Abstract: The present invention relates to a process for the manufacture of protein or peptide polystyrene latex compounds useful as diagnostic agents, in which a protein or peptide is linked by means of an aromatic diazonium compound to a homo- or copolymer of styrene as well as the compounds obtained by said process.

Abstract: The tendency of cellulose acetate solutions, containing methylolated polymers of melamine or guanamine, to prepolymerize or gel is reduced by the addition to the solutions of an amine oxide. The amine oxide also acts to reduce the viscosity of the cellulose acetate solutions.

Abstract: Water-soluble polyesterimide resin compositions are prepared by in situ reaction of a mixture of glycol and triol with organic diacid and trimellitic anhydride/aromatic primary diamine. The product is reacted with additional trimellitic anhydride for use as wire enamel in water-base solution and chelated ethanolamine titanate is added to the solution as a crosslinking agent.

Abstract: Precipitation at relatively high pH levels, e.g. above about 4 or more, in an acidic water/alcohol type fountain composition containing polyvalent metal cations and, as an active polymer component for rendering the non-image areas of a lithographic plate hydrophilic, a polyacrylamide-based polymer having a weight average molecular weight (M.sub.w) of from about 5,000 to about 1,000,000 and having from about 3 to about 70 percent of the carbonyl sites as carboxyl groups, or a blend of polyacrylamide and polyacrylic acid, or the like, is controlled by providing in the fountain composition an effective amount of an organic chelating agent for polyvalent metal cations which is substantially inert with respect to the active polymer component. The suitable chelating agents are further characterized in that at 25.degree. C, each (A) has a 1:1 stability constant with zinc of at least about 10.sup.7.5 ; (B) has a solubility of at least about 0.

Abstract: Absorbent polymeric compositions are prepared by drying aqueous dispersions of physical mixtures of polyhydroxy polymers, such as starch, with carboxylate-containing synthetic polymers, such as saponified polyacrylonitrile of partially saponified polyacrylamide, and then curing the resulting dry solids with either heat or prolonged standing at room temperature. These compositions typically absorb several hundred times their weight of deionized water.

Abstract: Improved aqueous color developing compositions for copying papers are prepared by emulsifying phenolic resins having relatively low molecular weights. The aqueous emulsions are prepared by condensing a phenol and an aldehyde in the presence of an acid catalyst, and without the customary steps of high temperature concentration or dry pulverization of the solid resin the precondensate is directly emulsified with starch or other emulsifiers while in a liquid state. Uniformity of resin particle size is achieved by accelerated agitation of the precondensate. The process provides stable emulsions with fine resin particles having a diameter of under about 7 microns, which excel in color developing properties, fastness to light and have extended shelf life.

Abstract: A support for a biologically active material which comprises an organic polymer incorporating amidine groups the carbon atoms of which are bound to side chains each of which includes a functional group capable of linkage to a biologically active material, and a carbonyl group or an enol form thereof which is spaced from the carbon atom of an amidine group by the backbone dependent nitrogen atom thereof and at most by one other nitrogen atom in the side chain.

Abstract: Water-absorbent, starch copolymerizates are prepared by copolymerizing an ethylenically unsaturated starch with other ethylenically unsaturated monomers which contain water-attractant groups or precursors of water-attractant groups. The water-absorbent starch copolymerizates may be easily prepared into the desired configuration for a particular end-use or combined with other substrates or carriers. The unpolymerized starch and monomers or precursors thereof may be applied or incorporated into a suitable carrier or substrate (e.g., cellulosic materials such as textiles, papers, etc.) and copolymerized in situ to provide a composite article of unitary construction with the water-absorbent starch copolymerizate permanently bonded or affixed thereto.

Abstract: Modified, regenerated cellulosics having good receptivity to acid dyes are prepared by introducing a poly-2-alkyl-2-oxazoline, such as poly-2-ethyl-2-oxazoline, having a weight average molecular weight of at least about 10,000 into an aged, cellulose-xanthate solution and forming modified, regenerated cellulosics therefrom. These cellulosics exhibit rapid and quantitative acid-dye absorption and good dye fastness.

Abstract: Bark-extended tannin-aldehyde resinous adhesives are formed in situ as adhesives for wood products, such as plywood. Bark, in a finely divided particle form, is treated with alkali and then used as an extender by admixing the bark particles with tannin and an aldehyde co-reactant therefor. The admixture is combined as a bonding agent for the wood members to be adhered, and is formed in situ into an adhesive by subjecting the wood members to temperature and pressure conditions effective to form a bark-tannin-aldehyde resin.

Abstract: Significantly higher productivity of polyester feed yarn is achieved when the polymer from which the feed yarn is melt spun is chain-branched with multifunctional chain branches having 1-15 microequivalents of reactive branching sites based on one gram of the polymer. This productivity increase (over conventional production employing the same spinnerette in accordance with teachings of the prior art as applied generally to unbranched polymers) may be achieved specifically by spinning a feed yarn (of the same filament denier and draw ratio) at a higher throughput rate at a higher windup speed followed by draw-texturing (at the same draw ratio to the same drawn denier); or by spinning at a higher throughput rate employing the same windup speed a feed yarn of higher denier and draw-ratio followed by draw-texturing at the higher draw ratio to the same drawn denier; or by any combination thereof.

Abstract: A clay composition mixed with water for forming a cohesive and plastic like material. The clay composition is used as a construction material, for sculpturing, and in arts and crafts for making a variety of art objects.

Abstract: A non-proteinaceous binder is provided for cast coating of paper which comprises three primary components: a modified starch; a styrene-butadiene latex characterized by a particle size of about 800 to about 1300 angstroms, a solids content of between about 45.0 and about 47.0%, a maximum 200 mesh residue of about 0.075 gms./900 mls., a pH of between about 3.8 and 4.8, a maximum Brookfield viscosity of about 100, and a surface tension of between about 43.0 and about 49.0; and a second styrene-butadiene latex characterized by a particle size of about 1350 to about 1650 angstroms, a solids content of between about 47.0 and about 49.0%, a maximum 200 mesh residue of about 0.05 gms./900 mls., a pH of between about 5.5 and 6.5, a maximum Brookfield viscosity of about 300 cps., and a surface tension of between about 49.0 and 55.0.

Abstract: A method for accelerated curing of phenolic resin adhesives comprises adding powdered green tea to a thermosetting phenolic resin at about ambient temperature.

Abstract: A chromatography solid support is prepared by reacting a nucleic acid base, a related compound thereof or a mixture thereof with an epoxy group-containing porous gel in a solvent in the presence of a carbonate.

Abstract: All or part of bisphenol-A process mother liquor recycle stream is contacted with acidic cation exchange resin to remove color bodies. The acidic cation exchange resin is periodically washed and reactivated after use by a mixed phenol/water wash.

Abstract: A copolyester having good impact strength is prepared utilizing terephthalic acid or the lower alkyl esters thereof and a mixture of 1,4-butanediol and 1,4-cyclohexanedimethanol as the sole monomers.

Abstract: Coconut shell flour is used as a filler in insulating compositions containing coconut shell flour filler for electric cables.

Abstract: A water-soluble anionic graft copolymer of xanthan gum and polyacrylamide wherein at least part of the amide function is sulfomethylated.

Abstract: A thermosetting molding composition comprising from 15 to 50 wt.% of Novolak phenolic resin; from 3 to 10 wt.% of hexamine; from 1 to 4 wt.% of a stabilizing-catalyzing mixture consisting of an amine chosen from polyamino aliphatic compounds and mono or polyamino aromatic compounds, and orthoboric or metaboric acid, wherein the ratio between said amino groups and the number of acid equivalents in said mixture is from 0.001:1 to 0.3:1; from 0.5 to 2 wt.% of alkaline earth metal oxide; and one or more inert fillers. This composition is particularly suitable for the production of molded articles by injection molding.