Abstract: A two phase adhesive matrix for use in an electrically powered iontophoretic delivery device is provided. The adhesive matrix comprises an adhesive hydrophobic polymer phase and about 15 to 60 wt % on a dry weight basis of a hydrophilic polymer phase distributed through the hydrophobic polymer phase. The hydrophilic phase forms upon hydration an interconnecting network of aqueous pathways for passage of the agent through the adhesive. The adhesive can be used to adhere an electrode assembly of an iontophoretic delivery device to a body surface such as skin or a mucosal membrane. Alternatively, the adhesive can be used to adhere together two or more elements of an iontophoretic delivery device.

Abstract: A graft copolymer, comprising a trunk polymer comprising a vinyl chloride/vinyl alcohol copolymer containing vinyl chloride and vinyl alcohol as the essential constituent monomer units, and a branch polymer comprising an organopolysiloxane grafted onto said trunk polymer, and a coating composition comprising said graft copolymer as the main component. The coating formed from the composition is excellent in slippage, water repellency and mold release properties in addition to good characteristics derived from the vinyl chloride/vinyl alcohol resin.

Abstract: An adhesive composition suitable for use as an in-line contact adhesive for electrotransport drug delivery systems.

Abstract: A refrigerant-transport hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, the reinforcing fiber layer and the inner and outer tubes providing an integral tubular body, and inner tube including a gas-impermeable resinous layer formed of a composition containing a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid having eight to sixteen carbon atoms.

Abstract: Disclosed is a resin composition comprised of (a) 5 to 95 weight % of a saponified ethylene/vinyl acetate copolymer, (b) 95 to 5 weight % of a polyamide resin in which the content (in .mu.-equivalent/g of the polymer) of the terminal amino group in the molecule is larger than the content (in .mu.-equivalent/g of the polymer) of the terminal carboxyl group in the molecule, and (c) 0.5 to 10 weight % of a modified polyolefin formed by grafting an unsaturated carboxylic acid, or an acid anhydride or salt thereof onto a polyolefin. The resin composition can be stably shaped for a long time by extrusion.

Abstract: Corrugating adhesives and premixes containing polyvinyl alcohol reacted with ketone-aldehyde resins are provided which exhibit stable viscosities and excellent adhesive properties. The premix formulations include PVA reacted with a selected resin, preferably in the absence of starch or borax, in order to yield pourable compositions which retain a stable viscosity over extended storage periods at ambient temperature. The premixes can be added to adhesive formulations including starch, alkali and borax to give corrugating adhesives which resist premature gelation and have good wet tack and adhesive properties.

Abstract: Latent, heat-curable epoxy resin compositions containing metal carboxylate curing systems provide exceptional latency, particularly at elevated temperature, as well as facile curing, high T.sub.g and adhesive strength, and other attractive properties. The metal carboxylates comprise alkali metals and alkaline earth metals, aromatic and aliphatic metal carboxylates. The preferred curing systems comprise synergistic combinations of the metal carboxylates with cure modifiers.

Abstract: A blend of 5 to 95 percent of an ethylene vinyl alcohol copolymer and 95 to 5 percent of an amorphous polyamide having fewer than about 0.100 equivalents of carboxyl end groups per kilogram of polyamide exhibits improved oxidative and thermal stability. The blend is useful for preparing films and multiple layered structures including thermoformed structures and oriented shrink films.

Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and N-vinyllactams or N-vinylamides and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.

Abstract: Novel crosslinkable hot-melt adhesive compositions, curable by atmospheric moisture, include (i) the prepolymerizate of an hydroxylated ethylene/vinyl acetate copolymer with a stoichiometric excess of a polyisocyanate, e.g., a diisocyanate, such prepolymerizate containing an effective crosslinkable amount of free isocyanate functional groups, and, optionally, (ii) an adhesive tackifying resin.

Abstract: A sealing composition for a container closure comprises a polymeric matrix material and its oxygen permeability is reduced by incorporating ethylene vinyl alcohol polymer into the composition. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure.

Abstract: The saponified product of an ethylene-vinyl acetate copolymer is mixed with an oxidation catalyst to provide a resin composition having improved oxygen barrier quality. For better formability, the composition may be mixed or laminated with another thermoplastic resin such as a polyester.

Abstract: This invention provides a halogen-containing thermoplastic resin composition comprising a halogen-containing thermoplastic resin (A), a melt-moldable vinyl alcohol polymer (B) and a polyesteramide (C), the proportions of (B) and (C) being 0.1 to 100 parts by weight and 0.1 to 10 parts by weight, respectively, based on 100 parts by weight of (A). The component (C) improves the compatibility between the components (A) and (B).

Abstract: A cationic polyvinyl alcohol binder additive is prepared suitable for addition in the wet-end of a paper making process by reacting a blocked glyoxal resin, a cationic water-soluble aldehyde reactive polymer and a polyvinyl alcohol polymer.

Abstract: This invention provides a halogen-containing thermoplastic resin composition comprising a halogen-containing thermoplastic resin (A) consisting of 100 to 0.1 weight percent of a thermoplastic polyurethane-vinyl chloride graft polymer (a1) with a polyurethane content of 10 to 90 weight percent which is produced by polymerizing vinyl chloride in the presence of a thermoplastic polyurethane and 0 to 99.9 weight percent of another halogen-containing polymer (a2) and a melt-moldable vinyl alcohol polymer (B), the proportion of melt-moldable vinyl alcohol polymer (B) being in the range of 0.1 to 100 parts by weight to 100 parts by weight of halogen-containing thermoplastic resin (A).

Abstract: An epoxy resin powder coating composition comprises 100 parts by weight of bisphenol A mixed epoxy resin having number average molecular weight from 1,700 to 4,500 comprising a bisphenol A epoxy resin (A) having a number average molecular weight from 2,500 to 8,000 and a bisphenol A epoxy resin (B) having a number average molecular weight from 300 to 1,000 (C) a novolak epoxy resin 5 to 20 parts by weight of polyvinyl butyral resin or polyviny formal resin, a hardener, and a filler.

Abstract: A blend of 5 to 95 percent of an ethylene vinyl alcohol copolymer and 95 to 5 percent of an amorphous polyamide having fewer than about 0.100 equivalents of carboxyl end groups per kilogram of polyamide exhibits improved oxidative and thermal stability. The blend is useful for preparing films and multiple layered structures including thermoformed structures and oriented shrink films.

Abstract: A curable polydiorganosiloxane is reinforced by mixing with a modified polyvinylalcohol (PVA). Fully hydrolyzed PVA is modified by dissolving or swelling in solvent, then adding a silylating agent of the formula R".sub.b (R'.sub.2 SiO).sub.n SiR.sub.a X.sub.4-a where R is a group capable of undergoing hydrolysis to form a siloxane bond with the curable polydiorganosiloxane, R' is a monovalent alkyl or aryl radical having from 1 to 6 carbon atoms, optionally halogen substituted, and compatible with the curable polydiorganosiloxane, R" is either R or R', X is a radical reactive with the hydroxyl on the PVA, a and b are integers of 0 to 3 inclusive, the sum of a plus b is from 1 to 3 inclusive, and n is from 0 to 35. This modified PVA is then mixed with the curable polydiorganosiloxane. The polydiorganosiloxane is then cured and the solvent is extracted to yield a cured polydiorganosiloxane reinforced with polyvinylalcohol.

Abstract: A blenad consisting ethylene vinyl alcohol copolymer and a polyamide blend of an amorphous polyamide and a semicrystalline polyamide which is miscible with the amorphous polyamide but substantially immiscible with the vinyl alcohol copolymer exhibits good mechanical and barrier properties as well as good resistance to thermal degradation.

Abstract: A curable polydiorganosiloxane is reinforced by mixing with a solution of polyvinylalcohol (PVA) or a modified PVA. The polydiorganosiloxane is then cured and the solvent is extracted to yield a cured polydiorganosiloxane reinforced with PVA.

Abstract: A fine powder is obtained by first dissolving polyvinylalcohol and tetraalkoxysilicate in a common solvent to obtain a reaction product, then spraying a fine mist of a solution of the reaction product into a coagulating bath of a solvent which is miscible with the common solvent, but a poor solvent for the reaction product. After drying, the fine particles obtained are useful as filler in polydiorganosiloxane compositions.

Abstract: A hydrophilic surface treatment chemicals comprising, on a solid basis,(a) 1-10 parts by weight of at least partially saponified polyvinyl acetate having a saponification degree of 45 or more and a polymerization degree of 100-600,(b) 0.3-15 parts by weight of water-soluble nylon, and(c) 0.1-5 parts by weight of a water-soluble amino resin,a weight ratio of the component (b) to the total of the components (a) and (c), (b)/[(a)+(c)], being in the range of 1-1/4, and a weight ratio of the component (a) to the component (c), (a)/(c), being in the range of 1/0.05-1/0.5. The hydrophilic surface treatment bath is prepared by properly diluting the chemicals for surface-treating aluminum members.

Abstract: Polymeric blends of (a) linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with (b) reaction product of carbon monoxide and ethylenically unsaturated hydrocarbon with other polymeric material selected from polymeric polyols and diene rubbers are obtained when the linear alternating polymer is produced in the presence of the other polymeric material.

Abstract: A melt blend of a polyacetal, an ethylene-vinyl alcohol copolymer, and a fibrillatable fluoropolymer resin. The blends are blow moldable.

Abstract: Provided are multilayered structures comprising at least 2 layers of a layer which comprises a resin composition comprising:(A) a thermoplastic resin,(B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol % and a saponification degree of vinyl acetate component of at least 96%, and(C) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 68 to 98 mol % and a saponification degree of vinyl acetate component of at least 20%, anda layer which comprises a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol % and a saponification degree of vinyl acetate component of at least 96%.These multilayered structures have excellent gas barrier properties and resistance to intralayer delamination, and the resin composition layer thereof has neat appearance.

Abstract: A thermosetting powder composition is disclosed which comprises:a functional thermoplastic resin capable of reacting with a cyanate group and a molecular weight of at least 10,000;a polyfunctional cyanate compound; anda viscosity controlling agent which is a compound having at least one functional group capable of reacting with the functional thermoplastic resin and/or the polyfunctional cyanate compound and a molecular weight of less than 10,000. The composition is useful as a powder coating composition or a raw material for the formation of molded articles.

Abstract: Hybrid curable compositions comprising components curable by condensation, and components curable by free-radical initiated polymerization, cure being catalyzed by a metal sulfonate. The components curable by condensation comprise amino resins and co-reactants. The components curable by free radical initiated polymerization comprise acryloyl compounds and allylic or vinylenearylenemethylidyne compounds.

Abstract: A water retention material with water-absorbency which comprises finely divided particles of water-absorbent resin having a water absorption capacity of 2 to 50-fold and a particle size of 100.mu. or finer and a hydrophobic material such as a thermoplastic resin, elastomer, sealant, paint or adhesive.

Abstract: Ethylene vinyl alcohol copolymer is blended with polyetheramide block copolymer to form a novel composition of matter. The blended composition can be extruded and/or coextruded to make packaging films. In the most preferred embodiments, the blend is contained as one layer in a film comprising a multiplicity of layers, and at least the blend layer is molecularly oriented. Methods of making the films are also disclosed.

Abstract: An adhesive composition for metal-clad laminates which comprises:(a) 100 parts by weight of a polyvinylbutyral having an average polymerization degree of from 500 to 3,000 and a degree of butyralization of at least 60 mol %,(b) from 10 to 200 parts by weight of an epoxidized polybutadiene per 100 parts by weight of the polyvinylbutyral, the epoxidized polybutadiene having a number average molecular weight of from 1,000 to 10,000 and an epoxy equivalent weight of from 200 to 2,000, and(c) from 1 to 10 parts by weight of a hardener for the epoxidized polybutadiene per 100 parts by weight of the epoxidized polybutadiene.

Abstract: A thermoplastic composition containing a first phase of a polar thermoplastic polymer, a second phase of non-polar polyolefin incompatible therewith, and a vinylpyrrolidone grafted polyolefin at least at an interface to compatibilize the different phases. A mixed phase monolayer of the composition containing ethylene-vinyl alcohol copolymer blended with vinylpyrrolidone grafted polypropylene as the first phase, and polypropylene as the second phase, has good oxygen and moisture barrier properties for food packaging applications. Also disclosed is a tieless multilayer laminate of the composition having an interlayer of a blend of ethylene-vinyl alcohol copolymer and vinylpyrrolidone grafted polypropylene and outer layers of polypropylene. The laminate has good oxygen and moisture barrier properties for food packaging applications.

Abstract: Polymers with polyvinyl acetal groups, which contain acetalized polyvinyl alcohol groups on polyurethane grafting substrates and which are prepared from graft polymers, containing vinyl alcohol groups on polyurethane grafting substrates, by reaction with aldehydes according to known methods. The aldehydes used can be any known aldehydes capable of acetalization reactions.The polyurethane grafting substrates contain at least 2 urethane groups in the molecule and units from diisocyanates and diols, and polymer radicals of units of vinyl carboxylates having 3 to 20 carbon atoms and/or hydrolysis products thereof and, if appropriate, further monomer units are grafted onto the polyurethane grafting subtrates. The proportion of vinyl alcohol units in the hydrolyzed or partially hydrolyzed graft polymers before the acetalization is >10% by weight.In the acetalized polymer, the content of residual unacetalized vinyl alcohol units is >7.

Abstract: Hybrid curable compositions comprising components curable by condensation and components curable by the free radical initiated polymerization. The components curable by condensation reaction comprise amino resins and co-reactants, the condensation reaction being optionally catalyzed by acid catalysts. The components curable by free radical initiated polymerization comprise acryloyl compounds.

Abstract: Polymers with polyvinyl acetal groups, which contain acetalized polyvinyl alcohol groups on polyurethane grafting substrates and which are prepared from graft polymers, containing vinyl alcohol groups on polyurethane grafting substrates, by reaction with aldehydes according to known methods. The aldehydes used can be any known aldehydes capable of acetalization reactions.The polyurethane grafting substrates contain at least 2 urethane groups in the molecule and units from diisocyanates and diols, and polymer radicals of units of vinyl carboxylates having 3 to 20 carbon atoms and/or hydrolysis products thereof and, if appropriate, further monomer units are grafted onto the polyurethane grafting substrates. The proportion of vinyl alcohol units in the hydrolyzed or partially hydrolyzed graft polymers before the acetalization is >10% by weight.In the acetalized polymer, the content of residual unacetalized vinyl alcohol units is >7.

Abstract: A polymer blend comprises a skin polymer, an ethylene-vinyl alcohol copolymer and a poly-2-oxazoline. The polymer blend possesses good gas barrier properties and excellent mechanical strength. A particularly preferred blend comprises an improved reclaim layer of a six-layer composite sheet suitable for thermoforming into a food package.

Abstract: A sheet formed of a polyblend comprising, on a weight basis, a) 30 to 90% polyvinyl butyral containing about 11 to 30% hydroxyl groups and b) 70 to 10% thermoplastic polyurethane which is the reaction product of:(i) polyether polyol or a mixture of polyether polyol and polyester polyol; and(ii) aliphatic diisocyanate, aromatic diisocyanate or a mixture of aliphatic and aromatic diisocyanates;the combined percentages of a) plus b) in the polyblend always equaling 100%; such sheet at 0.76 mm thickness having no greater than 2% haze.

Abstract: Compositions comprising polyamides, polyolefins and ethylene vinyl alcohol copolymers useful as compatibilizers, related processes and articles made therefrom. A composition comprising from 50 to 99.4 percent by weight of a polyolefin, from 0.5 to 50 percent by weight of a polyamide, from 0.1 to 10 percent by weight of an ethylene vinyl alcohol copolymer comprising from 50 to 95 mole percent ethylene groups and from 5 to 50 mole percent vinyl alcohol groups and less than 5.0 mole percent and preferably less than 2.0 mole percent unhydrolyzed vinyl acetate groups.

Abstract: A resin composition comprising(A) 100 parts by weight of a hydrolyzed eithylene-vinyl acetate copolymer,(B) 1 to 100 parts by weight of a polyester resin and(C) 0.1 to 50 parts by weight of a polyester-amide resin The composition is excellent in impact strength and flex crack resistance.

Abstract: A stain resistant composition for fibers having polyamide linkages prepared by polymerizing an .alpha.-substituted acrylic acid or ester in the presence of a sulfonated aromatic formaldehyde condensation polymer, and methods for making and applying the composition.

Abstract: An oxygen barrier blend for use in containers requiring good oxygen barrier properties which comprises more than 70% of an ethylene vinyl alcohol copolymer and the balance an amorphous nylon having no melting point. Such a blend is used in a laminate structure which can be thermoformed into such oxygen barrier containers.

Abstract: Blends of a major portion of ethylene vinyl alcohol copolymer (EVOH) and a minor portion of an amorphous polyamide and preferably also a semicrystalline nylon are disclosed. These blends may be formed into films or multilayer structures, which can be thermoformed into containers or other articles. The presence of the minor portion of amorphous polyamide permits thermoforming of the EVOH at lower temperatures without the formation of defects.

Abstract: The present invention relates to a light-sensitive resin composition that has resistance to heat and chemicals, is particularly adapted for use in the formation of a protective film for chemical plating and which is also improved in resistance to the heat of soldering. This light-sensitive resin composition contains (a) a polyurethane (meth)acrylate, (aa) a bisphenol type epoxy (meth)acrylate, (b) a linear high-molecular weight compound, and (c) a polymerization initiator which generates free radicals upon exposure to light. This resin composition is applicable to the manufacture of printed circuit boards by the additive process.

Abstract: A hydrophilic polymer blend is disclosed which comprises a first polymer component which is an organic solvent-soluble, thermoplastic polyvinylbutyral (PVB) and a second polymer component which is a hydrophilic poly(N-Vinyl lactam), e.g., a water soluble polyvinylpyrrolidone. The blend demonstrates slipperiness in aqueous environments and, among other applications, is useful in low-friction coatings for a wide variety of substrates. A method for providing the coatings is also described.

Abstract: A blend consisting essentially of a major portion of an amorphous polyamide and a minor portion of an ethylene vinyl alcohol copolymer exhibits gas barrier properties which are less dependent on humidity than are those of either of the component polymers. Films and laminated structures which incorporate the material of these blends are suitable for use as packaging materials.

Abstract: A composition for closing pores in a formation following a steam-flooding enhanced oil recovery process. The composition comprises an aqueous temperature activated gellable mixture. This mixture is comprised of water, water dispersible polymers, phenolic compounds, and aldehyde producing compounds. Polymers which can be utilized herein include polyvinyl alcohol, polyacrylamide and poly(acrylamide-coacrylamido-2-methylpropane sulfonate). Phenol is the phenolic compound of choice. At a formation temperature greater than 300.degree. F., trioxane, the preferred aldehyde producing compound decomposes to yield formaldehyde which reacts with phenol to form phenolic resin in situ. The resin gels the polymer and forms a solid gel in a heated zone of the formation.

Abstract: Compositions comprising polyamides, polyolefins and ethylene vinyl alcohol copolymers useful as compatabilizers, related processes and articles made therefrom. A composition comprising from 50 to 99.4 percent by weight of a polyolefin, from 0.5 to 50 percent by weight of polyamide, from 0.1 to 10 percent by weight of an ethylene vinyl alcohol copolymer comprising from 50 to 95 mole percent ethylene groups and from 5 to 59 mole percent vinyl alcohol groups and less than 5.0 mole percent and preferably less than 2.0 mole percent unhydrolyzed vinyl acetate groups.

Abstract: A photosensitive resin composition comprising a photosensitive saponified poly(vinyl acetate) derivative containing in the backbone thereof at least one of a first group of photosensitive units which are represented by the general formula (I) ##STR1## wherein represents a vinyl alcohol residue in the backbone of the saponified poly(vinyl acetate) derivative; Y represents a member selected from the group consisting of the following general formulae (II) and (III) ##STR2## m denotes an integer of 1-6; n denotes 0 or 1; R.sub.1 represents a member selected from a hydrogen atom, an unsubstituted alkyl and an unsubstituted aralkyl group, a hydroxyl group, a carbamoyl group, an ether bond and an unsaturated bond; R.sub.2 represents a member selected from a hydrogen atom and a lower alkyl group; and X.sup.

Abstract: Both waterborne and solvent enamels can be sprayed in a common paint spray booth and be detackified by a composition comprising a blend of a melamine-formaldehyde polymer, polyvinyl alcohol and a styrene acrylate copolymer. The invention also contemplates the use of these compositions in detackifying paint in paint spray booths.

Abstract: An article, suitable for use as a body implant, is made from a novel composition comprising a multiple phase polymer composition comprising:(a) a first phase which comprises a substantially non-hydrophilic polymeric component; and(b) a second phase which comprises a hydrophilic polymeric component;said composition (i) being capable of absorbing water to an extent that it softens with a softening ratio of at least about 2:1 and/or swells with a swelling ratio of at least about 1.3:1; and (ii) when substantially completely hydrated has an energy to break of at least about 700 N-cm/cm.sup.3 and a 2.5% Secant modulus of less than about 7,000 N/cm.sup.2.

Abstract: A composition comprising:(a) at least one linear alternating copolymer of carbon monoxide and an ethylenically unsaturated hydrocarbon; and(b) a vinyl alcohol polymer, as well as articles prepared therefrom and packaging materials prepared therefrom.