58 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.

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.

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.

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.

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.

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.

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.

The present invention addresses the problem of providing an adhesive tape which is unlikely to exhibit adhesive bleed or to become detached over a long period of time, and which has high adhesive force in a low-temperature environment.　One embodiment of the present invention is an adhesive tape comprising: a base material layer containing a polyvinyl chloride resin; and a rubber-based adhesive agent layer provided on at least one surface of the base material layer. The rubber-based adhesive agent layer contains 25-45 mass% of a rubber component, 5-25 mass% of a (meth)acrylic polymer, and 40-60 mass% of a tackifier. The rubber component is at least one selected from the group consisting of natural rubber, modified natural rubbers, and styrene-butadiene rubbers. The glass transition temperature of the (meth)acrylic polymer is 45°C or higher.

The present invention provides an adhesive composition, an adhesive, an adhesive sheet, and a display body that can effectively prevent and inhibit migration. The present invention provides an adhesive composition containing a (meth)acrylate polymer (A), a rust preventive (B), and a long-chain alkyl amine (C); an adhesive crosslinked from the adhesive composition; and an adhesive sheet (1) provided with two release sheets (12a), (12b) and an adhesive layer (11) held by the release sheets (12a), (12b) in contact with the release surfaces of the two release sheets (12a), (12b), and the adhesive layer (11) is composed of the above-mentioned adhesive.

The present disclosure is directed to a core-shell particle comprising a polymeric core comprising a biodegradable (meth)acrylate polymer, and a first shell surrounding said core. The present disclosure is also directed to a to a method of making the plurality of core-shell particles.

To provide an adhesive composition excellent in processability, transparency and reworkability, and to provide an adhesive sheet, an optical member and a display device.SOLUTION: A (meth) acrylic polymer (A) having a reactive functional group and having a weight average molecular weight of 650,000 or more and less than 1.5 million, and a constituent unit derived from t-butyl methacrylate at a ratio of 15% by mass or more and 87% by mass or less with respect to all constituent units, A (meth) acrylic polymer (B) having a glass transition temperature of 105 °C or higher and 150 °C or lower and a weight average molecular weight of 100,000 or more and less than 500,000, and a crosslinking agent, in which a content of the (meth) acrylic polymer (B) is 1 part by mass or more and 40 parts by mass or less with respect to 100 parts by mass of the (meth) acrylic polymer (A), and applications thereof.SELECTED DRAWING: None

To provide a dicing tape or the like capable of making it compatible that a semiconductor chip can be satisfactorily manufactured by making a semiconductor wafer into small pieces, and that satisfactory pickup properties can be exhibited.SOLUTION: The dicing tape includes a base material layer and an adhesive layer laminated on one surface of the base material layer, wherein the adhesive layer contains a (meth) acrylic polymer containing an acrylate-methacrylate copolymer, and the ratio of the acrylate-methacrylate copolymer in the (meth) acrylic polymer is 50% or more.SELECTED DRAWING: Figure 1

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. The composition for forming an EUV resist underlayer film has a basic organic group substituted with a protective group on a side chain of a (meth)acrylic polymer and further includes a solvent, but does not include 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.

A composition comprising a multistage polymer and a (meth) acrylic polymer is provided.SOLUTION: In particular the present invention relates to a composition comprising a multistage polymer in the form of polymer particles made by a multistage process and a (meth) acrylic polymer wherein the (meth) acrylic polymer has an intermediate molecular weight. More particularly, the present invention relates to a polymer composition comprising polymer particles made by a multistage process comprising at least two stages and a (meth) acrylic polymer of intermediate molecular weight, to a process for its preparation, to its use as impact modifier in a polymer composition for composites comprising a thermoset or thermoplastic polymer and the composition and to articles comprising it.SELECTED DRAWING: None