Abstract: The present invention relates to a method for continuous production of a water-absorbent resin by use of an continuous polymerization device having a charge part of a monomer aqueous solution; an endless belt on which the monomer and a hydropolymer formed are conveyed; and a discharge part of the hydropolymer, wherein the continuous polymerization device has side walls and a ceiling, and the space ratio in the device represented by the equation, “space ratio in the device=B/A”, is in the range of 1.2 to 20. In the equation, A is a maximum cross-sectional area (cm2) of the hydropolymer during the polymerization in the width direction of the endless belt, and B is a maximum cross-sectional area (cm2) of the space between the endless belt of the continuous polymerization device and the ceiling of the continuous polymerization device in the width direction of the endless belt.

Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain carboxylic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. The polymeric compositions comprise polymerized carboxylic hydrophilic siloxanyl monomers.

Abstract: Fluorescent monomers are described and claimed which are synthesized by reacting a substituted or non-substituted naphthalic anhydride with an amine and with a moiety containing a polymerizable group. Such monomers are useful for the preparation of tagged treatment polymers. Such tagged treatment polymers are useful as scale inhibitors in industrial water systems.

Abstract: Temporary sizing agent for natural and/or artificial individualized textile fibres comprises a water-soluble homopolymer or copolymer of at least one acrylamide monomer having a molecular weight not less than one million, advantageously more than three millions.

Abstract: The present invention relates to novel N-Poly (alkenyl) acryl amides of formula (1) where in m=1-8, n=2-100 and to a process for preparation thereof and process for preparation thereof by reacting an unsaturated poly(olefin) of the formula CnH2m where n and m are as given above with acrylonitrile in presence of an acid catalyst.

Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.

Abstract: Methods of treating a portion of a subterranean formation comprising: providing an aqueous treatment fluid comprising an aqueous fluid and a friction reducing copolymer that comprises acrylamide and 2-(2-ethoxyethoxy)-ethyl acrylate and introducing the aqueous treatment fluid into the portion of the subterranean formation. Methods of fracturing a subterranean formation comprising: providing an aqueous treatment fluid comprising an aqueous fluid and a friction reducing copolymer that comprises acrylamide and 2-(2-ethoxyethoxy)-ethyl acrylate and introducing the aqueous treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. Aqueous treatment fluids comprising: an aqueous fluid and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester.

Abstract: Ion exchange resins are described that are hydrophilic, crosslinked (meth)acrylic copolymers. The ion exchange resins are macroporous, have a surface area of at least 50 m2/g, and an average particle size of at least 20 micrometers. Additionally, chromatographic columns containing the ion exchange resins, composite materials containing the ion exchange resin, filtration elements containing the ion exchange resin, methods of preparing the ion exchange resins, and methods of separating or purifying negatively or positively charged materials with the ion exchange resins are described.

Abstract: A flow improver comprising a plurality of core-shell particles that can be formed by emulsion polymerization. The core of the core-shell particles can include a drag reducing polymer, while the shell of the particles can include repeat units of a hydrophobic compound and an amphiphilic compound. The flow improver can demonstrate increased pumping stability over conventionally prepared latex flow improvers.

Abstract: A synthetic cell culture surface, prepared from a polymerized blend of at least two (meth)acrylate monomers is provided, which supports the growth of undifferentiated human embryonic stem cells in defined media augmented with fetal bovine serum. The cell culture surface forms a uniform layer over the growth area of a typical cell culture vessel.

Abstract: A method of suppressing dust formation in a particulate mineral material, which particulate mineral material has been dewatered from a suspension of said material, comprising the steps of transferring the suspension of particulate mineral material as a fluid to a deposition area, and in which the suspension is allowed to stand and dewater at the deposition area to form a dewatered particulate mineral material, wherein suppression dust formation of the material is achieved by adding a dust suppressing amount of a polymer to the suspension of the particulate mineral material while it is being transferred as a fluid to the deposition area, wherein the polymer is either a synthetic water-soluble polymer formed from one or more ethylenically unsaturated monomers having an intrinsic viscosity of at least 4 dl/g or a water-soluble polymer that is a natural polymer or semi natural polymer.

Abstract: UV-absorbing polymers and copolymers suitable for Composition into sunscreens for the protection of human skin. The UV-absorbing chromophoric monomers chosen are simple and easily synthesized. With the correct choice of chromophoric monomer or mixture of monomers, protection against UV-A radiation or against both UV-A and UV-B radiation can be achieved. With the correct choice of comonomer, copolymers produced as aqueous latex emulsions or as Polyethylene Glycol solutions can also be achieved.

Abstract: [Problems] The present invention provides a method for efficiently producing a corresponding amide compound from a nitrile compound by a reaction using a nitrile hydratase and a method for producing an amide-based polymer excellent in quality from the amide compound. In addition, the present invention provides a method for more efficiently producing an acrylamide with higher quality by a microbial catalyst containing a nitrile hydratase and the like and a method for producing an acrylamide-based polymer, which is excellent in hue, has a good balance between the water solubility and the high molecular weight and is also excellent in quality, by using the acrylamide. [Means for Solving the Problems] The method for producing an amide compound of the present invention is characterized in that in a method for producing an amide compound from a nitrile compound in an aqueous medium in the presence of a catalyst having a nitrile hydratase activity, the concentration of benzene in the aqueous medium is 4.

Abstract: Method of purifying an open-chain N-vinyl compound by crystallization in a crystallizer, the crystallization being carried out from a melt of a mixture comprising open-chain N-vinyl compound at a pressure of 10?3 to 400 bar.

Abstract: Copolymers based on unsaturated mono- or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers and optionally vinylic polyalkylene glycol or ester compounds are described and also their use as additives for aqueous suspensions based on mineral or bituminous binders, in particular cement, gypsum, lime, anhydrite, or other calcium sulphate-based binders, and based on pulverulent dispersion binders. The copolymers according to the invention impart to the aqueous binder suspensions a very good dispersing and liquefying action with, at the same time, simultaneous excellent processing properties. Moreover, the oxyalkylene glycol alkenyl ethers according to the invention are industrially relatively simple and inexpensive to prepare and need comparatively low initiator concentrations in the copolymerization.

Abstract: A process of making paper by providing a cellulosic suspension comprising cellulosic fibres and optionally fillers, dewatering the cellulosic suspension on a wire or mesh to form a sheet and drying the sheet in which a polymeric additive is included in the process, in which the polymeric additive is a polymer comprising an ethylenically unsaturated water-soluble or potentially water-soluble monomer and an ethylenically unsaturated monomer carrying a reactive group.

Abstract: Process for preparing an aqueous copolymer dispersion, with specific crosslinker metering.

Abstract: Free radical polymerization process for preparing polymers with low polydispersity index and polymers obtained thereby. The process includes polymerizing at least one reactive monomer with at least one initiator and at least one ionic liquid (serving as solvent) to obtain polymers having a low polydispersity index of less than 1.5, wherein the reactive monomer is a nitrogen-containing monomer. In addition, the free radical polymerization processes have reaction time within 3 hours.

Abstract: A novel photoactive copolymer and its use as orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multilayer systems. The copolymer contains side chains incorporating photoreactive groups and simultaneously side chains of general formula (I) wherein the total number of rings, including the number of rings in optionally present condensed systems is at least two and at most six; wherein the broken line symbolizes the point of linkage to the polymer main chain; and wherein the variables are defined in the disclosure.

Abstract: A method of applying a biocidal polymer to a surface including applying a solution of the biocidal polymer to the surface, wherein the biocidal polymer includes biocidal groups and the biocidal polymer is insoluble in water. The biocidal groups can be selected from the group consisting of quaternary salt groups or haloamino groups.

Abstract: This invention relates to polymerizable ultraviolet light absorbers and yellow colorants and their use in ophthalmic lenses. In particular, this invention relates to polymerizable ultraviolet light absorbing methine compounds and yellow compounds of the methine and anthraquinone classes that block ultraviolet light and/or violet-blue light transmission through ophthalmic lenses.

Abstract: A novel hybrid polymer has a structure in which a polyolefin segment and a polar polymer segment are connected not via a bonding group containing a heteroatom. A method of the invention produces the hybrid polymer with industrial advantages. The hybrid polymer includes a polyolefin segment (A) and a polar polymer segment (B), the polar polymer segment being obtained by radical polymerization of a radically polymerizable monomer.

Abstract: Methods of treating a portion of a subterranean formation, comprising: providing an aqueous treatment fluid comprising water, and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester; and introducing the aqueous treatment fluid into the portion of the subterranean formation. Methods of fracturing a subterranean formation comprising: providing an aqueous treatment fluid comprising water, and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester; and introducing the aqueous treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. Aqueous treatment fluids comprising: an aqueous fluid and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester.

Abstract: The invention relates to the use, in emulsion polymerization, of at least a compound derived from a terpene and comprising a number of oxypropylene units ranging between 0 to 20, and a number of oxyethylene units ranging between 2 to 80.

Abstract: The invention provides a soil releasing agent for fiber, including a polymer having a weight-average molecular weight in a range from 2,000 to 30,000, and containing a structural unit (A) and a structural unit (B) the content of the structural unit (A) in the polymer being 50 to 99 percent by weight, and the content of the structural unit (B) in the polymer being 1 to 50 percent by weight: (A) a structural unit derived from a monomer which has an unsaturated bond and at least one amino group selected from a primary amino group, a secondary amino group and a tertiary amino group; (B) a structural unit derived from a monomer which has an unsaturated bond and at least one hydrophobic group selected from the group consisting of an alkyl or alkenyl group, each having 4 to 22 carbon atoms, being straight, branched or cyclic, an arylalkyl group having 1 to 22 carbon atoms in the alkyl group and an aryl group, and which monomer has no primary to tertiary amino group and then a method for treating fiber is conducted i

Abstract: Articles coated with a water-resistant coating that absorbs water to provide the water-resistant effect, and desorbs water when the coating is dried, and a method of providing water resistance and corrosion resistance to articles prepared with such coatings. The coating is formed by applying a composition comprising an aqueous solution of a superabsorbent water-soluble polymer precursor, optionally a viscosity modifying agent, and optionally a lubricant onto the surfaces of the article, and curing to form a coating comprising the superabsorbent polymer.

Abstract: The use of NIPAM polymers to prevent or reduce the formation of protein deposits on the surfaces of medical devices is described. The invention is particularly directed to reduction of the adsorption of proteins on surfaces of contact lenses and other medical prosthetics.

Abstract: A novel (meth)acrylamide polymer capable of forming a papermaking chemical exhibiting an excellent paper strengthening effect, drainage improvement effect, retention improvement effect, plybond strength enhancing effect, surface strength enhancing effect, and sizing improvement effect in acid, neutral, or alkaline papermaking systems, as well as a method for manufacturing this polymer, and paper that makes use of this polymer and has excellent bursting strength, internal bond strength, and other such properties is provided. This is a (meth)acrylamide polymer produced by polymerizing a monomer (a) expressed by the following general formula 1, the following monomer (b), and the following monomer (c): (a) general formula 1: (b) a (meth)acrylamide; (c) an ionic monomer other than monomer (a) expressed by general formula 1 above.

Abstract: A copolymer useful as a demulsifier or water clarifier may be prepared by polymerizing at least one aromatic monomer having one or more polymerizable double bonds; at least one oleophilic monomer having one or more polymerizable double bonds; at least one ionizable monomer having a polymerizable double bond; and at least one hydrophilic monomer having one or more polymerizable double bonds, under polymerization conditions sufficient to prepare a copolymer. The copolymer may, in some embodiments, be prepared and used as a latex.

Abstract: A process for producing a polymer powder comprising vinylformamide units by free radical polymerization of an aqueous solution of N-vinylformamide and if appropriate other monomers and drying the polymer which comprises an aqueous monomer solution comprising N-vinylformamide and at least one polymerization initiator being spray dispensed as an aerosol or dropletized at the top of a heatable tower-shaped reactor, then polymerizing the aerosol or droplets in an inert gas atmosphere to form a finely divided solid and discharging the finely divided polymer from the reactor.

Abstract: The use of NIPAM polymers to prevent or reduce the formation of protein deposits on the surfaces of medical devices is described. The invention is particularly directed to reduction of the adsorption of proteins on surfaces of contact lenses and other medical prosthetics.

Abstract: A protein stabilizing agent comprising a copolymer comprising: a repeating unit (A) represented by the following formula (1) and a repeating unit (B) represented by the following formula (2): wherein R1, R2, R3 and R4 are defined in the description.

Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.

Abstract: Dendritic amphiphilic polymers are contemplated. Most preferably, such polymers will be fabricated in a single step to the final product that may further be derivatized with, among others, biological relevant molecules. In alternative aspects, precursors of such molecules are prepared in a single step, and the precursors are then reacted to the dendritic amphiphilic polymers.

Abstract: The present invention concerns a process for controlled radical polymerisation of acrylic acid and its salts in a reactive medium constituted solely of water. The invention also concerns homopolymers and copolymers of acrylic acid obtained by the polymerisation process. Finally, the invention concerns the use of the said homopolymers and copolymers of acrylic acid in fields of industry such as the paper field and in particular the coating of paper and the mass-filling of paper, the oil field, or the fields of paint, water treatment, detergency, ceramics, cements or hydraulic binders, public works, inks and varnishes, sizing of textiles or the finishing of leather.

Abstract: The present invention relates to compositions comprising a light absorbing prepolymer having a molecular weight of between about 7,000 and about 100,000 and polymeric units derived from and least one reactive light absorbing component and monomers selected from the group consisting of hydrophilic monomers, hydrophobic monomers and mixtures thereof. The compositions of the present invention are useful for the manufacture of ophthalmic devices, including contact lenses.

Abstract: The invention provides a process which enables, in preparation of acrolein by catalytic gas-phase oxidation of propylene in the presence of molecular oxygen or a molecular oxygen-containing gas or in preparation of acrylic acid by catalytic gas-phase oxidation of acrolein in the presence of molecular oxygen or a molecular oxygen-containing gas, using single kind of atalyst, to suppress occurrence of localized extraordinarily high temperature spots (hot spots) in the catalyst layer and can stably maintain high acrolein or acrylic acid yield for a long time. The process is characterized by use of an oxide catalyst containing molybdenum as an essential component and having relative standard deviation of its particle size in a range of 0.02 to 0.20.

Abstract: The present invention relates to a substrate having one or more antimicrobial or antistatic properties. Such properties are imparted by applying a coating or film formed from a cationically-charged polymer composition. The polymer composition includes a noncationic ethylenically unsaturated monomer and an ethylenically unsaturated monomer capable of providing a cationic charge to the polymer composition. Optionally, the polymer composition includes a steric stabilization component incorporated into the cationically-charged polymer composition. The present invention also relates to a personal care product and polymeric material comprising a base polymer blended with the above cationically-charged polymer composition.

Abstract: A polysiloxane copolymer that is useful for forming biomedical devices comprises blocks (I) and (II) and is terminated at each end with an ethylenically unsaturated radical: (*Dii*Diol*Dii*PS)x ??(I) (*Dii*PS)y ??(II) wherein: each Dii is independently a diradical residue of a diisocyanate; each Diol is independently a diradical residue of a diol having 1 to 10 carbon atoms; each PS is independently a diradical residue of a polysiloxane-containing diol or diamine; each * is independently —NH—CO—NH—, —NH—COO— or —OCO—NH—: x represents the number of blocks (I) and is at least 2, and y represents the number of blocks (II) and is at least 1.

Abstract: A thermal responsive, water soluble copolymer is disclosed, which comprises the co-polymerization product of: (a) 0.5˜20 wt % of N-isopropyl acrylamide (NIPAAm); (b) 0.5˜20 wt % of 1-vinyl-2-pyrrolidinone (VPD); (c) 0.01˜10 wt % of acrylic acid (AA); and (d) 80˜90 wt % of acrylamide. The viscosity of.the co-polymerization product is adjustable by temperature. Moreover, phase-separating does not occur in the copolymer while temperature is changing and the structure as well as the fluidity are maintained, therefore, the copolymer of the present invention is suitable for the application of a micro-fluidic chip.

Abstract: The invention relates to a process for the production of water-soluble or water-swellable polymers having a low content of residual monomers, particularly on the basis of acrylic acid and/or acrylamide and at least one additional water-soluble comonomer, in which process a monomer solution in a polymerizing state is treated with electromagnetic radiation at the earliest after reaching the maximum temperature of polymerization, and the gel obtained is subsequently crushed and dried, and it also relates to the water-soluble or water-swellable polymers as such, which can be obtained according to said process, to their use in the hygiene industry, packaging industry, in the agrarian technology or in agriculture and horticulture, in the cable industry and information technology, in the food industry, papermaking industry, and to their use as flocculation aids and as drilling fluid in petroleum production.

Abstract: A process for preparing precipitation polymers by spray polymerization of a monomer solution comprising at least one ethylenically unsaturated monomer and at least one solvent, the monomer being soluble in the solvent, and the polymer obtained by the polymerization of the monomer being insoluble in the solvent, and also the use of the polymers for thickening liquids.

Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.

Abstract: The invention relates to a cross-linked, water-swellable polymer that contains polymerized into it moieties of a) water-soluble, monoethylenically unsaturated monomers, and b) 0.001 to 5 mole % based on the monomers a) of a cross-linking combination, b1) a frist cross-linking agent with at least two (meth)acrylic ester moieties in the molecule and b2) a second cross-linking agent with at least two (meth)allyloxy moieties in the molecule, the molar ratio of b1) to b2) ranging from 0.7:1 to 10:1. The polymer according to the invention has a balanced property profile as regards absorptivity, gel strength, absorption speed and extractable componenents and can be advantageously produced by a continuous method.

Abstract: Solubilizers prepared by polymerizing: (i) at least one first monomer of the general formula (I): wherein R1 and R2 each independently represent H or CH3, R3 represents a C6-C10-aryl or C7-C12-aralkyl which may be unsubstituted or substituted with one or more C1-C9-alkyl and/or C1-C5-alkoxy substituents, and n represents an integer from 0 to 100; and (ii) at least one second monomer selected from the group consisting of N-vinylamides, N-vinyllactams, N-vinylimines, N-vinylamines having 2 to 15 carbon atoms, and mixtures thereof; and methods of solubilizing active ingredients by combining them with such a solubilizer.

Abstract: An antireflection film-forming composition which has excellent applicability, is significantly inhibited from generating ultrafine microbubbles, gives an antireflection film capable of sufficiently reducing the standing-wave effect, and has excellent solubility in water and an alkaline developing solution. The antireflection film-forming composition contains: (A) a copolymer (salt) of a sulfonic acid group-containing acrylamide derivative represented by, e.g., 2-(meth)acrylamido-2-methylpropanesulfonic acid and a fluoroalkyl group-containing acrylic acid ester derivative represented by, e.g., 2,2,3,3,3-pentafluoropropyl (meth)acrylate; and (B) a surfactant whose 0.1 wt. % aqueous solution has a surface tension as measured at 25° C. of 45 mN/m or lower.

Abstract: Disclosed are multi-purpose polymers that are the polymerization product of a monomer mixture comprising at least one amino-substituted vinyl monomer; at least one nonionic vinyl monomer; at least one associative vinyl monomer; at least one semihydrophobic vinyl surfactant monomer; and, optionally, comprising one or more hydroxy-substituted nonionic vinyl monomer, crosslinking monomer, chain transfer agent or polymeric stabilizer. These vinyl addition polymers have a combination of substituents, including amino substituents that provide cationic properties at low pH, hydrophobic substituents, hydrophobically modified polyoxyalkylene substituents, and hydrophilic polyoxyalkylene substituents. The polymers provide surprisingly beneficial rheological properties in acidic aqueous compositions, and are compatible with cationic materials. The multi-purpose polymers are useful in a variety of products for personal care, health care, household care, institutional and industrial care, and industrial applications.

Abstract: An acrylic composition includes the reaction product of an acrylic polymer, a carboxylic acid compound, and an alkyl carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid compound has carboxylic acid functionality that is reactive with the acrylic polymer. The alkyl carbamate is reactive with the hydroxyl-functional acrylic polymer to form the acrylic composition. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.

Abstract: Provided is an alkali-soluble maleimide-based copolymer which comprises, as essential constituents, 5 to 50% by mass of a maleimide monomer unit which is at least one unit selected from the group consisting of a N-cyclohexylmaleimide monomer unit, a N-benzylmaleimide monomer unit and a substituted N-benzylmaleimide monomer unit, 8 to 30% by mass of the (meth)acrylic acid monomer unit and 30 to 87% by mass of a (meth)acrylic acid ester monomer unit and which satisfies the condition represented by the formula: 0.4×X?Y?0.5×X+10 where X is the content, in % by mass, of the N-cyclohexylmaleimide monomer unit, the N-benzylmaleimide monomer unit and the substituted N-benzylmaleimide monomer unit and Y is the content, in % by mass, of the (meth)acrylic acid monomer unit. Also provided are a color filter and a liquid crystal display which are formed by using the ionizing radiation-curable resin composition.

Abstract: In a method for producing an amide compound of the present invention including obtaining an amide compound from a nitrile compound using a microbial catalyst and transferring a solution containing the microbial catalyst and the amide compound, a positive-displacement pump is used for transferring the solution containing a microbial catalyst and an amide compound to obtain an amide compound having few impurities. A monomer including (meth)acrylamide obtained by the method for producing an amide compound is polymerized to prepare an acrylamide polymer having a high-molecular mass and high solubility and being colorless.