Abstract: Adhesive composition comprising starch, dextrine and a polyacrylamide. The composition is carried by water; but, when the composition is applied to a substrate, the water is evaporated to produce a water activatable adhesive. Thus, the composition is suitable for application to a paper backing to form an adhesive tape.Method of preparing the adhesive from a dry polyacrylamide starting material includes the steps of first dissolving the dextrine and dry polyacrylamide in water and allowing the dextrine and polyacrylamide to mix. The starch is then added to that mixture. Preferably, the dextrine and polyacrylamide are mixed for at least a half-hour before the starch is added. To prevent the particles of dextrine and polyacrylamide from agglomerating together, it has been found advantageous to mix the dextrine and polyacrylamide in small batches. This step, however, is not critical.

Abstract: Covers a process for producing an improved substantially non-birefringent granular starch product comprising: heating an aqueous slurry of a granular birefringent starch to substantially eliminate the birefringence of the starch and to slightly swell the starch while retaining the granule structure; separating and dehydrating the partially swollen non-birefringent starch granules; and recovering the substantially non-birefringent granular starch product. Also covers the use of this product as a thickener to increase the viscosity and to improve the coating characteristics of latex compositions and said latex compositions.

Abstract: A water-dispersible polycondensation polyester resin having moieties of at least one polycarboxylic acid and at least one polyvalent alcohol having a terminal hydroxyl group, said polyester having a molecular weight between 300 and 3,000, a softening point between 30.degree. and 60.degree. C, said polyester additionally containing an amount of 1 to 5 mole percent based upon the moieties of polycarboxylic acid or polyvalent alcohol; moieties of an alkali metal-sulfo group containing polycarboxylic acid or polyvalent alcohol; aqueous dispersions of such water-dispersible polyester resin and the use of such water dispersions as baked upon lacquer compositions.

Abstract: An alloyed cellulosic fiber containing an alkali metal salt or ammonium salt of a copolymer or terpolymer of acrylic acid and/or methacrylic acid and an aliphatic ester of at least one of the acids is prepared by a process wherein the copolymer or terpolymer is mixed with a viscose solution and the mixture is extruded through a spinneret into a conventional spin bath and processed into staple fibers which are adapted to be used in absorbent articles and the like. The alloyed cellulosic fiber of the invention has increased fluid absorbency characteristics over the fibers of the same cellulose composition without the alloying material. An unsaturated aliphatic dicarboxylic acid such as maleic acid or anhydride may be incorporated in the copolymer or terpolymer. Also, a copolymer or terpolymer of acrylic acid or methacrylic acid and an aliphatic ester of acrylic acid or methacrylic acid may contain radicals obtained from acryloamidoalkane sulfonic acid or an unsaturated phosphorous acid.

Abstract: This invention discloses latex compositions wherein a specially treated, substantially non-birefringent, cold water swelling, granular starch product is used as a thickener and for partial replacement for the polymer in the latex.

Abstract: A foamable polymer composition comprising a resinous polymer and a mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water obtained as a result of the nitric acid oxidation of a carbonaceous material, such as coal.

Abstract: A flame-retardant filament-forming copolymer of at least 75 mol % of ethylene-2,6-naphthalene dicarboxylate units and at least 3 mol % up to 25 mol % of randomly copolymerized esters units having bromine or chlorine chemically united with either the diacid residue or both the diacid residue and the diol residue of said ester units. In addition, fibers of the above flame-retardant copolyester resin and flame-retardant cellulosic fibers are blended together to provide flame-retardant yarns and fabrics of excellent physical properties.

Abstract: To manufacture highly disperse solids of crosslinked urea-formaldehyde polycondensation products consisting of primary particles with an average diameter not greater than 1 micron, an aqueous solution consisting essentially of water and a precondensate of urea and formaldehyde is converted into a crosslinked gel by the addition of sulphamic acid or a water-soluble ammonium hydrogen sulphate, in the course of which the molar ratio of formaldehyde:urea should be greater than 1.2 and not greater than 2.0 not later than at the time of the formation of the gel. The resulting gel is comminuted, dried and disintegrated. The powders are suitable for use as pigments, carriers and absorbents.

Abstract: Aqueous solutions of R zirconium carbonate in which R is selected from ammonium and potassium have a carbonate: zirconia molar ratio not greater than about 2 are used to impart thixotropic properties to aqueous dispersions of polymers and copolymers containing a water-soluble organic colloid containing a hydroxy group, such as emulsion paint. The solutions may be prepared by reacting zirconium basic carbonate with ammonium or potassium carbonate solution and have a good storage stability, especially at high concentrations.

Abstract: Thermoplastically processible moulding compounds consisting essentially of(1) at least one cellulose ester of an aliphatic carboxylic acid(2) an incompatible ethylene/vinyl ester copolymer containing 30 to 75% by weight of vinyl esters and(3) optionally, a compatible ethylene/vinyl ester copolymer containing 75.1 to 98% by weight of vinyl ester.

Abstract: A dextran derivative gel for use in electrophoretic separation processes is disclosed, which gel comprises a polymerizate obtained by the free-radical homopolymerization of a dextran derivative containing vinylic groups of the formula ##STR1## wherein A is --CH.sub.2 -- or --O-- and R is a hydrogen atom, a methyl group, a trifluoromethyl group, a fluorine, chlorine or bromine atom or a cyano group, or free-radical copolymerization of such a vinylic derivative of dextran with a low-molecular weight monovinyl compound.

Abstract: A dextran derivative gel in particle form for use in the separation of substances according to their molecular size and/or electrical charge by means of gel-chromatographic and/or ion exchange techniques is disclosed which gel comprises a copolymerizate obtained by the free-radical copolymerization of a dextran derivative containing vinyl and/or substituted vinyl groups with (a) a divinyl compound of the formula ##STR1## wherein R' and R" are equal or different and each represent hydrogen or methyl and X is ##STR2## --SO.sub.2 -- or the group ##STR3## wherein n is an integer from 1 to 6, inclusive, and optionally (b) a low-molecular weight monovinyl compound.

Abstract: Improved polyvinyl alcohol modified starch-based corrugating adhesive is provided by employing a fine particle size, low cold water solubles containing polyvinyl alcohol that is soluble in warm water, in combination with borax, alkali and water. Corrugated board with lower adhesive add-on and higher line speeds can be produced by the use of the improved polyvinyl alcohol modified starch adhesive. The resulting board has decreased warpage as a result of the lower add-on.

Abstract: The doughy bone cement mixture is formed by mixing a powder-form polymer, such as polymethylmethacrylate, with a polymerizing liquid monomer, such as a liquid monomeric methylmethacrylate, to form a water-insoluble composition and admixing this composition with a biologically-compatible high-viscosity aqueous gel to form a dispersion of the composition with the gel. The gel is soluble in water as well as in body fluids so as to dissolve out after implanting of an implant or joint end in a bone. This allows the remaining component of the cement to become porous and, thus, allows for tissue invasion over a course of time to further anchor the implant or joint end. The gel may consist of partially neutralized, carboxymethyl cellulose dissolved in water.

Abstract: Powder coating compositions of blends of (1) vinyl chloride polymers having pendant hydroxyl groups, (2) a suitable crosslinker and (3) cellulose acetate butyrate have been produced and applied to a substrate and cured to form smooth, uniform coatings. The compositions can also contain certain blocked catalysts for improved cure.

Abstract: Aqueous coating composition for applying to rubber articles comprising a latex binder, an emulsifying agent, a filler, a thickening agent and a compound which imparts shear stability to the composition. The composition is applied to the surface of rubber articles prior to molding to impart release properties thereto, to improve the appearance and other characteristics such as weatherability.

Abstract: A pre-mixed adhesive composition comprised of a vinyl acetate polymer emulsion including a cross-linking catalyst and a cross-linking inhibitor providing a good cured water resistant Type II bond and extended shelf life so that the adhesive composition will not gel over an extended period of time and will therefore be usable for direct gluing application to semi-porous and porous substrates.

Abstract: A carbohydrate-phenolic resol resin and a process for production of same wherein an aldose saccharide, preferably a hexose, is reacted with a phenolic compound and urea in the presence of an acid catalyst to form a liquid fusible resin which is reacted with a lower aliphatic aldehyde in the presence of a basic catalyst to form said resol resin.

Abstract: A resin blend useful in molding compounds wherein a novolak resin, a carbohydrate and an aminoplast are blended with fillers and the like to form a molding composition curable with cross linking agents. Articles molded in the molding composition of the invention have good flow characteristics, physical and mechanical properties, and provide molded articles with uniform, smooth surfaces which can be pigmented with bright colors.

Abstract: An extender (and filler) for wood adhesives is provided from tree foliage powder or mulch. Suitable tree foliage includes that of conifers and other evergreens, and of deciduous trees. Test results have shown equivalent or better performance for the foliage powder compared to the normally used wheat flour, in bonding plywood or particleboard.