17 results about "Dimethacrylate ester" patented technology

This invention relates to a collagen-moisturizing soft hydrophilic contact lens, belonging to the field of contact lens technology. The collagen-moisturizing soft hydrophilic contact lens of this invention comprises the following components: hydroxyethyl methacrylate, N-vinylpyrrolidone, N,N-dimethylacrylamide, methyl acrylate, collagen, polyethylene glycol 400, polyvinylpyrrolidone K90, azobisisobutyronitrile, azodimethylvaleronitrile, benzoyl peroxide, ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, and divinylbenzene. This invention solves the problems of rapid decay of moisturizing effect, poor biocompatibility, and low long-term wearing comfort of existing contact lenses through the synergistic effect of a complex hydrophilic monomer system, collagen functional components, a gradient complex initiation system, and a multi-dimensional complex cross-linking system.

Provided are: a laminated iron core in which an Fe-N-based alloy plate is used as a soft magnetic material plate, and an electrically insulating layer / interlayer insulation layer are formed and laminated while maintaining the magnetic properties of the Fe-N-based alloy plate; and a method for manufacturing the same. A laminated iron core according to the present invention is a laminated iron core in which a plurality of soft magnetic material plates are laminated with an electrically insulation layer therebetween, the laminated iron core being characterized in that: the soft magnetic material plates are Fe–N-based alloy plates containing Fe as a main component and containing a N component; the electrically insulation layer is a layer having a predetermined resin material as a matrix; and the predetermined resin material is at least one selected from an epoxy adhesive, a dimethacrylate adhesive, an acrylic adhesive, an ene–thiol adhesive, and a methacrylate ester adhesive.

The application relates to the technical field of microneedles, in particular to a soluble microneedle. The soluble microneedle comprises a substrate and a drug-loaded needle body, the drug-loaded needle body containing an active drug, sodium hyaluronate and trehalose; the weight-average molecular weight of the sodium hyaluronate is 150 kDa-280 kDa; the substrate is formed by a photocuring resin monomer, a photoinitiator and a solvent, and the photocuring resin monomer comprises diurea alkane dimethyl acrylate and / or triethylene glycol dimethyl acrylate. The soluble microneedle of the application is beneficial to preventing the active drug from diffusing to the substrate, improving the cumulative penetration rate, ensuring the interface bonding strength of the drug-loaded needle body and the substrate and reducing needle breakage by adopting the drug-loaded matrix containing sodium hyaluronate with a specific molecular weight and the substrate with a specific material.

The present invention provides a method for producing a product containing high-purity lactoferrin that can be carried out using relatively simple steps, offers high selectivity and cost efficiency, and is highly adaptable to industrial production. [Solution] A method for producing a product containing lactoferrin in high purity, comprising the steps of: contacting a raw material containing lactoferrin and β-lactoglobulin with an anion exchange resin to selectively adsorb β-lactoglobulin onto the anion exchange resin; and recovering the permeate obtained by permeating through the anion exchange resin, wherein the constituent units of the anion exchange resin are derived from a specific dimethacrylate compound and a specific vinyl compound or a specific methacrylate compound.

The present invention provides a dual-function (meth)acrylate-containing composition capable of realizing a cured product having high transparency and high surface hardness, and a curable composition and a cured product using the same. The dual-function (meth)acrylate-containing composition of the present invention comprises at least a spiroglycol di(meth)acrylate represented by the following formula (1), wherein the spiroglycol di(meth)acrylate represented by the formula (1) is included in an amount of 90.0 mass% or more and 99.9 mass% or less with respect to the total solid content of the dual-function (meth)acrylate-containing composition, and the content ratio of the spiroglycol mono(meth)acrylate represented by the following formula (2) is 0.1 mass% or more and 10.0 mass% or less with respect to the total solid content of the dual-function (meth)acrylate-containing composition. (In the above formulas (1) and (2), R1 is a hydrogen atom or a methyl group.)

The present invention provides a cup-shaped particle comprising a first polymer and a second polymer; wherein the first polymer is a biodegradable polymer; the second polymer is a crosslinked copolymer of two or more different methacrylate monomers and at least one crosslinking agent, wherein the at least one cross-linking agent comprises one or more dimethacrylates; and wherein the cup has a cavity having an opening of at least 50 nm in size.

The invention belongs to the technical field of biological pharmacy, and discloses a neuron-targeted polymer lipid hybrid nano-drug as well as a preparation method and application thereof. The targeting system consists of three components, namely ionizable cationic lipid SM-102, cholesterol and a serotonin derivative polymer (which is constructed by taking 1, 4-butanediol dimethacrylate and serotonin as monomers). The formed polymer hybrid liposome PLH shows excellent neuron targeting ability, and does not cause side effects such as neuroinflammation to affect the curative effect. Meanwhile, the vector can be used as an engineered vector to load circRNA of various coding therapeutic proteins for central nervous system disease treatment. The drug delivery system can realize cell specific nano medical treatment, and a promising bionic engineering strategy is established for precise brain disease treatment.

The present application relates to the technical field of lithium battery materials, and discloses an electrolyte precursor, a flame-retardant gel electrolyte and a preparation method and application thereof.The electrolyte precursor contains a phosphoric acid ester monomer containing a carbon-carbon double bond, an acrylic ester monomer containing a urea alkylidene bond, an acrylic ester monomer containing a cyano group and a phosphorus-containing crosslinking agent in a molar ratio of 1:1-2:1-3:1-2; the acrylic ester monomer containing a urea alkylidene bond is 2-urea alkylidene ethyl acrylate and / or diurea alkylidene dimethyl acrylate.The flame-retardant gel electrolyte obtained by the technical scheme has good flame-retardant effect, good thermal stability, can prevent the volatilization of flammable gas and the transmission of heat, and the prepared lithium ion battery has good flame-retardant performance, and the ionic conductivity of the lithium ion battery is obviously improved.

The present invention provides a composition containing polymer particles and inorganic powders that, when applied to concrete for waterproofing purposes, can produce a film with excellent tensile strength and elongation, capable of following cracks in concrete. [Solution] The composition according to the present invention contains 100 parts by mass of polymer particles (A) and 120 to 600 parts by mass of inorganic powder (B), wherein the polymer particles (A) contain a polymer having repeating units (Ma) derived from mono(meth)acrylic acid ester and repeating units (Mb) derived from di(meth)acrylic acid ester, the inorganic powder (B) has a mass passing through a 100-mesh sieve of less than 80% and a mass passing through a 50-mesh sieve of 30% or more, and the glass transition temperature (Tg) of the polymer constituting the polymer particles (A) is -50 to 5°C.

A sealant for an organic electroluminescent display element, which contains: (A) an alkylene glycol di(meth)acrylate having a carbon number of 4 or more and 20 or less, and (B) a photopolymerization initiator, the amount of a hydrophilic functional group with respect to the (meth)acrylate being in the range of 4.80 to 7.60 mmol / g.

Provided is a dental composite resin composition according to one embodiment of the present specification comprising 0.1-3 wt% polyalkylene glycol-based di(meth)acrylate, 0.1-3 wt% alkanediol di(meth)acrylate, 0.1-1 wt% glycerol di(meth)acrylate, and 60-90 wt% filler.

A thermosetting composition for injection molding comprising: (A) a di(meth)acrylate compound having structural units represented by the formulas (A1), and (B) a thermal polymerization initiator.

The invention relates to a curing agent based on isophorone diisocyanate oligomers, comprising 25 to 70 wt.% isophorone diisocyanate oligomers, optionally in the form of reaction products with at least one polyol, 25 to 75 wt.% dimethacrylates of formula (I), and 0 to 30 wt.% further substances. The curing agent is preferably used for curing polyurethane or polyurea coatings. It allows for light-stable coatings with low viscosity, rapid curing, high strength alongside high ductility and excellent weathering resistance.

This photocurable composition contains a photobase generator (a), a polyiso(thio)cyanate compound (b), a polythiol compound (c), and a di(meth)acrylate compound (d), wherein the photobase generator (a) contains at least one compound selected from the group consisting of compounds represented by formula (1) to formula (5). R1 to R11 are substituents, and n is an integer of 1 to 3.

The present invention relates to ocular compositions for the controlled release of a therapeutic agent. The ocular composition comprises at least 20% w / w of a therapeutic agent; 5 to 75% w / w of a photopolymerizable composition selected from the group consisting of fragments or monomers of polyalkylene glycol mono-acrylate, polyalkylene glycol diacrylate, polyalkylene glycol methacrylate and polyalkylene glycol dimethacrylate, and mixtures, copolymers, and block copolymers thereof; 0.1 to 40% w / w of a biodegradable polymer selected from the group consisting of lactide / glycolide copolymer (including poly(lactide-co-glycolide) (PLGA)), poly (L-lactide) (PLA), polyhydroxyalkanoates, including polyhydroxybutyrate, polyglycolic acid (PGA), polycaprolactone (PCL), poly (DL-lactide) (PDL), poly (D-lactide), lactide / caprolactone copolymer, poly-L-lactide-co-caprolactone (PLC) and mixtures, copolymers, and block copolymers thereof; and a photoinitiator.

This invention discloses an enzyme-catalyzed stabilized teeth whitening and bleaching composite composition and its preparation method, relating to the field of teeth whitening technology. The composition comprises three components: a whitening gel, a catalyst, and a light-cured gingival barrier resin, which synergistically achieve teeth whitening and bleaching. The whitening gel contains hydrogen peroxide, carbomer, propylene glycol, a stabilizer, water, and sodium hydroxide. The catalyst contains propylene glycol, catalase, carbomer, glycerol, sodium hydroxide, sodium benzoate, purified water, and fragrance. The resin contains polyether polyurethane methacrylate, 1,6-hexanediol dimethacrylate, triethylene glycol dimethacrylate, camphorquinone, ethyl p-dimethylaminobenzoate, tert-butylhydroquinone, fumed silica, pigment, fragrance, and MIG-type silica. This invention utilizes enzyme catalysis to achieve natural-looking whitening; the whitening gel is stable during storage and does not easily dilute or release water; the resin cures gently and has a flexible texture; and the process is controllable, making it suitable for industrial production and clinical teeth whitening treatment.

A curable resin composition which has high light sensitivity and good touch dryness and can obtain good flexibility, welding heat resistance and cross-sectional shapes, a dry film, a cured product and an electronic component. The curable resin composition comprises: (A) a carboxyl-containing resin having a bisphenol F backbone, (B) a photopolymerization initiator, (C) a photosensitive monomer, (D) an epoxy resin, and (E) an inorganic filler, wherein the photopolymerization initiator (B) comprises: (B1) an aminoacetophenone-based photopolymerization initiator, and (B2) a benzophenone-based photopolymerization initiator; and the photosensitive monomer (C) comprises: (C1) a di(meth)acrylate having a polypropylene glycol backbone.