2619 results about "Acrylate copolymer" patented technology

A stable, aqueous composition containing a substantially crosslinked alkali-swellable acrylate copolymer rheology modifier, a surfactant, an alkaline material, and various compounds therein, as for example substantially insoluble materials requiring suspension or stabilization, such as a silicone, an oily material, or a pearlescent material. Additionally, this invention also relates to the formation of a rheologically and phase stable cationic hair dye composition. The invention further relates to the incorporation of an acidic material after the addition of an alkaline material to reduce the pH of the composition without negatively impacting the viscosity of the composition.

Curable pressure sensitive adhesive compositions comprising an acrylate copolymer, a mono-acrylate oligomer, a multi-acrylate oligomer having from 2 to 5 acrylate functional groups per molecule, and a photoinitiator, the adhesive exhibiting pressure sensitive adhesive characteristics and forms at least a semi-interpenetrating polymer network when cured; wherein the semi-IPN has an average molecular weight between crosslinks (M_c) greater than about 3000, and the cured adhesive has a peel strength greater than about 40 N/dm. Embodiments of the adhesive compositions, when cured, are optically clear and resistant to heat and moisture.

This invention provides an electrically conductive ink comprising an electrically conductive material and a vinyl chloride/vinyl acetate/hydroxyalkyl (meth)acrylate copolymer resin. There is also provided a noncontact-type medium comprising a base material and, provided on the base material, an electrically conductive circuit formed using the electrically conductive ink, and an IC chip mounted in the state of being electrically conducted to the electrically conductive circuit. An electrically conductive circuit, which is in a thin film form, can be used as an antenna circuit for noncontact-type media, has a low volume resistivity on the order of 10⁻⁵ Ω·cm, and is highly reliable under a high temperature and high humidity environment, can be formed by using the electrically conductive ink at a low temperature in a short time.

The invention relates to a process for producing mouldings by injection moulding, the steps in the process being A) Melting a mixture made from a) a (meth)acrylate copolymer composed of from 40 to 100% by weight of free-radical-polymerized C1-C4-alkyl esters of acrylic or methacrylic acid and from 0 to 60% by weight of (meth)acrylate monomers having an anionic group in the alkyl radical, where the copolymer comprises b) from 0.1 to 3% by weight of a release agent, and, where appropriate, the mixture may comprise c) from 0 to 50% by weight of a drier, d) from 0 to 30% by weight of a plasticizer, e) from 0 to 100% by weight of additives or auxiliaries, f) from 0 to 100% by weight of an active pharmaceutical ingredient, g) from 0 to 20% by weight of another polymer or copolymer, where the amounts given for components b) to g) are based on the (meth)acrylate copolymer a) and the mixture prior to melting has a content of more than 0.5% by weight of low-boiling constituents with vapour pressure of at least 1.9 bar at 120° C., B) Devolatilizing the mixture in the thermoplastic state at temperatures of at least 120° C., thereby lowering to not more than 0.5% by weight the content of the low-boiling constituents with vapour pressure of at least 1.9 bar at 120° C., C) Injecting the molten and devolatilized mixture into the mould cavity of an injection mould, the temperature of the mould cavity being below the glass transition temperature of the (meth)acrylate copolymer by at least 10° C., cooling the molten mixture, and removing the resultant moulding from the mould.

Through the combination of at least two polymer families, and the optimization of other components, a rubber compound has been developed for use in downhole applications that will swell in water-based fluids. A cellulose component, such as carboxy methyl cellulose (CMC), is used together with an acrylate copolymer (AC) that can increase the swelling capacity of an acrylonitrile butadiene rubber (NBR) in water to over 1000%. The amount of swelling achieved depends on physical boundaries and limitations, the salinity of the water, and the temperature.

A biaxially oriented laminate film including a first amorphous polylactic acid polymer heat sealable resin layer and a second core layer including a blend of crystalline polylactic acid polymer and 2-10 wt % of the core layer of an ethylene-acrylate copolymer. The laminate film, exhibiting the property to be transverse oriented in excess of 6 times its original width, typically 8 to 10 times its original width with excellent operability and relatively low haze, is disclosed. The laminate film may further have additional layers such as a third polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.

An implantable prosthetic bearing is constructed of a composite material having a first layer and second layer. The first layer has an articulating surface defined therein, whereas the second layer has a engaging surface defined therein for engaging either another prosthetic component or the bone itself. The first layer of the implantable prosthetic bearing is constructed of a polymer such as polyethylene or UHMWPE, whereas the second layer is constructed of a copolymer of ethylene and an acrylate. The ethylene portion of the copolymer provides for adhesion to the polymer of the first layer, whereas the acrylate portion of the copolymer provides for adhesion to commonly utilized bone cements. A method of making a prosthetic bearing is also disclosed.

The present patent application relates to an agent for the coloring of keratin fibers based on oxidative dye precursors and/or direct-penetrating dyes, that contains a combination of at least one cationic hydroxyethyl cellulose and at least one acrylate copolymer in a suitable cosmetic carrier as well as a multicomponent-kit for the coloring of keratin fibers.

A polymer composition for use in the removal and recovery of oil slicks or spills floating on the surfaces of bodies of water or present on land, such as beaches comprising a foam of a blend of polyethylene and an ethylene-alkyl acrylate copolymer and a process for using such foams in the selective removal of oil from fresh water or salt water and the recovery of the absorbed oils from the foams is disclosed. The polymer composition is also for use in other applications in which absorption of liquids is desired.

The invention relates to a moulding composition, comprising a) 50 to 99.9% by weight of a matrix composed of a thermoplastic polymer and b) from 0.1 to 50% by weight of a matting agent in the form of a (meth)acrylate copolymer dispersed in the matrix, characterized in that the matting agent is a (meth)acrylate copolymer which has been prepared from the following monomers, b1) from 50 to 95% by weight of methyl methacrylate

• • b2) from 5 to 50% by weight of C₁-C₆-alkyl acrylates b3) from 0.01 to less than 0.5% by weight of a crosslinking monomer and/or graft-linking agent having two or more ethylenically unsaturated radicals capable of free-radical polymerization, b4) from 0 to 20% by weight of one or more other, non-crosslinking ethylenically unsaturated monomers capable of free-radical polymerization,

where the entirety of the constituents b1) and b2) and, where appropriate, b3) and/or b4) gives 100% by weight, and the glass transition temperature T_mg of the matting agent is at least 20° C.

A (meth)acrylate copolymer obtained by copolymerization of a monomer mixture containing a monomer (A) of the general formula (I),

The present invention generally relates to a barrier coating composition for application to a thermoplastic film comprising (a) a nano-clay additive in an amount from about 1 wt % to 50 wt % of said barrier coating, wherein said nano-clay additive comprises untreated nano-clay platelets; and (b) a base coating in an amount from about 50 wt % to 99 wt % of said barrier coating, wherein said base coating comprises a polymer selected from the group consisting of polyvinylidene chloride (PVdC), poly(vinyl)alcohol (PVOH), ethylene vinyl alcohol (EVOH), acrylate copolymers and mixtures thereof.

A water plastic-film intaglio printing ink consists of alkali soluble acrylic copolymer, low-Tg value acrylate copolymer emulsion, high-Tg value acrylate copolymer emulsion, silicon modified acrylate copolymer emulsion as grinding dispersing medium and filming medium. Adhesion modifier, interface modifier and other various accessories are added into ink and the ink can be produced proportionally for red ink, yellow ink, blue ink, black ink and other-color inks. It has bright color, better saturation degree, alkali-resistance and dispersion.

A photoprotective composition includes one or more photoactive agents (such as a UV filter compound), one or more optimizing agents, and a copolymer booster. Such a composition provides an unexpected synergistic combination of the one or more optimizing agents and the copolymer booster for increasing at least one of SPF, UVA/UVB ratio, critical wavelength, photostability of UVA absorber and PFA, and any combinations thereof, of the composition.

The invention belongs to the field of coatings, and particularly relates to a polyurethane/polyacrylate copolymer modified by organic fluoride and an ultraviolet curing coating prepared by the polyurethane/polyacrylate copolymer. A method for preparing the polyurethane/polyacrylate copolymer modified by organic fluoride comprises the following steps: 1), preparing a polyurethane prepolymer modified by organic fluoride; 2), preparing a (methyl) acrylate prepolymer; and 3), preparing the polyurethane/polyacrylate copolymer modified by organic fluoride. A method for preparing an ultraviolet curing agent by taking the polyurethane/polyacrylate copolymer modified by organic fluoride as a raw material comprises the steps that taking 100-107 parts of polyurethane/polyacrylate, 50-68 parts of an reactive diluent, 13-18 parts of a photoinitiator and 8-16 parts of an auxiliary; stirring fully for 5-15 minutes until all the materials are mixed uniformly; and obtaining the polyurethane/polyacrylate copolymer modified by organic fluoride and the ultraviolet curing coating prepared by the polyurethane/polyacrylate copolymer.

The present invention relates to a novel hydrocolloid adhesive mass useful for medical purposes, characterized in that said hydrocolloid adhesive mass comprises:a) 0.2 to 5 parts by weight of an ethoxylated sorbitan fatty acid ester;b) 20 to 50 parts by weight of a hydrocolloid;c) 32 to 120 to parts by weight of an adhesive matrix made up of one or more polymers selected from poly(styrene/olefin/styrene) block copolymers, low-molecular polyisobutylenes and high-molecular polyisobutylenes, and one or more compounds selected from sticky resins, or tackifying resins, plasticizers, polybutenes, antioxidants, ethylene/vinyl acetate copolymers, butyl rubbers and ethylene/propylene block copolymers; andd) 0 to 15 parts by weight of an acrylate copolymer with a glass transition temperature below -20° C. It further relates to the use of this hydrocolloid adhesive mass for the production of dressings, especially for the treatment of superficial, deep, chronic or acute dermo-epidermal lesions, exudative wounds and bums.

Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.

The invention discloses an aluminum alloy wheel hub coating technology. The aluminum alloy wheel hub coating technology comprises the procedures of oil removing, cleaning and drying, pre-treating, epoxy polyester powder spraying and solidifying, grinding I, methyl methacrylate-acrylate copolymer paint spraying and solidifying, grinding II, polybutadiene high temperature resistant insulating coating spraying and solidifying, vacuum cathode arc ion chromium plating and magnetism control sputtering aluminum plating, and polyurethane methacrylate light solidifying paint spraying and solidifying in sequence. The aluminum alloy wheel hub coating technology adopts dry electric plating to replace the traditional wet electric plating, the plating layer surface quality and the physical and chemical properties are approximately equivalent to the wet electric plated aluminum alloy wheel hub, the chromium consumption is reduced to about one fifth of the wet electric plating, the water consumption is reduced to about one seventh of the wet electric plating, precious nickel and copper are not utilized, the poisonous metal substance such as hexavalent chromium is not contained, the pollution to the environment is reduced, the energy, water and precious metal consumption is remarkably reduced, the technological flow is simplified, the production efficiency is enhanced, the heavy polishing working sequence is omitted, the working condition is remarkably improved, and the cost is reduced.

Disclosed herein is a branched (meth)acrylate copolymer prepared by polymerizing a monomer mixture comprising (A) about 20 to about 99.999% by weight of a (meth)acrylate monomer having a refractive index higher than methyl methacrylate; (B) about 0 to about 79.999% by weight of a mono-functional unsaturated monomer; and (C) about 0.001 to about 10% by weight of a crosslinking monomer. The copolymer has a refractive index of about 1.495 to about 1.590.

Acrylate copolymer pressure-sensitive adhesive constructions are described which provide excellent retention of rivet properties. Tenting around rivets is minimized even after undergoing thermal aging while in contact with additive rich films like PVC. This is achieved by the inclusion of a synergistic amount of an N-vinyl lactam monomer and acid monomer with the bulk of the monomers being an alkyl acrylate save and/or methacrylate esters. A concomitant increase in cohesive strength is also achieved which affords good removal characteristics. The use of appropriate adhesive blends is further disclosed which allows retention of these features while also improving cold temperature properties.

The invention discloses a mildewproof preservative film and a preparation method thereof. The mildewproof preservative film comprises a base layer and a mildewproof preservative coating arranged on the base layer, wherein the mildewproof preservative coating is prepared from a mildewproof preservative paint. The mildewproof preservative paint comprises the following components in percentage by weight: 20-60% of resin, 30-70% of solvent, 0.5-10% of mildew preventive and 0.3-5% of aid. The resin is composed of at least one of polyurethane, an acrylate copolymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinylidene chloride, an ethylene-vinyl acetate copolymer, a polyvinyl acetate copolymer and a vinyl acetate-butyl ester copolymer; and the solvent is composed of at least one of water and ethanol. The mildewproof preservative coating of the mildewproof preservative film has the advantages of compact surface and no void; and by adding the mildew preventive, the mildewproof preservative coating has the favorable effects of keeping the moisture constant and preventing mildewing. The mildewproof preservative film is especially suitable for preserving fruits, bread, tobacco and other foods which have shorter storage period, can easily mildew in a short time and need to be eaten in time.