23 results about "Vinyl Amide" patented technology

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and compounds of Formula 2 are present in the formulation in specific ratios relative to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desired silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and compounds of Formula 2 are present in the formulation in specific ratios to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desirable silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

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.

The present invention provides a silicone hydrogel contact lens formulation, comprising a polymerizable siloxane component, a hydrophilic N-vinyl amide monomer, triphenylphosphine (TPP) and one or more of anthraquinone blue tinting agent, a benzophenone UV-absorbing agent or a benzotriazole HEVL absorber; a silicone hydrogel contact lens formed from the polymerisation of the silicone hydrogel contact lens formulation; and the use of an anthraquinone blue tinting agent, a benzophenone UV-absorbing agent and / or a benzotriazole HEVL absorber to stabilise a formulation comprising a polymerizable siloxane component, a hydrophilic N-vinyl amide monomer and TPP.

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and compounds of Formula 2 are present in the formulation in specific ratios relative to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desired silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

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.

The invention provides a silicone hydrogel contact lens formulation comprising a difunctional siloxane, a hydrophilic N-vinyl amide monomer, and at least 0.10% (wt / wt) triphenylphosphine (TPP); a silicone hydrogel contact lens formed by polymerizing the silicone hydrogel contact lens formulation, and the use of TPP to improve the surface properties of a contact lens prepared from a formulation comprising a difunctional siloxane and a hydrophilic N-vinyl amide monomer.

The invention belongs to the field of macromolecules, and relates to an aerogel compound fertilizer, a biodegradable film and a preparation method and application thereof. The aerogel compound fertilizer comprises a bio-based high-molecular material carrier and a fertilizer loaded on the bio-based high-molecular material carrier, and is prepared by reacting a bio-based high-molecular material, an auxiliary agent and a water-soluble fertilizer, the bio-based high polymer material is a plant hormone; the auxiliary agent is a long-chain aliphatic compound and an N-vinyl amide polymer; based on 100 parts by weight of the aerogel compound fertilizer, the use amount of the bio-based high polymer material is 20-60 parts by weight, the use amount of the long-chain aliphatic compound is 1-10 parts by weight, the use amount of the N-vinyl amide polymer is 1-10 parts by weight, and the use amount of the water-soluble fertilizer is 10-80 parts by weight. The film prepared from the biodegradable composition disclosed by the invention has the characteristics of good mechanical property, good weather resistance, good fertilizer slow release performance, biodegradability and the like.

The present application relates to a silicone hydrogel prepared by polymerization of a polymerizable composition. The polymerizable composition comprises the following components: (a) a monofunctional siloxane monomer; (b) a hydrophilic N-vinyl amide monomer; (c) a hydrophobic vinyl monomer; (d) a hydrophilic vinyl monomer containing a hydroxyl group; (e) a non-silicone type vinyl crosslinker; and (f) a free radical initiator. The hydrophobic vinyl monomer has a refractive index greater than 1.41, and the hydrophobic vinyl monomer has a glass transition temperature greater than or equal to 60°C. The present application also relates to a contact lens prepared from the above silicone hydrogel and a method for preparing the same. The contact lens described herein has a release rate of up to 100%, and a dry sheet modulus preferably greater than 100 MPa.

The present invention provides a silicone hydrogel contact lens formulation comprising a polymerizable siloxane component, a hydrophilic N-vinylamide monomer, triphenylphosphine (TPP), and one or more of an anthraquinone blue tint, a benzophenone UV absorber, or a benzotriazole HEVL absorber; a silicone hydrogel contact lens formed from the polymerization of the silicone hydrogel contact lens formulation; and the use of an anthraquinone blue tint, a benzophenone UV absorber, and / or a benzotriazole HEVL absorber to stabilize a formulation comprising a polymerizable siloxane component, a hydrophilic N-vinylamide monomer, and TPP.

The present invention generally relates to the field of cross-linkable aqueous vinyl polymer dispersions, to a coating composition comprising said cross-linkable aqueous vinyl polymer dispersions; to a paint formulation comprising said cross-linkable aqueous vinyl polymer dispersions; and to an article coated with the coating composition or the paint formulation. In particular, the present invention provides an aqueous vinyl polymer dispersion PD which comprises the following polymers: —1) an aqueous dispersion of a vinyl polymer P1 obtainable by free radical emulsion polymerization of a monomers mixture comprising: a) 5 to 20 wt % acid functional ethylenically unsaturated monomers M1 or precursors thereof; b) 5 to 25 wt % ethylenically unsaturated monomers M2 containing a polyethylene glycol or monoalkoxy polyethylene glycol moiety; c) up to 90 wt % of non-ionic ethylenically unsaturated monomers M3 other than M1 or M2; d) 0 to 10 wt % ethylenically unsaturated monomers M4 with a functional group for cross-linking after film-formation; e) 0 to 10 wt % of at least one chain transfer agent CTA; where the sum of the wt. % of M1+M2+M3+M4+CTA=100 wt %; —2) an aqueous dispersion or solution of a vinyl polymer P2 obtainable by free radical copolymerization of: a) from 25 to 95 wt % of a ethylenically unsaturated monomers M5 selected from the group of N-vinyl amides with general structure (I) where R1 and R2 are alkyl from C1 to C5 and may be connected to form a ring-structure, preferably N-vinyl pyrrolidone or N-vinyl caprolactam; b) from 5 to 75 wt % of non-ionic ethylenically unsaturated monomers M3′ other than M5; c) from 0 to 5 wt % of ethylenically unsaturated monomers M4′ with a functional group for cross-linking after film-formation; d) from 0 to 10 wt % acid functional ethylenically unsaturated monomers M1′ or precursors thereof; e) from 0 to 5 wt % of at least one chain transfer agent CTA′; where the sum of the wt. % of: M5+M3′+M4′+M1′+CTA′=100 wt %; —3) a film-forming vinyl polymer P3 under the form of an aqueous dispersion comprising: i) from 20 to 60 wt % of a water-soluble or water dispersible crosslinkable vinyl oligomer OL obtained by emulsion polymerizing a monomer mixture comprising: 1) at least one acid functional ethylenically unsaturated monomer M1″; 2) at least one ethylenically unsaturated monomer M4″ with functionality for crosslinking upon film-formation, other than M1″; 3) at least one ethylenically unsaturated monomer M3″ other than M1″ and M2″, and 5) optionally, at least one chain transfer agent CTA″, and ii) from 40 to 80 wt % of a high molecular weight vinyl polymer P4 prepared by emulsion polymerizing, in the presence of the water-soluble or water-dispersible crosslinkable vinyl oligomer OL, a monomer mixture comprising: 1) optionally one acid functional ethylenically unsaturated monomer M1′″; 2) optionally one or more ethylenically unsaturated monomers M4″′ with functionality for crosslinking upon film-formation, other than M1′″; 3) at least one ethylenically unsaturated monomer M3′″ other than M1′″ and MT′ and 4) optionally, one or more multifunctional ethylenically unsaturated monomers for pre-crosslinking, M5′″, preferably in an amount less than 5 wt %, —Where the total weight of film-forming vinyl polymer P3=wt. % of the water-soluble or water dispersible crosslinkable vinyl oligomer OL+wt. % of the high molecular weight vinyl polymer P4=i)+ii)=100 wt % and—Where the total weight of the vinyl polymer in the aqueous vinyl polymer dispersion PD=wt. % of the vinyl polymer P1+wt. % of the vinyl polymer P2+wt. % of the film-forming vinyl polymer P3=100 wt %.

This invention discloses a method for preparing cyclohexadienone compounds. The method uses a vinylamide derivative as a starting material and phenyldimethylsilane as a hydrogen source. Through the combined action of an oxidant and a cobalt salt, the reaction occurs in an organic solvent at a temperature of 10-110°C to generate the corresponding cyclohexadienone compound. This invention uses readily available vinylamide derivatives as starting materials and achieves rapid construction of cyclohexadienone compounds in one step by constructing a ring and two chemical bonds. The reaction conditions are mild, the operation is simple, and it has advantages such as readily available reactants, broad substrate applicability, and easy separation of the target product.

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and Formula 2 are present in the formulation in specific ratios to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desired silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

The application provides a water-based well drilling fluid cementing wall stabilizer and a preparation method and application thereof, and comprises the following steps: (1) mixing a first material system comprising a vinylamide, a vinylpyrrolidone, a tannic acid, a carbon fiber and an initiator with a first solvent to obtain a core material; (2) mixing a second material system comprising an emulsifier, a flexible polymer and a curing agent with a second solvent to obtain a shell material; (3) mixing the core material with part of the shell material, and then performing shearing homogenization to obtain a water-in-oil emulsion; and (4) mixing the water-in-oil emulsion with the remaining shell material, and then performing a polycondensation reaction to obtain the cementing wall stabilizer. The cementing wall stabilizer provided by the application is suitable for a water-based well drilling fluid system and has good dispersion stability and high-temperature and high-pressure structural stability.

The invention discloses a glassy indium yttrium oxide modified ternary layered oxide positive electrode material and a preparation method thereof. The preparation method comprises the following steps: (1) mixing and grinding an N-vinyl amide polymer, indium acetate, yttrium acetate and a ternary layered oxide positive electrode material to form uniform mixed powder; (2) mixing the mixed powder with ultrapure water to form turbid liquid, and then performing ultrasonic dispersion; (3) heating and evaporating the sample subjected to ultrasonic dispersion; (4) sintering the sample dried by distillation, and naturally cooling to room temperature after sintering to obtain a sintered product; and (5) grinding, washing and drying the sintered product, and then grinding and sieving again to obtain a final product. The inner core structure of the obtained positive electrode material is a ternary layered oxide positive electrode material, and the outer layer is a glassy indium yttrium oxide coating layer obtained by in-situ derivation. According to the method, the problems of capacity stability and voltage attenuation in the cyclic process of the ternary layered oxide positive electrode material are solved, the rate capability of the material is improved, and the method is suitable for large-scale production.

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.

A radiation-curable composition comprising: a) 30-70% by weight of a radiation-polymerizable monomer (A) containing an N-vinylamide moiety; and b) 30-70% by weight of a number-average molecular weight (M) of 60,000 g / mol or less. n A radiation-curable composition comprising a thermoplastic polyurethane (B) having ) obtained from a polyol selected from the group consisting of polyester polyols, polyether polyols, polycaprolactone polyols, polycarbonate polyols and any combination thereof, and a radiation-sensitive polymerization initiator (C), wherein the weight % is based on 100% by weight of the radiation-polymerizable monomer (A) and the thermoplastic polyurethane (B).

This disclosure provides resin formulations which may be used for 3D printing and thermally treating to produce a ceramic material. The disclosure provides direct, free-form 3D printing of a preceramic polymer, followed by converting the preceramic polymer to a 3D-printed ceramic composite with potentially complex 3D shapes. A wide variety of chemical compositions is disclosed, and several experimental examples are included to demonstrate reduction to practice. For example, preceramic resin formulations may contain a carbosilane in which there is at least one functional group selected from vinyl, allyl, ethynyl, unsubstituted or substituted alkyl, ester group, amine, hydroxyl, vinyl ether, vinyl ester, glycidyl, glycidyl ether, vinyl glycidyl ether, vinyl amide, vinyl triazine, vinyl isocyanurate, acrylate, methacrylate, alkyl acrylate, alkyl methacrylate, phenyl, halide, thiol, cyano, cyanate, or thiocyanate. The resin formulations may contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material.

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.

The application belongs to the field of liquid flow batteries, and particularly relates to an electrolyte, a preparation method thereof and a full vanadium liquid flow battery. The electrolyte comprises vanadium ions, bismuth ions, an N-vinyl amide polymer and an acid; a monomer of the N-vinyl amide polymer contains an amide bond and a carbon-carbon double bond connected to an N atom of the amide bond. By introducing the N-vinyl amide polymer, the catalytic activity of a catalyst is ensured, the stability of the electrolyte is improved, and the efficiency, stability and cycle performance of the full vanadium liquid flow battery are improved.

The application discloses a glassy indium yttrium oxide modified ternary layered oxide positive electrode material and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly mixing and grinding N-vinylamide polymer, indium acetate, yttrium acetate and a ternary layered oxide positive electrode material to form a uniform mixed powder; (2) mixing the mixed powder with ultrapure water to form a suspension, and then performing ultrasonic dispersion; (3) heating and evaporating the sample after ultrasonic dispersion; (4) sintering the sample after evaporation, and naturally cooling the sintered product to room temperature; (5) grinding, washing and drying the sintered product, and then grinding and sieving the sintered product again to obtain a final product. The inner core structure of the obtained positive electrode material is a ternary layered oxide positive electrode material, and the outer layer is a glassy indium yttrium oxide coating layer derived in situ. The method improves the capacity stability and voltage attenuation problems of the ternary layered oxide positive electrode material in the cycle process, improves the rate performance of the material, and is suitable for large-scale production.

The invention discloses an NRGO / CNTs modified epoxy resin composite material as well as a preparation method and application thereof, and relates to the technical field of wave-absorbing materials. The preparation method comprises the following steps: mixing graphene oxide and urea, dispersing in water, and carrying out hydrothermal reaction to obtain an NRGO nano material; adding the NRGO nano material, a carbon nano tube and an N-vinyl amide dispersing agent into water, and stirring and reacting at 70-90 DEG C for 3-6 hours to obtain an NRGO / CNTs nano material; and adding epoxy resin and a curing agent into the NRGO / CNTs nano material, heating and uniformly stirring to obtain the NRGO / CNTs modified epoxy resin composite material. The cocoon-shaped CNT cluster bridging N-RGO structure is applied to epoxy resin, the electromagnetic wave absorption performance of the material is remarkably improved, meanwhile, the mechanical performance and heat conductivity of the material are improved, and the toughness of the epoxy resin material is improved.

This invention relates to the field of polymer materials, and discloses a foaming composition and its application, a foaming material and its preparation method and application. The composition comprises 5-50 parts by weight of POE, 50-95 parts by weight of EVA, and 0.1-1 parts by weight of a composite weathering agent; wherein the composite weathering agent comprises maleic anhydride copolymer microspheres, an antioxidant, a UV absorber, a UV shielding agent, a light stabilizer, and an N-vinylamide polymer. The specific composite weathering agent in this composition can simultaneously act as an interface compatibilizer and a cell nucleating agent, significantly reducing the volatilization of VOCs and other gases while ensuring uniform cell structure in the foamed material, and significantly improving the mechanical properties and weather resistance of the foamed material.