Abstract: Disclosed is a fiber binding powder composition for consolidating fiber materials, comprising a) a polymer powder based on a polyvinyl alcohol stabilized polymer of one or more monomers selected from the group consisting of the vinyl esters of branched or unbranched carboxylic acids having 1 to 12 carbon atoms, the esters of acrylic acid and methacrylic acid with branched or unbranched alcohols having 1 to 12 carbon atoms, aromatic vinyl compounds, vinyl halides, olefins and dienes, and b) an inorganic compound which is solid at room temperature and which enters a chemical bond with the OH groups of the polyvinyl alcohol on introduction of said powder into water.

Abstract: Vinyl alcohol polymers having an ethylene unit content of 2 to 19 mole %, a polymerization degree of 200 to 2,000, a degree of saponification of 80 to 99.99 mole % and a total content of carboxyl group and lactone rings of 0.02 to 0.4 mole % are excellent in thermal stability, water resistance, gas-barrier properties, water vapor-barrier property, stability of aqueous solution kept at low temperatures and biodegradability.

Abstract: Poly(vinyl butyral) compounds of Formula 1 where R1 is alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, or alkyl aralkyl; Z is —OH or —NHR2, where R2 is independently alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, alkyl, aralkyl or R2 is H. x is 60 to 95 mol %, y is 3 to 40 mol %, z is 0 to 20 mol %; and x+y+z is 100 mol %, a process for preparing compounds of Formula I, an intermediate in the synthesis of compounds of Formula I, and a photoconductor for electrophotography containing a compound of Formula I as a binder in the charge generation layer are described.

Abstract: A novel fluorinated aromatic acetal polymer comprises at least one unit of A and at least one unit of B or C, or at least one unit of each of A, B and C and optionally further comprises at least one unit of either D or E or at least one unit of each of D and E, wherein the units A and B and/or C, and optionally D and/or E are linked together by single covalent C-C bonds and have the formulae: 1

Abstract: Polymers comprising fluorinated vinyl alcohol units and having acid labile groups partially introduced are novel. Using such polymers, resist compositions featuring transparency to excimer laser light and alkali solubility are obtained.

Abstract: A novel fluorinated aromatic acetal polymer comprises at least one unit of A and at least one unit of B or C, or at least one unit of each of A, B and C and optionally further comprises at least one unit of either D or E or at least one unit of each of D and E, wherein the units A and B and/or C, and optionally D and/or E are linked together by single covalent C—C bonds and have the formulae: wherein RA is H or C1-C11 alky, or an aryl group that does not contain fluorine, and RB and RC are an aryl groups that contain fluorine. The polymer is prepared by reacting a hydrolyzed polyvinyl acetate polymer or copolymer with at least one non-fluorinated aldehyde component, and at least one fluorinated aromatic component. The polymer is useful is preparing a photosensitive composition which comprises at least one diazo resin and at least one such fluorinated aromatic acetal polymer.

Abstract: There is provided a process for producing particles of amine reaction product by means of a carrier having a melting point between 30 degrees Celsius and 135 degrees Celsius, optionally followed by a coating step. Processed amine reaction products and finished compositions incorporating such processed product are also herein provided.

Abstract: A solution containing a metal alkoxide or oligomers thereof, a vinyl carboxylate polymer and an organic solvent is used, and, while low boiling substances containing the organic solvent is removed, both polycondensation of the metal alkoxide or oligomers thereof and saponification of the vinyl carboxylate polymer are conducted in parallel with each other and in the same reaction zone. On the occasion, the metal alkoxide or oligomers thereof is used in an amount of the metal atom present in the metal alkoxide or oligomers thereof of 0.01 to 100 moles based on 100 moles of the acyl group originating from the vinyl carboxylate unit present in the vinyl carboxylate polymer. This process can produce vinyl alcohol polymer compositions comprising a metal oxide without causing property unevenness, the compositions being capable of maintaining their excellent gas-barrier properties when exposed to high-temperature and high-humidity conditions or after being repeatedly bent.

Abstract: Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.

Abstract: Water-dilutable polyvinylbutyral dispersions obtainable by a two-stage reaction in the first stage of which at least one tertiary alkanolamine A and at least one diisocyanate B are reacted to the theoretically calculated NCO content and the amounts of components A and B are chosen such that the amount of substance of the diisocyanates B is from 0.8 to 1.3 times the amount of substance of the reactive hydroxyl groups in A and thereafter in the second stage a polyvinylbutyral C dissolved in a solvent which is inert towards isocyanates is reacted with the adduct AB from the first step to form the product ABC until all of the isocyanate groups have undergone complete reaction, the number of hydroxyl groups in C being at least ten times the number of isocyanate groups in the reaction product AB.

Abstract: A bloom inhibitor which comprises (A) an alkylene oxide adduct of a saponified ethylene-saturated carboxylic acid vinyl ester copolymer, and (B) a polyether compound; a rubber composition comprising a rubber and the bloom inhibitor; and a vulcanized rubber in which blooming is prevented obtained by vulcanizing the rubber composition are provided.

Abstract: A polyvinyl acetal copolymer compound comprises the units A, B, C and D, wherein A is present in an amount of 0.5 to 30 wt.

Abstract: The invention provides a method for preparing a 1-benzotriazolylcarbonate ester of a water-soluble and non-peptidic polymer by reacting a terminal hydroxyl group of a water-soluble and non-peptidic polymer with di(1-benzotriazolyl)carbonate in the presence of an amine base and an organic solvent. The polymer backbone can be poly(ethylene glycol). The 1-benzotriazolylcarbonate ester can then be reacted directly with a biologically active agent to form a biologically active polymer conjugate or reacted with an amino acid, such as lysine, to form an amino acid derivative.

Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.

Abstract: Methods of making polymer resin/dispersed modifier compositions are provided. The polymer resin/dispersed modifier compositions have improved melt processability and properties and may be used to thermally process films, fibers, and articles having improved properties. In one embodiment, the polymer resin/dispersed modifier compositions are further grafted with one or more monomers, which graft onto the polymer resin and/or the dispersed modifier. In a further embodiment, the polymer resin is a water-soluble or water-dispersible polymer, such as polyethylene oxide; the modifier is a styrene butadiene polymer, a carboxylated acrylonitrile-butadiene-styrene polymer, or a combination thereof; and the grafted monomer is poly(ethylene glycol) ethyl ether methacrylate, poly(ethylene glycol)ethyl ether acrylate, 2-hydroxyethyl methacrylate (HEMA), poly(ethylene glycol) methacrylate (PEG-MA), or a mixture thereof.

Abstract: Polymers are derivatized and then may be introduced into a wellbore, such as in a hydraulic fracturing treatment. A polymer may be a guar powder that is mixed with a organic solvent and derivatized using a derivatizing agent, such as sodium chloroacetate. The polymer is typically derivatized in bulk prior to introduction into the wellbore. The derivatized polymer may be hydrated and/or crosslinked prior to introduction into the wellbore.

Abstract: The present invention provides a process for the production of hyaluronic acid (HA) derivatives cross-linked with another polymer, in particular multiple e.g. double cross-linked hyaluronic acid derivatives. The invention also provides novel cross-linked derivatives, products containing them and their uses in cosmetic, medical and pharmaceutical applications.

Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, polyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as dialdehydes or zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.

Abstract: Process for functionalizing a water-soluble or water-dispersible polymeric organic binder, in which unmodified, water-soluble or water-dispersible polymeric organic binders are reacted with one or more polar aprotic swelling agents which are compatible with the binder, with thorough mixing with one or more compounds which have groups capable of free radical polymerization, compositions obtainable thereby and radiation-sensitive mixtures which contain, as essential components, the above composition, at least one photopolymerization initiator, if required one or more ethylenically unsaturated, photopolymerizable low molecular weight compounds which are compatible with the polymeric binder and further conventional additives and/or assistants, and radiation-sensitive letterpress or relief printing plates which can be produced therefrom.

Abstract: An adsorbent, polystyrene spherical resin grafted with polyethylene glycol characterized in that polystyrene resin is crosslinked with 1 to 10 wt % of divinylbenzene, the content of polyethylene glycol is more than 50 wt % and the molecular weight of polyethylene glycol part, is more than 500 Da, is described. In addition processes for decontaminating dye contained in waste water of dye industry, heavy metal ion contained in waste water, surfactant, humic substance contained in trash sediment effectively and quickly by using the said adsorbent, are disclosed.

Abstract: In the present invention, particles of an ethylene-vinyl alcohol copolymer (EVOH) are contacted with a solution containing a boron compound, whereby to obtain a substantially homogeneous distribution of the boron compound within the particles. For example, EVOH and the solution are continuously fed into a treatment apparatus and brought into contact with each other in the treatment apparatus, and the EVOH when continuously removed from the apparatus is in contact with the solution containing the boron compound in a concentration of at least 0.7 times but not more than 1.3 times a solution equilibrium concentration.

Abstract: Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group.

Abstract: Provided are a water resistant composition comprising a uniform mixture of (A) at least one of modified polyvinyl alcohol containing either from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms, from 0.01 to 1 mol % of silyl groups, or from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms and from 0.01 to 1 mol % of silyl groups and (B) an organotitanium compound having a chelating ligand, in a blend ratio of component (A) to the component (B) between 99.99/0.01 and 60/40 by weight; a coating agent comprising the composition; a thermal recording material having a coat layer of the composition; and an ink-jet recording material having an ink-absorbing layer of the composition.

Abstract: The present invention provides a polarizing film having a dichroic ratio of at least 20 and comprising a polyvinyl alcohol derivative with a polyvinylene structure as obtained from a polyvinyl alcohol material having a degree of polymerization of at least 2000. The polarizing film of the present invention has excellent polarizing properties in the range of the visible ray spectrum, and exhibits excellent durability when left in high-temperature and high-humidity surroundings for a long period of time. The polarizing film of the present invention is useful for a polarizing sheet laminated with a protective film for on-vehicle LCD that is placed in heavy temperature and humidity fluctuations, such as LCD navigation systems, LCD TV, etc.

Abstract: Disclosed are inorganic-organic copolymers and their preparation using polyvinylalcohol-silane coupling agents. The inorganic-organic copolymers can be prepared through the reaction of silane-coupling agents containing hydroxy groups and silane groups with organic metal compounds. The inorganic-organic copolymers are of high transparency as well as shows superb moisture barrier characteristics and hydrophilicity and can be applied as resins or film coatings for many fields, including anti-fogging agents, anti-foaming agents, lubricants, paints, anti-corrosive coatings, water-resistant coatings, plastic or metal-protective coatings.

Abstract: Polyvinyl ester dispersions which can be employed as binders in building materials, preferably in the form of redispersible plastics powders, are obtained by polymerization of at least one vinyl ester and optionally other monomers which can be copolymerized with vinyl ester, by use of water-soluble cationic azo initiator.

Abstract: Embolic compositions comprising macromers having a backbone comprising a polymeric backbone comprising units with a 1,2-diol or 1,3-diol structure, such as polyvinyl alcohol, and pendant chains bearing crosslinkable groups and, optionally, other modifiers. When crosslinked, the macromers form hydrogels having many properties advantageous for use as embolic agents to block and fill lumens and spaces. The embolic compositions can be used as liquid embolic agents and crosslinked in situ or as preformed embolic articles, such as microspheres.

Abstract: A process for the preparation of an immunoadsorbent matrix includes preparing polyvinyl alcohol beads by partially crosslinking polyvinyl alcohol (PVA) with a crosslinking agent to provide polyvinyl alcohol beads which are at least partially crosslinked; coupling phenylalanine onto the polyvinyl alcohol beads to obtain a —COOH functionality for the phenylalanine coupled polyvinyl alcohol beads; and activating the —COOH functionality for immobilizing heparin onto the phenylalanine coupled polyvinyl alcohol beads.

Abstract: The invention relates to a process for the production of moldings, in particular contact lenses, in which a water-soluble crosslinkable polymer is crosslinked in solution, and to moldings, in particular contact lenses, obtainable by this process.

Abstract: Particularly useful as a barrier layer in packaging, e.g. multilayer structures, is a composition based on an ethylene-vinyl alcohol copolymer comprising: 50 to 98% by weight of an EVOH copolymer 1 to 50% by weight of a polyethylene (A) 1 to 15% by weight of a polyethylene (B) being a blend of a polyethylene (B1) and a polyethylene (B2) chosen from elastomers, very-low-density polyethylenes and metallocene polyethylenes, the blend of (B1) and (B2) being cografted by an unsaturated carboxylic acid or a functional acid derivative thereof.

Abstract: There is a vinyl 4-hydroxybenzal-vinylalcohol-vinyl acetate copolymer, a 4-t-butoxycarbonyloxybenzal-vinyl alcohol-vinyl acetate copolymer and a vinyl 4-t-butoxycarbonyloxybenzal-vinyl 4-hydroxybenzal-vinyl alcohol-vinyl acetate copolymer suitable for photoresist and methods for preparing the same. The latter two polymers contain 4-hydroxybenzal groups all or parts of which are protected with t-butoxycarbonyl group. Superior in transparency, thermal stability, mechanical strength, and adhesiveness to silicon wafer, the photoresists prepared from the protected copolymers can enhance the resolution of fine circuit by virtue of low weight loss upon the thermal treatment after exposure.

Abstract: The present invention relates to particular acetal copolymers and radiation-sensitive compositions comprising said copolymers and, inter alia, are excellently suitable for the production of lithographic printing plates. In particular, the invention relates to acetal copolymers containing furylvinylidene, thienylvinylidene or pyrrolylvinylidene.

Abstract: The use of graft copolymers obtainable by grafting a) polyalkylene oxides with b) at least one monomer selected from the group of b1) C1-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; b2) vinyl esters of aliphatic C1-C30-carboxylic acids; b3) C1-C30-alkyl vinyl ethers; b4) N—C1-C12-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids; b5) N,N—C1-C12-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids as solubilizer.

Abstract: The invention relates to a novel process for the production of mouldings, in particular contact lenses, in which a soluble prepolymer comprising units containing a crosslinkable group and at least one unit containing a modifier is crosslinked in solution, and to mouldings, in particular contact lenses, obtainable by this process. The present invention likewise relates to novel prepolymers which can be employed in the novel process, in particular derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 which comprises from about 0.

Abstract: A positive acting, heat-sensitive composition is presented, either coated on a lithographic base, or on a printing circuit board base, and comprises a water insoluble heat-sensitive resin, a novel adhesion promoter and a radiation absorbing agent—a dye or a pigment. An excellent film forming polymer that comprises acetal units directly pendant from the polymer polyvinyl alcohol backbone may be the only binder resin, when other resins being optional. The solubility of the coated material in the areas exposed to near-IR laser radiation in mild alkaline developers becomes considerably higher, allowing to obtain high resolved patterns of the etch-resistant material on printing circuit boards or lithographic printing plates. The composition can be applied on the substrate from a liquid or laminated as a dry film.

Abstract: This invention relates to an aromatic ester (meth)acrylate dendrimer composed of the core formed by an aromatic polycarboxylic acid and the branches formed by an aromatic compound containing one hydroxyl group and two carboxyl groups and represented by the following general formula (1) and also to a curable resin composition which contains the dendrimer and a polymerization initiator as essential components, is low in viscosity and highly curable, and forms a coating film with excellent heat and moisture resistance.

Abstract: A composition including: a polymeric compound including a polyvinyl butyral moiety, an optional polyvinyl alcohol moiety, an optional polyvinyl acetate moiety, and a modified polyvinyl moiety of the formula where R is an organic substituent, wherein the polyvinyl alcohol moiety has a hydroxyl content that ranges from 0% to about 5% by weight when —OR is an acetate.

Abstract: There is a vinyl 4-hydroxybenzal-vinylalcohol-vinyl acetate copolymer, a 4-t-butoxycarbonyloxybenzal-vinyl alcohol-vinyl acetate copolymer and a vinyl 4-t-butoxycarbonyloxybenzal-vinyl 4-hydroxybenzal-vinyl alcohol-vinyl acetate copolymer suitable for photoresist and methods for preparing the same. The latter two polymers contain 4-hydroxybenzal groups all or parts of which are protected with t-butoxycarbonyl group. Superior in transparency, thermal stability, mechanical strength, and adhesiveness to silicon wafer, the photoresists prepared from the protected copolymers can enhance the resolution of fine circuit by virtue of low weight loss upon the thermal treatment after exposure.

Abstract: A composition comprises a polyolefin, such as polyethylene, as a major constituent and poly(ethylene oxide) as a minor constituent. The composition exhibits an inverse phase morphology so that the poly(ethylene oxide) forms a continuous phase and the polyolefin forms a dispersed or discontinuous phase in the film. Desirably, the polyolefin and the poly(ethylene oxide) are grafted with a polar, vinyl monomer. The composition can be used in disposable personal hygiene articles.

Abstract: Modified polyvinyl acetals are prepared by saponification of 1-alkylvinyl acetate-vinyl acetate copolymers, which contain 1-alkylvinyl acetate/vinyl acetate in a weight ratio of 1/99-40/60 and subsequent acetalization the saponification products containing at least 80% units of vinyl alcohol and 1-alkyl vinyl alcohol with one or more aliphatic aldehydes with 1-6 C atoms under acid catalysis in an aqueous and/or organic medium; as well as to a method for the manufacture and the use thereof, especially in printing inks.

Abstract: Disclosed is a semicarbazide derivative represented by formula (1) or a terminal-blocked form thereof: wherein R1 represents a terminal isocyanate group-free polyisocyanate residue or a terminal isocyanate group-free triisocyanate residue; R2 represents an alkylene group, a cycloalkylene group, or an arylene group; each R3 independently represents a hydrogen atom or an alkyl group; n is zero or 1; and each of and m is independently zero or a positive integer, provided l that l and m satisfy the relationship 3≦(l+m)≦20. Also disclosed is (&dgr;) a composition comprising (&agr;) at least one member selected from the group consisting of the semicarbazide derivative and a terminal-blocked form thereof and (&bgr;) at least one member selected from the group consisting of a hydrophilic group-containing compound and a terminal-blocked form thereof.

Abstract: A graft resin having a structure of the formula (1) and having a number average molecular weight of 2,000 to 50,000, has excellent low-temperature moldability and exhibits an excellent shelf life against softening when stored at high temperatures, and an electrostatic charge developing toner containing the above graft resin as a binder exhibits excellent low-temperature fixing properties, developability and transferability without impairing the shelf life.

Abstract: The hydrous ethylene-vinyl acetate copolymer hydrolyzate (EVOH) pellets of the present invention are characterized in that they are hydrous pellets of an ethylene-vinyl acetate copolymer hydrolyzate (EVOH) (A) having an ethylene content of 5 to 60 mole percent and a degree of saponification of not less than 90 mole percent and have a water content of 5 to 60% by weight and a storage elastic modulus at 20° C. of 2×106 to 5×107 Pa. These hydrous pellets preferably contain a small amount of an alcohol (B) containing 1 to 5 carbon atoms and/or a small amount of at least one compound (C) selected from the group consisting of a boron compound (c1), acetic acid (c2), an alkaline metal acetate (c3), an alkaline earth metal acetate (c4) and a phosphoric acid compound (c5).

Abstract: The present invention concerns a fluid loss control agent for a petroleum industry (or analogous) cement slurry, comprising a surfactant and a micro-gel obtained by chemical cross-linking of a polyvinyl alcohol. The micro-gel and the surfactant are advantageously compatible with a wide range of petroleum industry cement additives and can also produce compositions which are gas tight.

Abstract: A water-soluble film, comprising 100 parts by weight of (A) a sulfonic acid group modified polyvinyl alcohol and 0.05-20 parts by weight of (B) gallic acid, salts thereof or a C.sub.1-5 alkyl ester thereof.

Abstract: A polyvinyl alcohol is provided containing structural units of the following formula (I) at a molar fraction of 0.05-0.50 and the structural units of the following formula (II) at a molar fraction of 0.0001 to 0.50; ##STR1## wherein R.sup.1, R.sup.2, R.sub.3 and X are as desribed herein, and its use in preparation of gels, particularly hydrogels, effective for use in wound dressing materials.

Abstract: Novel polyfunctional glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also find use in imparting wet adhesion properties to water-based paints and coatings. A process for preparing novel polyfunctional glyoxylated compounds is also disclosed.

Abstract: The invention provides a photosensitive resin and a photosensitive resin composition having excellent water resistance after hardening, excellent developability, and excellent patterning characteristics, and a pattern formation method making use of the composition. The invention provides saponified PVA photosensitive resin which contains structural units represented by formulas (I) and (II): ##STR1## the content of the structural units represented by formulas (I) and (II) in the resin being 0.5-10 mol % with respect to entirety of the structural units of the saponified product of PVA.

Abstract: The invention is a self-cross-linked polyvinyl butyral (PVB) binder for organic photoconductors (OPC's) used in electrophotography. The no cross-linked form of the binder is available from Monsanto Co. in the U.S.A. a Butvar.TM., and from Sekisui Chemical Co. in Japan as Slek.TM.. I discovered that the PVB may be self-cross-linked by subjecting it to a thermal cure at between about 150.degree.-300.degree. C. for about 2 hours. I think other ways of cross-linking, for example, e-beam, UV or X-ray radiation, will achieve results similar to those I obtained with heat. No cross-linker, nor cross-linkable copolymer nor catalyst is required to accomplish the cross-linking. After self-cross-linking, the PV has good mechanical durability and good anti-solvent characteristics. In addition, he self-cross-linked PVB's glass transition temperature (T.sub.g) increases from about 65.degree. C. to about 170.degree. C.

Abstract: The present invention relates to a flushable fibrous structure that is particularly useful as a disposable tissue product and as a component (e.g., topsheets) for absorbent articles such as catamenial pads, diapers, incontinent articles and the like. The invention specifically relates to a flushable fibrous structure that has an in-use wet tensile strength of at least about 100 g/in. and a disposal wet tensile strength of not more than about 30 g/in. The invention also relates to absorbent articles comprising the fibrous structures, and methods for making the structures.