143 results about "Acetic acid ethenyl ester" patented technology

The invention discloses preparation and application methods of a thermoplastic adhesive for powder microinjection molding, and belongs to the technical field of powder microinjection. The preparation and application methods are characterized in that the adhesive is composed of a plurality of components, a mixing process with metal and ceramic powder is simple, an injection temperature window is wide, flowability of feedstock is good, green body strength during demoulding and degreasing, no injection and degreasing defects exist, and a residual quantity after degreasing is small. The adhesive contains, by mass, 5-40% of paraffin wax (PW), 5-20% of beewax (BW), 10-32% of high density polyethylene (HDPE), 10-40% of ethylene-vinyl acetate (EVA) and 5-25% of stearic acid (SA). According to the methods, the forming precision of minisize parts produced through the powder microinjection molding technology is improved remarkably, and production and application ranges of metal and ceramic minisize parts are broadened.

A resin composition comprising: a polyolefin (A); a saponified ethylene-vinyl acetate copolymer (B) having an ethylene content of 20 to 65 mol % and having a degree of saponification of vinyl acetate units of 96% or more; a higher fatty acid metal salt (C) having 8 to 22 carbon atoms; and a conjugated polyene compound (D) having a boiling point of 20° C. or higher; wherein the mass ratio (A:B) of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B) is 60:40 to 99.9:0.1, the amount of the higher fatty acid metal salts (C) is in the range of 0.0001 to 10 parts by mass per 100 parts by mass of the total of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B), and the amount of conjugated polyene compound (D) is in the range of 0.000001 to 1 part by mass per 100 parts by mass of the total of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B). This enables suppression of formation of aggregations at a micro-scale level, which serves to improve the dispersibility of EVOH. As a result, the occurrence of poor appearance such as wavy patterns on the molded article surface caused by flow anomalies due to the aggregates is suppressed, and thus, it is possible to obtain molded articles with good appearance.

A method of preparing a synthetic fuel from coal comprising applying to the coal an aqueous emulsion of one or more reactive polymers and thoroughly mixing the coal to yield a complete reaction of the coal with the reactive polymers, wherein the reactive polymers are selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/vinyl alcohol copolymers, poly(acrylic acid), poly(vinyl alcohol), vinyl alcohol/vinyl acetate copolymers, poly(vinyl acetate), vinyl acetate/acrylic acid copolymers, poly(vinyl acetate/acrylic acid/ethylene), acrylic acid/acrylamide copolymers and poly(acrylamide).

The invention provides a ceramic binding agent, which belongs to the technical field of adhesives and comprises, by mass, acetic acid ethenyl ester 10%-15%, sodium silicate 5%-7.5%, aluminum powder 2%-3%, sodium aluminate 5%-10%, methyl vinylsiloxane rubber 15%-20%, phenolic resin 10%-15%, ethyl acetate 10%-15% and the balance water. The ceramic binding agent is high in temperature-resisting performance and balanced in texture and strength after being bonded. In addition, the ceramic binding agent can be bonded between ceramics, can be used for bonding various materials including woods, metal, plastics and the like, and is wide in application range and convenient to use.

A production process for a catalyst that supports a noble metal, and an alkali metal compound and/or alkali earth metal compound, useful for synthesis of vinyl acetate is provided. The process includes (a) impregnating a carrier with an aqueous solution of a water soluble noble metal compound, and (b) converting the noble metal compound into a water insoluble noble metal compound, and the noble metal compound is reduced, followed by supporting an alkali metal compound and/or alkali earth metal compound. An element that oxidizes to produce an amphoteric oxide is brought into contact with the carrier at the step (a) and/or the step (b). This process is advantageous in facilities required and the associated running costs for production of an eggshell-type structure catalyst, which offers a high level of catalytic activity, and enables the production of vinyl acetate with a high space-time yield.

A slow-release microball of the anticancer medicine containing hormone component for preparing the slow-release implant or slow-release injection is composed of the active anticancer component chosen from hormone-type anticancer medicine and its synergist and antimetabolic anticancer medicine, and the medicinal additive chosen from polylactic acid, the copolymer of polyoxyacetic acid and hydroxyacetic acid, ethene-vinyl acetate copolymer and polifeprosan.

The invention discloses a sound-proof material, a preparation method and an application of the sound-proof material. The sound-proof material is prepared from the following raw materials: graphene, polyethene, chloroprene rubber, polyoxypropylene triol, caprylic/capric triglyceride, a methacrylate polymer, brominated paraffin, a quartz glass fiber, maleic anhydride, an ethylene-ethyl acrylate copolymer, acetic acid ethenyl ester copolymer emulsion, trisopropanolamine, an adhesive, a dispersing agent, a tackifier, a cross-linking agent, a catalyst, a plasticizer, a flexibilizer, a foaming agent, a foaming regulator, a foam stabilizer, a curing agent, a degradation agent and a stabilizer. The sound-proof material is prepared by the steps of mixing, extruding and the like. The sound-proof material is applied to 3D (three dimensional) printing. The material is degradable, can be degraded completely after 267-283 days, and a sound reduction index is 25.36-29.51 dB which shows that the material has a good sound-proof effect.

The invention relates to a floor covering adhesive composition, based on an aqueous, emulsifier-stabilized polymer dispersion of vinyl acetate-ethylene copolymer, containing A) tackifying resin, B) one or more fillers, and C) a vinyl acetate-ethylene copolymer in the form of an emulsifier-stabilized aqueous dispersion, characterized in that the vinyl acetate-ethylene copolymer is obtained by radical-initiated emulsion polymerization in an aqueous medium, of a) 60 to 89.9% by weight of vinyl acetate, b) 10 to 36% by weight of ethylene, c) 0 to 2% by weight of one or more monomers selected from the group of vinyl esters of carboxylic acids having 8 to 12 C atoms and acrylic acid alkyl esters having a C to C8 alkyl radical, d) 0.1 to 5% by weight of one or more ethylenically unsaturated auxiliary monomers having a carboxylic acid group, amide group, nitrile group or sulfonic acid (salt) group, wherein the percentages stated in % by weight are each in relation to the total weight of the comonomers and add up to 100% by weight, and the polymerization is carried out in the presence of one or more emulsifiers.

The invention provides improved environment-friendly type spinning slurry. The improved environment-friendly type spinning slurry is prepared from the following raw materials in parts by weight: 20-36 parts of protein slurry, 6-9 parts of glycerin, 5-7 parts of protein amino acid, 10-15 parts of cassava starch, 4-5 parts of sodium dodecyl benzene sulfonate, 2-3 parts of coptis chinensis, 4-8 parts of soya fatty acid ethoxylate, 5-10 parts of dodecyl dimethyl tertiary amine, 12-24 parts of acrylic acid, 2-4 parts of vinyl acetate, 5-7 parts of borax, 2-5 parts of diphenylmethane and 12-25 parts of cross-linked starch. The improved environment-friendly type spinning slurry provided by the invention has the beneficial effects that the bonding force between fibers is increased, the tensile strength of yarns is improved, the web breaking is effectively reduced, the efficiency is improved and the cost is reduced; the improved environment-friendly type spinning slurry is green and environmentally friendly.