Abstract: Electrostatic spray paint formulations of alkyds, acrylics, nitrocellulose or polyurethanes having defined viscosity values and film forming solids content.

Abstract: A method for calendering a suture includes passing the suture lengthwise between two pairs of calendering rollers each pair being oriented orthogonally to the other pair. The suture may be coated and/or filled by passing it through the contacting region of a suture filling applicator to which filling agent is supplied by a metering pump. The filling process may be computer controlled.

Abstract: A process for the production of a multi-layer paint coating in which base paints are employed which contain 5 to 20% by weight of crosslinked polymer microparticles, 2 to 15% by weight of a cellulose ester and 5 to 20% by weight of an epoxidized fatty acid ester, the weight percentages relating to the total content of nonvolatile constituents, excluding pigments and inorganic fillers, and the cellulose ester being so selected that a solution of 15 parts by weight of the cellulose ester in 85 parts by weight of a 9:1 mixture of acetone and ethanol at 23.degree. C. has a viscosity of 200 to 600 mPa.s.

Abstract: A process is described for the formation of an undercoat which is in turn useful in forming a CRT metal back layer. According to the process, a pretreatment composition is coated on a glass panel having a fluorescent layer overlaid thereon, so that a water film is formed. The pretreatment composition is composed of 2-20 wt. % of an alkyl monoalcohol having a C.sub.1-3 alkyl group, 0.05-1 wt. % of a water-soluble, high molecular compound and 79-97.95 wt. % of water. An undercoating composition is then coated on the water film by a wet-on-wet coating method, whereby a coating layer is formed. The undercoating composition is composed of 1-7 parts by weight of an acrylic resin, which has been obtained by polymerizing 90-100 wt. % of an alkyl methacrylate having a C.sub.1-4 alkyl group other than tertbutyl methacrylate and 0-10 wt. % of an ethylenically unsaturated monomer copolymerizable therewith, and 99-93 parts by weight of a solvent containing at least 80 wt. % of toluene.

Abstract: An auxiliary electrode for improving the consumption of oxygen in a gas-tight, sealed alkaline secondary cell is comprised of a synthetic nonwoven fabric and a film rolled onto the fabric. The film is a PTFE-bound activated carbon, and the side of the nonwoven fabric receiving the film is first impregnated with an aqueous cellulose ether mixture to develop a three layer structure including a highly porous, hydrophobic layer made of the nonwoven material, left in its original state and facing the electrolyte or a gas supply, a hydrophilic impregnated layer, and a catalytically active hydrophobic consumption layer electrically connected with the cell's negative electrode and constituting the preferred location for oxygen reduction, at the resulting hydrophobic/hydrophilic transition layer.

Abstract: The present invention relates to methods to protect curing cement or concrete from excess evaporative water loss and/or from rain, excess heat loss, or excess heat gain. More particularly the method relates to coating curing cement or concrete with a layer (or layers) of a fibrous mass composed of ground cellulose, water, a viscosity enhancing polymer, a hygroscopic swelling agent and, optionally, additives selected on the basis of the properties desired (e.g., rain resistance, heat absorption from the sun, heat reflectance, or heat insulation). The invention also relates to compositions comprising a layer of cement or concrete and a layer (or layers) of such a fibrous mass.

Abstract: In a laminate material or a laminate workpiece with a functional layer affixed to one surface of a solid backing layer, the functional layer consisting of components which are not soluble in one another, thus normally forming a heterogeneous structure, a finely dispersed distribution of the undissolved components in a matrix of the functional layer is created, due to the fact that the components forming the functional layer are affixed to the backing layer as a fine powder material in the form of a powder mixture or agglomerated powder or predispersed powder formed through air plasma spraying. Thereby the backing layer itself contains a partial layer to be coated having a heterogeneous structure or a crystalline structure, for instance a lead bronze layer or a lead tin bronze layer. This partial layer is created in a surface region by the action of the plasma flame in a strictly defined zone down to a certain depth, for instance 20 to 200 .mu.

Abstract: A process for facilitating the removal of undesired contamination from a surface, comprising the steps:(a) applying a solution containing a polysaccharide and a solvent therefor onto said surface before it is subjected to contamination, said polysaccharide being capable of forming a redissolvable or swelling solid film upon drying;(b) allowing the applied solution to dry to form a solid film on said surface;(c) treating the coated surface with a liquid capable of redissolving the film or providing for swelling thereof; and(d) removing the undesired contamination by removing the dissolved or swelled surface layer of the film.

Abstract: A plastic article, especially of polypropylene or polyethylene, can be rendered resistant to diffusion of motor fuel vapors or the like and/or prepared for surface-coating by applying a film of a naturally-occurring, enzymatically-functionalized cellulose derivative having a functional phosphate, sulfate, carbonate or amino group.

Abstract: A rechargeable alkaline storage cell comprises, as main components thereof, a negative electrode, a positive electrode and an electrolyte. The negative electrode is formed of sintered type cadmium electrode including one of a polysaccharide and its derivative having a polymerization degree of more than 320.

Abstract: Disclosed is a process for promoting the rapid curing of a two component polyurethane lacquer that has been applied to a substrate. A cure coat composition consisting of a hydroxy functional polymer such as nitrocellulose, a solvent for the polymer, and a urethane catalyst such as an organic tin compound, is applied over the polyurethane lacquer while it is in a wet or semi-dry state.

Abstract: This invention relates to a composition and method for producing a surface layer with a high specific surface on iron, aluminum, zinc, and on technical alloys of these metals. The composition provides an adhesive layer that may be subsequently used to securely bind other materials, and organic materials in particular, to the surface of the metal or alloy. The composition may be applied by spraying under pressure, by dipping, or as a paste at ambient temperatures. The composition is predominantly amorphous, and provides a uniform, stable, and economical method of priming metals for the reception of a final outer coating.

Abstract: A photographic paper support made of a water-repellent sized base paper coated on both sides with a waterproof synthetic resin, and wherein the paper contains a combination of sizing substances including a water-repellent sizing agent, a cationic strengthening retention and binding agent and a sulfate or phosphate ester of a polysaccharide. The water-repellent sizing agent relative to the paper fiber content is about 0.2 to 2% by weight, the cationic strengthening and binding agent is greater in amount than about 1.5 of the water-repellent sizing agent, and the amount of the esterified polysaccharide is about 0.1 to 10% by weight relative to the fiber content.

Abstract: This invention relates to an improved process to produce composite polymeric materials and an article having an adherent surface layer. More specifically, the invention describes a process for producing a modifying adherent layer on a passive polymeric material, the layer comprising a fluorinated ester substituted alkoxy cellulose having, on the average, between about 1.0 to 2.99 of the three reactive hydroxyl groups of each glucose unit present as alkoxy groups, and the remainder of between about 0.01 to 2.00 of the reactive hydroxyl groups of each glucose unit present as a fluoroester group of the formula: ##STR1## wherein R.sub.f is branched perfluoroalkyl comprising 3 to 20 carbon atoms; or --(CF.sub.2).sub.n CF.sub.

Abstract: An aluminum alloy, a lithographic printing plate support, a lithographic printing plate using the aluminum alloy are disclosed. The aluminum alloy is comprised of aluminum containing 0.20 to 1.0% Fe and 0.005 to 0.1% of elements selected from the group consisting of Sn, In, Ga and Zn. The support composed by the aluminum alloy can be chemically etched with an acid and/or an alkali solution and after undergoing etching the surface of the support is uniformly etched. The uniformly etched surface may be provided with a subbing layer or an anode oxidation film. The support is coated with a light-sensitive layer and utilized as a lithographic printing plate.

Abstract: A process for color coding of a sintered powder metal part is disclosed. The process comprises contacting said metal part with a color formulation comprising: from about 1 to 10 parts of a colorant, from about 1 to 5 parts of nitrocellulose, up to about 45 parts of an alkyl acetate, and the remainder an alcohol and continuing said contact until a color coating is deposited on said metal part.

Abstract: The invention concerns a process for producing compact, cellulose acetobutyrate based lacquer layers with a high degree of dullness for record carriers coated with a metallic or metalliferous layer, wherein high-molecular polysaccharides, having side chains and containing lignin, are admixed with the basic lacquer compound as a filler with a particle size distribution of less than 10 .mu.m and a molecular weight of about 10.sup.6.

Abstract: Low viscosity, aqueous impregnating resin solution with improved stability containing 30-70% by weight of solid resin which comprises:(A) 80-98% by weight of a melamine-formaldehyde precondensate and(B) 2-20% by weight of a water soluble copolymer.

Abstract: Sheet-like material, such as wallpaper, posters or labels, can be stripped dry from surfaces to which they have been bonded after adhesive layers (applied in an aqueous medium) have dried. Adhesives which contain film-forming, water-soluble or water-swellable polymers are used. Separate layers containing two different adhesive polymers, particularly polysaccharide derivatives, are provided between the sheet-like material and the surface to which it is to be bonded, one of the two layers containing at least one non-ionic polymer and the other containing at least one ionic polymer. The invention includes the use of these adhesives (containing different film-forming, water-soluble or water-swellable polymers) in preparing dry-strippable sheet-like material and sheet-like material, such as wallpaper, posters or labels, having adhesive layers which can be reactivated by moistening with water and which comprise these adhesives.

Abstract: Disclosed is a packaging material, comprising a fibrous base web wherein at least a part of the fibers forming said base web include at least a partial coating of a mixture of chemical substances which comprise a predominant proportion of a chemical binder based on a synthetic water-soluble heat-curable cationic resin precondensate and of a minor proportion of at least one coloring chemical substance, the proportions being relative to the total weight of the mixture of substances. Also disclosed is a method of manufacturing this packaging material and a sausage casing made therefrom.

Abstract: A process for the preparation of lignocellulosic composite using urea-formaldehyde adhesive is described characterized by treating the lignocellulosic constituents with ammonium-base lignosulfonate prior to pressing to decrease the emission of formaldehyde.

Abstract: Solid lignocellulosic material is bonded together by heating and pressing at a natural wood, pH by reacting sugars, starches or both in the presence of a catalyst capable of catalyzing transformation of the sugars and starches into a solid, insoluble in water, and an alkaline buffering agent if needed, for example to make waterproof plywood or composite products from particulate wood without hydrolytic degradation of the wood.

Abstract: A process for eliminating cracking in a titanium dioxide-hydroxyethylcellulose layer by simultaneously coating thereover a hydrophilic colloid layer such as gelatin.

Abstract: Silver diffusion transfer image-receiving elements are formed by hydrolyzing a solution of a hydrolyzable cellulose ester, coating a support with a layer of said hydrolyzed cellulose ester and disposing silver precipitating nuclei therein.

Abstract: Process for improving the water-absorbing capacity and absorptivity of fibrous materials consisting of, or containing, synthetic fibers or filaments, which comprises applying modified, highly absorbing cellulose ethers onto the fibrous materials and fixing these cellulose ethers on the fibrous material with the aid of finishing agents, resins or binders.

Abstract: Solid lignocellulosic material is bonded together by heating and pressing with a bonding composition comprising at least one carbohydrate and an acid capable of catalysing hydrolysis of the carbohydrate, for example to make plywood or particle board.

Abstract: An improved plasticized regenerated cellulose film, and particularly a plasticized regenerated cellulose film having a moistureproofing, solvent-sealable coating in which plasticizer migration into the coating is at least minimized, and a process for making such film.

Abstract: A cellulosic substrate is rendered fire resistant through application thereto of an alcohol deactivated solution of chlorosulfonic acid and digested plant material.

Abstract: A composite dry process hardboard includes a hardboard panel consisting of pressed defibrated and refined wood chips, plus a surface layer of paper cemented to the hardboard by a cured resin made from phenolic resin mixed with water and ethylene glycol. If desired, an embossed pattern may be incorporated into pressing the paper overlay. In the subject process, first a mass of defibrated wood chips is mixed with a binding agent, the mass is then formed into a mat which is coated with a mixture of phenolic resin and polyhydric compound such as a polyhydric alcohol having a boiling point higher than water. Then, a dry sheet of paper is laid on the mat and the composite structure is then cured by the application of heat and pressure.

Abstract: A method of limiting carbon contamination from graphite ware used in induction melting of uranium alloys is provided comprising coating the graphite surface with a suspension of Y.sub.2 O.sub.3 particles in water containing about 1.5 to 4% by weight sodium carboxymethylcellulose.

Abstract: Hydrophilic polymers, i.e., hydrophilic cellulose esters, hydrophilic cellulose ethers, hydrophilic polyurethanes, hydrophilic vinyl lower alkyl ether polymers, vinyl alcohol group containing polymers, partially hydrolized polyacrylonitrite, ethylene-maleic anhydride copolymer, stryene-maleic anhydride copolymer, proteins, high molecular weight polyalkylene oxides or phenoxy resins, having encapsulated therein either or both anti-fouling agents or pigments is applied as a coating to underwater portions of a marine structure so as to reduce the drag of said structure.

Abstract: A carbohydrate bonded support for use in a chromatographic system, and a method for preparation of such a support is disclosed herein. An inorganic support has a thin layer of carbohydrate or carbohydrate derivative covalently linked to the surface so that the thus formed support has excellent mechanical stability as well as the ability to avoid adsorbing or denaturing sensitive biological compounds, the carbohydrate bonded support thus combining the advantages of known supports without also incorporating the disadvantages thereof.

Abstract: The present invention relates a process for crosslinking hydrophilic colloids, especially gelatine. The colloid is crosslinked with a water-soluble organic crosslinking agent which is allowed to act in a system consisting of at least two colloid layers. At least one layer contains the crosslinking agent and at least one layer which is free from crosslinking agents contains an aprotic solvent.

Abstract: coating compositions comprising polyalkyleneimine and cellulose acetate propionate in solution, and related process and product, are disclosed. Such compositions are particularly useful as primer coatings for substrates of regenerated cellulose, paper and paperboard where cellulose ester top coatings are used. Use of such compositions as primer coatings improves adhesion of the top coating to the substrate, particularly where the coated substrate is heat-sealed, for example, in packaging applications. Also, the coating composition provides increased resistance to blocking, which is especially important where the substrate is sheet material wound in a roll.