Abstract: The present invention is related to the use of formulations of new random copolymers and terpolymers, synthesized by a method of semi continuous emulsion polymerization, and that function as flow improvers, lowering the pour point and reducing the viscosity of Mexicans crude oils, which have gravities within the range of 9 to 30° API.

Abstract: An EVA sheet for a photovoltaic module comprising microparticles, the main component of which is an ethylene-vinyl acetate resin is provided. A method for manufacturing an EVA sheet for a photovoltaic module comprising the steps of: (a) preparing microparticles, the main component of which is an ethylene-vinyl acetate resin; (b) dispersing the microparticles; and (c) sintering the dispersed microparticles is provided.

Abstract: The present invention refers to a multilayer heat shrinkable film characterized by a combination of desirable properties, such as high shrinkage, good optical properties, excellent sealability and puncture resistance. The invention further is directed to a method of producing said film. The invention is further directed to the use of said film or bags and pouches made therefrom for packaging goods as for example food products.

Abstract: A method for producing a resin composition, comprising the step of: subjecting a radical copolymerization of a first radical polymerizable monomer which is free from any crystalline molecular chain and a second radical polymerizable monomer having a crystalline molecular chain, in the presence of a radical polymerization initiator, wherein the second radical polymerizable monomer is the following compound, (wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes an alkyl group having at least 17 carbon atoms) the first radical polymerizable monomer has a particular reactivity ratio.

Abstract: The invention provides an ethylene-based polymer comprising the following properties: a) a melt index (12)>2.0 dg/min; b) a Mw(abs) versus 12 relationship: Mw(abs)<A+B(I2), where A=2.40×105 g/mole, and B=?8.00×103 (g/mole)/(dg/min); and c) a G? versus 12 relationship: G?>C+D(I2), where C=127.5 Pa, and D=?1.25 Pa/(dg/min). The invention also provides an ethylene-based polymer comprising the following properties: a) a melt index (12)>2.0 dg/min; b) a G? versus 12 relationship: G?>C+D(I2), where C=127.5 Pa, and D=?1.25 Pa/(dg/min) c) a chloroform extractable (Clext) versus G? relationship: Clext.<E+FG?, where E=0.20 wt %, and F=0.060 wt %/Pa; and d) a “weight fraction (w) of molecular weight greater than 106 g/mole, based on the total weight of polymer, and as determined by GPC(abs),” that meets the following relationship: w<I?J(I2), where I=0.080, and J=?4.00×10?3 min/dg.

Abstract: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that the second reactor zone contains a CTA system having a transfer activity Z2; and with the proviso that the ratio of Z1/Z2 is less than 1.

Abstract: Ethanol is produced from methyl acetate by a hydrogenolysis reaction. The methyl acetate is produced as a byproduct during the conversion of a vinyl acetate polymer or copolymer to a polymer or copolymer of vinyl alcohol. By integrating the two processes, a valuable product, i.e. ethanol, is produced from a methyl acetate byproduct.

Abstract: Acetic acid is converted to vinyl acetate monomer by a reaction with oxygen and ethylene. The vinyl acetate is polymerized to form a vinyl acetate polymer or copolymer, which is then reacted in a methanolysis reaction with methanol and base to form a polymer or copolymer of vinyl alcohol and a methyl acetate byproduct. Ethanol is produced from methyl acetate by a hydrogenolysis reaction. The hydrogenolysis reaction also produces methanol. At least a portion of this ethanol is converted to ethylene by a dehydration reaction. At least a portion of the ethylene produced in this dehydration reaction is recycled to react with acetic acid and oxygen to form vinyl acetate. By converting a byproduct and by recycle of compositions, a polymer or copolymer of vinyl alcohol is efficiently produced with minimal waste.

Abstract: An apparatus for forming particles from a liquid, including a rotor assembly having at least one surface sized and shaped so as to define at least one capillary. Each capillary has an inner region adjacent an axis of rotation of the rotor assembly, an outer region distal from the axis of rotation, and an edge adjacent the outer region. The rotor assembly is configured to be rotated at an angular velocity selected such that when the liquid is received in the inner region of the at least one capillary, the liquid will move from the inner region to the outer region, adopt an unsaturated condition on the at least one surface such that the liquid flows as a film along the at least one surface and does not continuously span the capillary, and, upon reaching the edge, separates from the at least one surface to form at least one particle.

Abstract: A process for preparing a vinyl acetate-ethylene copolymer by means of free-radically initiated emulsion polymerization of vinyl acetate and ethylene and, optionally, further comonomers, performed in the presence of at least one protective colloid and at least one nonionic, ethoxylated emulsifier with an alkyl radical or at least one ethylene oxide-propylene oxide copolymer, and in the absence of chain transfer agent, and, before the initiation of the polymerization, 10% to 70% by weight of the vinyl acetate monomer and 40% to 100% by weight of the ethylene monomer are included in the initial charge, up to 100% by weight of the protective colloid fraction is included in the initial charge, at least 25% by weight of the emulsifier fraction is included in the initial charge, and the remaining fractions of monomers, protective colloid and emulsifier are metered in during the polymerization. A defined criterion of process COP is met.

Abstract: According to the present invention, a novel epoxy group-containing copolymer, including a production process thereof, and an epoxy (meth)acrylate copolymer starting from the epoxy group-containing copolymer, including a production process thereof are provided. The epoxy group-containing copolymer of the present invention contains a specific epoxy group-containing repeating unit and an olefin-based repeating unit. A novel epoxy (meth)acrylate copolymer of the present invention is produced by reacting the epoxy group-containing copolymer with (meth)acrylic acid.

Abstract: The invention provides processes for preparing vinyl acetate-ethylene copolymers by means of free-radical initiated emulsion polymerization of vinyl acetate, ethylene and optionally one or more further comonomers in the presence of at least one protective colloid and optionally at least one emulsifier, characterized in that the vinyl acetate-ethylene copolymers contain 18 to 45% by weight of ethylene units, based on the total weight of the vinyl acetate-ethylene copolymers, and at least 70% by weight of ethylene units, based on the total weight of the ethylene units and of the further comonomer units of the vinyl acetate-ethylene copolymers, and the free-radical initiated emulsion polymerization is performed in the presence of A) 0.5 to 20% by weight, based on the total weight of the monomers used overall, of one or more solvents, or B) 0.1 to 20% by weight, based on the total weight of monomers used overall, of one or more solvents, and 0.

Abstract: Processes for producing high pressure polyethylene and processes for increasing the crosslinkability of high pressure polyethylene are disclosed. The processes comprise controlling particular reaction parameters that have been found to promote crosslinkability in the resulting high pressure polyethylene. High pressure polyethylenes having improved crosslinkability are also disclosed.

Abstract: The invention relates to a single-ply protective film that is devoid of a supporting material and consists of a hot-melt adhesive. Said film can be rapidly and easily applied. The invention also relates to a method for applying said film and to a corresponding device.

Abstract: The invention provides a process for preparing polymers based on vinyl ester, ethylene and optionally further comonomers in the form of aqueous polymer dispersions thereof or of water-redispersible polymer powders by means of free-radically initiated continuous emulsion polymerization and optionally drying of the resulting polymer dispersions, characterized in that the emulsion polymerization is carried out in a cascade comprising at least one upstream heat exchanger and at least two downstream pressurized stirred tank reactors connected in series, such that the conversion on leaving the heat exchanger is at least 10% of the overall polymerization conversion.

Abstract: The present invention relates to a solar module containing at least one layer made up of at least one ?-olefin-vinyl acetate copolymer which has a vinyl acetate content of ?40% by weight, based on the total weight of the ?-olefin-vinyl acetate copolymer, and has been prepared by a solution polymerization process at a pressure of from 100 to 700 bar, the use of the ?-olefin-vinyl acetate copolymer mentioned in solar modules, the use of the solar module of the invention for stationary or mobile power generation and also a solar power plant containing at least one solar module according to the invention.

Abstract: Disclosed are coating compositions that include a continuous phase that includes water and a dispersed phase that includes a microgel having a mean particle size of greater than 50 nanometers. The microgel is formed from reactants selected so as to provide a copolymer having a certain calculated Tg and includes a cycloaliphatic (meth)acrylate.

Abstract: The invention provides a process for preparing vinyl acetate-ethylene copolymers by means of free-radically initiated emulsion polymerization of vinyl acetate and 18% to 34% by weight of ethylene, based on the total weight of the vinyl acetate and ethylene monomers, and, optionally, further comonomers, characterized in that polymerization takes place in the presence of at least one protective colloid and of 0.

Abstract: A method of preparing polymer, the method comprising polymerising one or more ethylenically unsaturated monomers of formula (I) where U is selected from H, C1-C4 alkyl or halogen; V is halogen or of the form O-G where G is selected from —C(O)R1 and —R1, or V is of the form NGGa where G is as defined above and Ga is selected from H and R1, G and Ga form together with N a heterocyclic ring, or V is of the form CH2Gb where Gb is selected from H, R1, OH, OR1, NR12, PR12, P(O)R12, P(OR1)2, SR1, SOR1, and SO2R1; and where the or each R1 is independently selected from optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl, optionally substituted alkylaryl, optionally substituted alkylheteroaryl, and an optionally substituted polymer chain, under the control of a RA

Abstract: The present application relates to a process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. The application also relates to the copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: A terpolymer formed from (A) ethylene, (B) (i) C2- to C14-alkenyl esters of one or more aliphatic C1- to C20-monocarboxylic acids or (ii) C1- to C24-alkyl esters of acrylic acid or methacrylic acid and (C) olefinically unsaturated hydrocarbons selected from (iii) five- to seven-membered cycloalkenes and (iv) ?-olefins having 6 to 20 carbon atoms. The terpolymer mentioned is suitable as a cold flow improver in middle distillate fuels. It lowers the lower mixing temperature of cold flow improver additives into middle distillate fuels and improves the filterability of middle distillate fuels comprising cold flow improver additives.

Abstract: An overcharge inhibitor is provided which increases an internal resistance of a battery, being electropolymerized by reaction with a positive electrode at a high potential in overcharging. The overcharge inhibitor is produced by using a polymer containing a polymerizable monomer as a repeating unit. The polymerizable monomer has a functional group that is electropolymerized at a potential of 4.3 to 5.5 V based on a lithium metal reference.

Abstract: The invention relates to a process for extruding plastic compositions, in particular polymer melts and mixtures of polymer melts, above all thermoplastics and elastomers, particularly preferably polycarbonate and polycarbonate blends, also with the incorporation of other substances such as for example solids, liquids, gases or other polymers or other polymer blends with improved optical characteristics, with the assistance of a multi-screw extruder with specific screw geometries.

Abstract: The present invention provides a high performance backsheet (alternatively referred to backing sheet) for photovoltaic applications and method for manufacture of the same. The high performance backsheet includes a compounded thermoplastic polyolefin or compounded ethylene vinyl acetate (“EVA”). The compounded thermoplastic polyolefin or EVA may be used by itself as one layer, or incorporated into a layer, or as a layer in multilayer laminate. The compounded thermoplastic polyolefin or EVA is useful in eliminating the necessity of using polyester in the backing sheet.

Abstract: There is disclosed a polyvinyl alcohol having a 1,2-glycol bond in a side chain, and a process for preparing the polyvinyl alcolnol wherein there is no generation of dimethyl carbonate hence no need of a process of eliminating dimethyl carbonate in the recovering process of waste liquid after hydrolysis. Also, even when an introduction amount of 1,2-glycol bonds is increased, there is no deterioration of solubility in a hydrolyzing solution (methanol) of a copolymer (paste) before hydrolysis. Further, water-insolubility is not lowered even in experiencing thermal history. Specifically, there is provided a polyvinyl alcohol having a 1,2-glycol bond in a side chain obtained by hydrolyzing a copolymer of a vinyl ester monomer and a compound shown in the formula (1) wherein the hydrolysis degree of the polyvinyl alcohol is at least 60% by mol.

Abstract: Articles made of and/or including ultrahigh molecular weight polyethylene (UMWPE) having increased strength and/or wear resistance, such as high yield strength, high tensile strength, high load strength, and/or high impact strength. Some embodiments of articles made of and/or including UHMWPE having increased strength and/or wear resistance, such as that listed above, include UHMWPE having co-monomers.

Abstract: Disclosed is a sealing resin sheet for allowing a resin layer in a softened state to adhere to and seal a material to be sealed, wherein the resin layer comprises an adhesive resin.

Abstract: The present invention provides coating systems for surfaces and methods for coating and repairing surfaces.

Abstract: A description is given of coating compositions comprising at least one strongly basic agent to set a pH of at least 10, at least one selected vinyl ester copolymer, if desired, pigment and/or filler, and, if desired, further additives customary per se. The coating compositions can be stored without use of additional preservatives and can be used to coat substrates of all kinds.

Abstract: A polymer composition comprising a copolymer obtainable by reacting 1-99 pphwm, preferably 10-90 pphwm of vinyl acetate; 40-8 pphwm of at least one vinyl ester of neoalkanoic acid and at least one additional component selected from the group comprising: (i) 40-1 pphwm of at least one ?-olefin; (ii) 10-0.1 pphwm of at least one functional monomer; (iii) 40-1 pphwm of at least one ester of ethylenically unsaturated carboxylic acids. The compositions are especially useful in or as binders for fibrous substrates, such as woven or nonwoven products including textiles, apparel in general, papers, scrim, engineered fabrics, glass or other mineral fibers, roofing or flooring materials.

Abstract: A protective film of plastic. The film is produced in a single-ply, unbacked form from a hot-melt adhesive.

Abstract: A polymer composition suitable as a binder resin for fibrous substrates such as woven or nonwoven products including textiles, apparel in general, papers, scrim, engineered fabrics, glass or other mineral fibers, roofing or flooring materials is disclosed. The binder resin comprises a copolymer obtainable by reacting: (i) 5-95 pphwm of vinyl acetate; (ii) 95-5 pphwm of at least one vinyl ester of ?-monosubstituted fatty acids; and (iii) 10-0.1 pphwm of at least one functional monomer, such as self-crosslinking monomer, and optionally other comonomers.

Abstract: A building or construction material comprises a fluorinated polymer system. The fluorinated polymer system is heat weldable and waterproofing, which shows improved adhesion properties and has a wide range of applications in building and construction industries.

Abstract: The present invention relates to a vinyl ester based polymer latex composition obtainable by free radical emulsion polymerization in substantial absence of a protective colloid and in the presence of no or small amounts of a surfactant, and to a process of making the same. The invention further pertains to a dispersion incorporating said vinyl ester based polymer latex composition, products comprising said dispersion, and various uses of the dispersion.

Abstract: In a process for the preparation of copolymers containing vinyl esters and ethylene or ethylenically unsaturated monomers by aqueous, free radical polymerization at a pressure of from 5 to 100 bar absolute by the emulsion or suspension polymerization method, after the end of the polymerization, the reaction mixture is let down to a pressure of from 0.1 to 5 bar absolute and recovery of unconverted monomers is effected by multistage fractional low-temperature condensation from the residual gas.

Abstract: The present invention relates a novel pH sensitive polymer which exhibits pH dependant swelling/dissolution behavior. The composition is useful for taste masking of bitter drugs and also for the gastric delivery of the drugs. The said polymer comprises a hydrophobic monomer polymerized along with a basic monomer or a hydrophobic monomer polymerized along with a basic monomer and a hydrophilic monomer.

Abstract: Provided is a method for polymerizing a polymer precursor, comprising: contacting a polymer precursor with a lithium carborane catalyst and an initiator under polymerizing conditions. A reaction solvent may be used, but is not necessary. Also provided is a method of preparing lithium carborane polymers, comprising: contacting a lithium carborane polymer precursor having a terminal alkenyl or alkynyl group with an initiator and an optional reaction solvent under polymerizing conditions. Functionalized carborane anions are also provided.

Abstract: Polymers comprising units derived from ethylene, said polymer having: a) a Melt Index of from 0.05 to 20 g/10 min. as determined by ASTM-1238 Condition E; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, as determined by C13 NMR, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester; c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3 as determined by ASTM D1505; and d) a relaxation time as described herein of at least 10 s. Such polymers can be obtained by free radical polymerization using a chain transfer agent that incorporates into the polymer chain such as an alpha-olefin, preferably propylene, as a chain transfer agent, preferably in a tubular reactor under circumstances to favor LCB formation in a down stream part of the tubular reactor.

Abstract: A recording liquid capable of giving a printed matter which is high in printing density, is suppressed in blur, has high printing quality, and has good fastness of a recorded matter including light fastness, water fastness and the like and having a low viscosity, good discharge properties and excellent storage stability. The invention is concerned with a polyvinyl alcohol based block copolymer represented by the following general formula (1), a pigment dispersion aqueous liquid containing this polyvinyl alcohol based block copolymer and a pigment in an aqueous medium, and a recording liquid containing this pigment dispersion aqueous liquid. wherein A, B, X1, X2, X3, X4, m1, and m2 have the same meanings as defined in the specification.

Abstract: A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170° C., adjusting the amount of water in the extruder so that the water content right after being discharged from the extruder is 5 to 40 weight %, and extruding out the EVOH resin. The extruded EVOH resin is cut into EVOH pellets. Thereby, it is possible to obtain resin pellets in which no spherocrystals are observed in the center of the cross section of the resin when the cross section is observed by the use of a polarization microscope, or no lubricant is contained in the resin pellets, and the angle of repose is 23° or less when the resin pellets are laminated.

Abstract: The invention relates to a polymer synthesized from 0.5 to 30% by weight of vinyl acetate (a), from 0.1 to 10% by weight of monomer containing at least one acid or acid anhydride group (b), from 5 to 70% by weight of at least one monomer other than (a) and (b), having a solubility of more than 5 g/l water (21° C., 1 bar) and a glass transition temperature of less than 15° C. (c), from 0 to 20% by weight of a vinylaromatic monomer having a solubility of less than 5 g/l water (d), from 0 to 90% by weight of at least one C1 to C20 alkyl (meth)acrylate (e) other than (a) to (d), and from 0 to 40% by weight of at least one further monomer (f) other than (a) to (e).

Abstract: A process for preparing ethylene polymers by the high-pressure method comprises dissolving one or more free-radical initiators in one or more ketones of the formula I where R1 and R2 are identical or different and are selected from among C1-C6-alkyl and C3-C12-cycloalkyl and R1 and R2 may also be covalently linked to one another to form a 4- to 13-membered ring, prior to the polymerization, compressing the solution, metering it into the polymerization reactor at one or more points and subsequently carrying out the polymerization at from 150 to 380° C. and from 500 to 4500 bar.

Abstract: Polymers comprising recurring units of cycloolefin having fluorinated alkyl introduced therein are novel and have transparency and alkali solubility. Using the polymers, resist compositions featuring low absorption of F2 excimer laser light are obtained.

Abstract: The present invention provides methods for producing an ethylene-vinyl acetate copolymer and a saponified product thereof that can inhibit visible imperfections (particularly discoloration) at the time of molding by improving the process for recovering vinyl acetate. When the alcohol-based solvent to be blown in when recovering vinyl acetate is deoxidized so that its oxygen concentration becomes not more than 60 ppm, discoloration of a molded product of the above saponified product due to oxygen can be inhibited.

Abstract: The present invention provides a method for manufacturing an ethylene-vinyl acetate copolymer (EVA) in a polymerization solution in a vessel. The polymerization solution includes ethylene, vinyl acetate, methanol and a polymerization initiator. This method includes: cooling a gas including a vapor evaporated from the polymerization solution whereby to produce a condensate of at least a portion of said gas, and introducing said condensate into the polymerization solution whereby to evaporate at least one component in said condensate. Said vapor includes said at least one component.

Abstract: A process for preparing copolymers via free-radical-initiated polymerization of one or more vinyl esters, ethylene, and also, where appropriate, other ethylenically unsaturated monomers copolymerizable therewith, at a pressure of from 5 to 100 bar abs., in an aqueous medium, by emulsion or suspension polymerization, which comprises, after termination of the polymerization, reclaiming residual unreacted ethylene by depressurizing the polymerization reaction mixture to a pressure of from 0.1 to 5 bar absolute, comprising a gas phase containing residual ethylene gas to a pressure of from 2 to 20 bar absolute, absorbing the gas phase into vinyl ester(s), and reusing the resulting solution of ethylene in vinyl esters(s) in a further polymerization.

Abstract: The present invention provides a method for manufacturing an ethylene-vinyl acetate that includes: (a) introducing an ethylene containing gas and a vinyl acetate containing liquid into a heat exchanger, said gas including ethylene vaporized from a polymerization solution; (b) bringing said gas into contact with said liquid in the heat exchanger so as to dissolve at least a portion of the ethylene in said gas into said liquid; and (c) introducing said liquid from the heat exchanger into the polymerization solution. In this method, the ethylene containing gas and the vinyl acetate containing liquid flow in parallel with each other in the heat exchanger.

Abstract: A process for preparing aqueous dispersions or water-redispersible polymer powders of polyvinyl-alcohol-stabilized polymers based on vinyl ester(s), and ethylene, by continuous emulsion polymerization with no seed latex, and optionally drying the dispersion, by a) polymerizing in at least two pressurized reactors in series at a temperature of 40 to 100° C. and a pressure of 5 to 100 bar to a residual monomer content of less than 3% by weight, and continuing polymerizing in an unpressurized reactor at 20 to 60° C. and less than 1.

Abstract: Processes for the controlled radical polymerization of acrylic and related polymers to produce improved low VOC coating materials, or powder coating compositions, the novel polymers so produced, the catalyst systems employed, processes for application of the improved coatings, coatings so produced and objects coated on at least one surface with the novel coatings are disclosed.

Abstract: The invention relates to a process for the preparation of terpolymers of ethylene and at least 2 further olefinically unsaturated compounds by polymerization in a tubular reactor fitted with at least one side branch, wherein the fresh monomer components, which are introduced into the tubular reactor via the reactor inlet (the primary stream) or via the side branch or side branches (secondary stream or secondary streams), in each of the streams contain ethylene and at most one further olefinically unsaturated compound.