylated or methacrylated polymer binder, the polymer binder contains hydroxyl and / or carboxyl, and meanwhile, the lithium ion electrode plate is subjected to pre-lithiation treatment by adopting a lithium naphthalene reagent. The modified binder in the electrode slurry is subjected to acryloylation treatment in advance, the electrode plate is subjected to pre-lithiation treatment by adopting the lithium naphthalene reagent, in-situ crosslinking of the modified binder caused by anionic polymerization is realized by utilizing the lithium naphthalene reagent, and meanwhile, the requirements of high mechanical strength and uniform dispersity of the binder and efficient pre-lithiation of the electrode are met; the first irreversible capacity loss of the battery is remarkably reduced, the coulombic efficiency and the cycling stability of the battery are improved, additional crosslinking steps or complex reaction conditions are not needed, and the preparation cost and the process difficulty are reduced.

Mucoadhesive microgel compositions, which include an active agent (such as HB-EGF), are provided. Aspects of the invention include a microgel comprising a crosslinked poly(ethylene glycol) methyl ether methacrylate polymer comprising a mucoadhesive functionality. Also provided are methods of making and using the mucoadhesive microgel compositions, e.g., in therapeutic applications. In one embodiment, HB-EGF loaded mucoadhesive microgel compositions are provided, e.g., for prevention or treatment of mucositis conditions, such as therapy induced oral mucositis conditions.

The object of the present invention is to provide a viscosity index improver that, in a lubricating oil composition using ester oil, exhibits excellent viscosity-enhancing effect at 100°C, can lower the kinematic viscosity at 40°C, and has a high viscosity index-enhancing effect while considering the environment, such as biodegradability and environmental toxicity. [Solution] A viscosity index improver containing a poly(meth)acrylate polymer (A), an ester oil (B), and an ester oil (C), wherein the solubility parameter (SP value) of the poly(meth)acrylate polymer (A) is 8.95 to 9.15 (cal / cm³). 3 ) 1 / 2 The ester oil (B) is a diesterified product, and the solubility parameter (SP value) of the ester oil (B) is 8.80-8.95 (cal / cm³). 3 ) 1 / 2 The ester oil (C) is a glycerol triester, and the solubility parameter of the ester oil (C) is 8.90-9.00 (cal / cm³). 3 ) 1 / 2 A viscosity index improver.

The invention relates to the technical field of papermaking, in particular to a preparation method of ultrathin high-strength paper-based adhesive tape base paper. The preparation method comprises the following steps: mixing softwood pulp and hardwood pulp, forming base paper by adopting a double-net dehydration process, and forming a covalent cross-linked network in a paper sheet by adopting a cellulose reactive coupling agent with an o-benzoquinone structure and a multi-sulfydryl compound based on a sulfydryl-benzoquinone click chemistry and interface supramolecular assembly multi-bonding enhancement system; meanwhile, a dual intelligent enhancement system based on a biomacromolecule self-assembly body and a dynamic metal coordination network is established, and dynamic reversible crosslinking is constructed through a polyelectrolyte compound and a Fe < 3 + >-tannic acid coordination network; a multifunctional surface treatment technology combining a zwitterionic polymer brush and bionic in-situ mineralization is developed, a sulphobetaine methacrylate polymer brush grows through a surface-initiated atom transfer radical polymerization method, amorphous silicon dioxide is induced to be mineralized, and the adhesive tape body paper prepared through the method is high in strength.

A dryer sheet including: a nonwoven fibrous substrate; a fabric softener composition engaged with the nonwoven fibrous layer, wherein the fabric softener composition includes: a fabric softening active; a clay; and delivery particles including a core and a polymer wall surrounding the core; wherein the core includes: a benefit agent; and about 5% to about 55% partitioning modifier by weight of the of core; wherein the polymer wall includes a (meth)acrylate polymer derived, at least in part, from one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers, the one or more oil-soluble or oil-dispersible multifunctional (meth)acrylate monomers or oligomers having at least three radical polymerizable functional groups, wherein at least one of the radical polymerizable groups is acrylate or methacrylate, wherein the core and the polymer wall are present at a weight ratio of from about 96:4 to about 99.5:0.5.

Provided is a graft copolymer comprising a (meth)acrylate ester-based polymer block (A) having a reactive silicon group represented by the formula: -SiR1 3-aXa, and a (meth)acrylate ester-based polymer block (B) having a number average molecular weight of 7,000 or more. The (meth)acrylate ester-based polymer block (A) and the (meth)acrylate ester-based polymer block (B) are bonded in the order of A-B-A. A reactive silicon group equivalent in the graft copolymer is 0.15 mmol / g or more. A content of an alkyl (meth)acrylate ester contained in the polymer block (A), in which the carbon number of the alkyl is 7 or more, is 0-10 wt% in the graft copolymer. A content of an alkyl (meth)acrylate ester contained in the polymer block (A), in which the carbon number of the alkyl is 3 or less, is 25 wt% or more in the graft copolymer.

The present invention relates to (meth)acrylic compositions containing recycled materials, methods for preparing (meth)acrylic compositions, and uses of such (meth)acrylic compositions. In particular, the present invention relates to (meth)acrylic compositions containing recycled materials, either in polymeric or monomeric form, or both, methods for preparing (meth)acrylic compositions, and uses of such (meth)acrylic compositions. The present invention also relates to (meth)acrylic polymer composites containing or made from (meth)acrylic compositions containing recycled materials, methods for preparing such (meth)acrylic polymer composites containing or made from (meth)acrylic compositions containing recycled materials, and articles containing such (meth)acrylic polymer composites containing or made from (meth)acrylic compositions containing recycled materials.

In this invention, fluidity suitable for producing a dental member by vat photopolymerization is provided, and adhesion between the dental member and a liner material or another member corresponding to the liner material is excellent even after the dental member is used in an oral cavity for a long period of time. This curable composition for three-dimensional stereolithography comprises: (A) 100 parts by mass of a (meth)acrylate-based polymerizable monomer component that contains a polyfunctional (meth)acrylate-based polymerizable monomer and contains no methyl (meth)acrylate; (B) 0.7-220 parts by mass of a monofunctional (meth)acrylate polymer that has a number average molecular weight of 1,000-50,000 as measured by gel permeation chromatography; and (C) a photopolymerization initiator.

The application discloses an enzyme response self-assembly polypeptide modified methacrylating polymer and a preparation method and application thereof, and the enzyme response self-assembly polypeptide modified methacrylating polymer has a structure of formula 1. The application converts an endogenous tissue-specific marker alkaline phosphatase concentration gradient into a dynamic gradient evolution of the mechanical properties of a scaffold. By introducing an enzyme response self-assembly polypeptide into a methacrylating polymer structure, the scaffold is subjected to molecular level dynamic self-assembly under the catalysis of phosphatase, and a continuous mechanical gradient is formed from a cartilage region to a subchondral bone region. The process does not require external intervention and is completely regulated by a local microenvironment, thereby real-time adapting to the dynamic requirements of 'early proliferation-late differentiation' of bone cartilage repair. Compared with the prior art, the application not only breaks through the mismatch between a static gradient and a dynamic microenvironment, but also precisely regulates mechanical signals at a molecular scale, and significantly improves the spatial specificity and time synchronism of stem cell differentiation.

Disclosed is a (meth)acrylate polymer including a structural unit derived from a (meth)acrylate having an epoxy group. The (meth)acrylate polymer satisfies at least one of requirements A, B, and C.　Requirement A: The content of the structural unit derived from a (meth)acrylate having an epoxy group is 6 mass% or higher with respect to all the structural units of the (meth)acrylate polymer.　Requirement B: The (meth)acrylate polymer has an epoxy value of 0.40 eq / kg or greater.　Requirement C: The (meth)acrylate polymer gives an infrared absorption spectrum in which, when the area of an absorption peak derived from the antisymmetric stretching of an epoxy group is expressed by P(A) and the area of an absorption peak derived from the stretching vibration of a carbonyl group is expressed by P(B), then P(A) and P(B) satisfy the following expression (1).　(1): P(A) / P(B)≥0.0055

The present invention provides, inter alia, a method of producing a low molecular weight dispersant polymethacrylate polymer ("LMW DPMA") and the LMW DPMA itself, as well as the use of the LMW DPMA in a lubricating composition, and a method for lubricating an internal combustion engine, as disclosed herein.

The invention relates to the field of building industry, in particular to a methacrylate waterproof coating containing core-shell structure microspheres and a preparation method of the methacrylate waterproof coating, modified micro-nano rigid materials are used as seeds, and the methacrylate waterproof coating containing the core-shell structure microspheres is obtained through control, coupling and graft polymerization reaction of a polymerization process. The core-shell structure microsphere sequentially comprises an inorganic rigid particle layer (core), a silane coupling layer, a methacrylate polymer layer, an acrylate polymer layer and an acrylic polymer layer from inside to outside, the particle size D50 is 10-1000 nm, the shell is excellent in viscoelasticity and can be subjected to toughness deformation filling, the core has high strength to resist stress, and the service life of the core-shell structure microsphere is prolonged. The waterproof coating prepared from the emulsion containing the core-shell structure microspheres ensures that the microspheres not only can be embedded into pores and block building cracks, but also are not easy to fall off, and the waterproof effect is excellent.

The present invention relates to a window sash composition having excellent heat resistance. In one embodiment, the window sash composition comprises chlorinated polyvinyl chloride and a silicone-acrylic impact modifier, wherein the silicone-acrylic impact modifier comprises a core containing a siloxane polymer and a shell containing a (meth)acrylic polymer.

The present invention provides an emulsion capable of forming a structure having a porous membrane, a structure, and a method for manufacturing the structure. [Solution] The monomer units that make up the polymer are given by the following formula (1) TIFF2026070326000006.tif55132 (In the formula, R 1 R is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. 2 R is an alkylene group having 1 to 20 carbon atoms. 3 An emulsion containing a (meth)acrylic acid ester polymer as a dispersed phase, which includes monomer units derived from a silyl group-containing acrylic monomer represented by (where represents a hydrogen atom or a methyl group), and which is intended for use as a material for a structure having a porous membrane.

Provided are an adhesive composition with which it is possible to suppress the occurrence of adhesive residue and tape lifting and is particularly suitable in semiconductor, etc., production processes, and an adhesive sheet using the same. This adhesive composition contains a (meth)acrylic polymer (A) containing an alkyl (meth)acrylate monomer (a), a carboxylic acid-containing vinyl monomer (b), and a hydroxyl group-containing vinyl monomer (c) as constituent units, and a crosslinking agent (B), wherein (a) contains butyl acrylate, and the contents of the butyl acrylate, acrylic acid, and methacrylic acid are within fixed ranges. Also provided is an adhesive sheet using the same.

We provide thermoplastic and transparent (meth)acrylate polymers. [Solution] A flame-retardant thermoplastic (meth)acrylate polymer comprising units derived from oxaphosphaphenanthrene oxide-acrylate monomers and units derived from (meth)acrylate monomers. Furthermore, the proportion of oxaphosphaphenanthrene oxide-acrylate monomers is in the range of 10 to 30 mol%, based on the mixture of all monomers.

The invention relates to a photocrosslinkable composition comprising: - a monofunctional (meth)acrylate monomer, - a functionalized core-shell filler, - a (meth)acrylate polymer, preferably a (meth)acrylate oligomer, chosen from urethane (meth)acrylate polymers, polyester (meth)acrylate polymers, epoxy (meth)acrylate polymers, and mixtures thereof, and - a photoinitiator. The present invention also relates to the use of the composition according to the invention as an adhesive, coating, UV ink or in 3D printing. The present invention also relates to a method for assembling substrates comprising: - coating, on at least one surface of the substrates to be assembled, the composition according to the invention, then - bringing the substrates into contact, then - crosslinking the composition. Finally, the present invention relates to an article comprising the composition according to the invention, said composition binding at least two substrates of said article. Figure for abstract: none.

A photopolymer composition for hologram formation, comprising: a polymer matrix comprising a siloxane-based polymer and a (meth)acrylate polymer containing one or more reactive functional groups in the side chains, a holographic recording method, and an optical element are provided.

(Meth)acrylic composition, POLYMERIC composite material obtained from such a composition, process for the production OF SAID COMPOSITION AND SAID MATERIAL, and uses thereof. The present invention relates to a (meth)acrylic composition suitable for (meth)acrylic polymer compositions and composites, its preparation process, and its use. In particular, the present invention relates to a (meth)acrylic composition which, once polymerized, possesses a certain heat resistance and is suitable for (meth)acrylic composites used at higher temperatures. More particularly, the present invention relates to a (meth)acrylic composition suitable for the preparation of (meth)acrylic polymer composite compositions and materials.The present invention also relates to a process for preparing and using such a (meth)acrylic composition, as well as to (meth)acrylic polymeric composite compositions and materials prepared from such a (meth)acrylic composition. Furthermore, the invention also relates to a manufacturing process and the uses of such a composite material, which can be applied in numerous industrial sectors.

The present invention relates to, a curable photochromic composition that includes: (a) a photochromic compound; (b) a hydrazide functional material having at least two hydrazide groups that are reactive with carbonyl groups selected from ketone groups and aldehyde groups; (c) a first carbonyl-functional component including a (meth)acrylate polymer having at least two carbonyl groups that are reactive with hydrazide groups; and (d) at least one of, (d1) a second carbonyl-functional component having at least one carbonyl group that is reactive with hydrazide groups, and / or (d2) a non-reactive component. The non-reactive component is free of functional groups that are reactive with the hydrazide functional material, the first carbonyl-functional component, and the second carbonyl-functional component. The present invention also relates to an article that includes: a substrate; and a photochromic layer over at least one surface of the substrate, where the photochromic layer is formed from the curable photochromic composition of the present invention.

A curable composition which is obtained from: a) at least one epoxy multifunctional (meth)acrylate compound (A); b) at least one monofunctional (meth)acrylate monomer (B); c) at least one multifunctional (meth)acrylate polymeric compound (C) which is the reaction product of at least one hydroxy functional polyether (PE) which has a weight average molecular weight (Mw) in the range from 1000 to 5000 g / mol; with i. either, at least one polyisocyanate (P) and at least one compound (EH) containing at least one hydroxyl group and at least one ethylenically unsaturated group; or ii. at least one compound (EA) containing at least one carboxylic acid group and at least one ethylenically unsaturated group; and d) optionally, at least one multifunctional (meth)acrylate monomer (D); wherein the curable composition comprises no greater than 20 wt.% of the at least one multifunctional (meth)acrylate polymeric compound (C), based on the total weight of the curable composition.