Abstract: Starch is phosphorylated by a virtually pollution-free, continuous process whereby an aqueous reagent solution of a tripolyphosphate, orthophosphate or pyrophosphate salt or a mixture thereof is sprayed onto a moist starch cake on a rotary vacuum filter in an amount sufficient to achieve efficient impregnation of the starch cake without losing significant levels of salt to the effluent. In a preferred embodiment, the reagent solution contains alkali metal tripolyphosphate salt and is obtained by diluting a concentrated solution thereof. The thus-impregnated starch is subsequently dried and heat-reacted by known procedures to produce an orthophosphate starch monoester.

Abstract: PET bottle assemblies are prepared from a PET bottle which has been blow-molded and joined to a HDPE base cup with a hot melt adhesive which consists essentially of a blend of: (1) a block copolymer selected from the class consisting of: (a) A-B-A block copolymer where A is a monovinyl aromatic hydrocarbon and B is either a conjugated diene or a rubbery mono-olefin and (b) a teleblock copolymer comprising molecules having at least three branches radially branching out from a central hub, each said branch having polystyrene terminal blocks and a butadiene segment in the center; (2) at least one tackifying resin which serves to extend the adhesive properties of the system; (3) at least one stabilizer; and (4) at least one wax or oil diluent.The resultant assemblies are characterized by bonds or joints which possess an unusual combination of excellent low and high temperature adhesion and flexibility as well as high bond strengths.

Abstract: A cold-water dispersible, modified starch characterized by forming a gel having a Bloom strength of at least 45 grams is prepared by converting a tapioca starch to a water fluidity of about 10 to 63, preferably 20 to 40; reacting the starch with a crosslinking agent to within defined Brabender viscosity limits sufficient to provide the modified starch with gelling properties; and drum-drying the converted, crosslinked starch to obtain the modified starch product. The gelling instant starch thus prepared is particularly useful in food systems of the type which gel upon standing, such as pie fillings, jellies, and puddings.

Abstract: The solubility of hair spray resins derived from copolymers of unsaturated monocarboxylic acids and vinyl or vinylidene monomers in alcohol-hydrocarbon propellent systems is substantially increased by use of specific long chain amines as neutralizing agents therein.

Abstract: In an improved process for preparing water-dispersible chocolate liquor, melted chocolate liquor is mixed with starch and water in selected proportions, and the resulting mixture is then passed through an extruder at an elevated pressure and temperature for a period of time sufficient to partially hydrate the starch and finally extruded through an orifice. The product is preferably obtained in powder form and may be used in many applications such as dry food mixes.

Abstract: The invention discloses a dual derivatizing process for the preparation of cold water swelling starches and foodstuffs thickened therewith. The starch base is first subjected to a primary crosslinking reaction using sodium trimetaphosphate (STMP) according to conventional techniques, then reslurried, treated with additional STMP and drum dried to effect a secondary cross-linking reaction in situ.

Abstract: An adhesive composition based on 2-cyanoacrylate esters contains as an anionic polymerization inhibitor an acid chelate formed of boric acid or a derivative thereof and a selected polyhydroxy compound. The chelate is conveniently formed in situ in the 2-cyanoacrylate ester, but may also be prepared separately and added to the ester directly. An exemplary acid chelate used as stabilizer is prepared from boric acid and pyrogallol. The resulting stabilized adhesive compositions have a rapid cure rate and may be used on a wide variety of substrates.

Abstract: An improved latex binder for nonwoven webs comprising an acrylate- and/or vinyl acetate-based copolymer containing 0.1-10% by weight of 2-hydroxyethyl or 2-hydroxypropyl acrylate or methacrylate is prepared by employing in combination with the copolymer 0.2-10% by weight, on latex solids, of anionic surfactant and 0.3-15% by weight, on latex solids, of nonionic surfactant in selected relative proportions and by adding to the copolymer 1-40% by weight, on latex solids, of a water-soluble salt. The resultant binder is characterized by being stable to coagulation at room temperature but coagulable at a temperature between 40.degree. and 85.degree. C. In the preparation of nonwoven fiber material, a nonwoven web is impregnated with the copolymer latex binder, heated to a temperature of within 40.degree. and 85.degree. C. sufficient to coagulate the binder within the web and thus prevent migration, and finally dried to form a chemically bonded, nonwoven fiber material in sheet form.

Abstract: Pressure sensitive adhesive compositions are prepared from a mixture of a specific pressure sensitive polymer, a chlorosulphonated polyethylene and a polymerizable vinyl compound. The compositions are cured to form a strong bond upon contact with a condensation reaction product of a primary or secondary amine and an aldehyde.

Abstract: Starch ether derivatives are prepared by reacting a starch base with about 0.5-100% by weight of a neutralized alkyl ester of 3-chloro-2-sulfopropionic acid, based on dry starch, and then isolating the resultant starch derivative. The 2-sulfo-2-carboxyethyl starch ethers thus prepared may be utilized in many applications, and are particularly useful as wet-end additives in paper manufacturing at low pH.

Abstract: Starch is phosphorylated by an improved pollution-free process which involves forming a reagent solution of an alkali metal tripolyphosphate salt in water having 20- 36% by weight of the salt dissolved therein, forming a starch cake containing no more than 45% by weight moisture, adding 2 - 30% by weight of the tripolyphosphate salt reagent solution to the starch cake, and drying and heat-reacting the thus-impregnated starch. In this process more efficient impregnation of the starch is achieved. The impregnation is preferably effected in a centrifuge.

Abstract: A novel class of photosensitive polymers are disclosed which are prepared by the reaction, preferably in the presence of a catalyst, of a reactive polymer, a halogenated cyclic anhydride and glycidyl ester of an alpha, beta-unsaturated carboxylic acid. These polymers are capable of undergoing vinyl-type polymerization when exposed to actinic radiation.

Abstract: Adhesive compositions having enhanced bond strength are obtained by mixing a monomeric ester of 2-cyanoacrylic acid with an anionic polymerization inhibitor and from 1 to 30 mmoles per kg. of adhesive of an adhesion promoter of the formula: ##STR1## wherein R' is hydrogen or an alkyl, aryl or cycloalkyl group having 1-10 carbon atoms. Such compositions may be used on a wide variety of substrates and are particularly useful on metals.

Abstract: Curable two-part flexible film laminating adhesives are prepared from:(a) an alcoholic solution of a ketimine and/or amine terminated polyetherurethane-urea prepared by the addition of at least 50% of the stoichiometric equivalent of a diketimine having --NH functionality of 0, 1 or 3 to an isocyanate terminated polyalkylene ether diol urethane prepolymer; and(b) a polyepoxide in a chain-extending and crosslinking amount of about 10-30% by weight, based on the weight of said ketimine and/or amine terminated polyetherurethane-urea solids. Laminates formed using these adhesives are characterized by rapid curing, high bond strength, superior heat resistance as well as chemical and water resistance.

Abstract: Graft copolymers of a water soluble monomer and polysaccharide are prepared employing a two-phase reaction system under controlled conditions. The resultant graft copolymers are formed at high grafting efficiency and high conversion and obtained as precipitated solid beads.

Abstract: Water soluble and water swellable highly substituted polysaccharide derivatives are prepared in highly concentrated aqueous solutions under controlled reaction conditions. The resultant derivatives are produced efficiently and readily isolated in solid form.

Abstract: Improved particle agglomeration of water-absorbent compositions of matter together with improved "wet-out" and consequent absorbent properties are provided by a method for drum drying said compositions under controlled conditions.

Abstract: Novel starch ether derivatives are prepared by reacting starch with 3-chloro-2-sulfopropionic acid. The resulting 2-sulfo-2-carboxyethyl starch ether derivatives find use in many applications, but are particularly useful as pigment retention aids in papermaking processes.

Abstract: Pressure sensitive adhesive compositions are prepared from a mixture of an acrylic pressure sensitive polymer, a chlorosulphonated polyethylene and a polymerizable vinyl compound. The compositions are cured to form a strong bond upon contact with a condensation reaction product of a primary or secondary amine and an aldehyde.

Abstract: A granular starch base is reacted with a selected propiolate ester in aqueous medium to produce a granular, acetal cross-linked starch, the cross-linkages of which are substantially removable in acidic medium. The cross-linked starch product thus prepared is useful in producing highly-substituted granular starch derivatives from which the cross-linkages may be readily and substantially removed as desired.