Abstract: A composition and method for controlling foam in the coating solution of a papermaking operation consisting of a polyether surfactant and polyethoxylated sorbitol hexaoleate.

Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis and a high molecular weight gelatin having a molecular weight of about 100,000 or higher.

Abstract: A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.

Abstract: Composition and methods for stabilizing aqueous solutions of fatty acid imidazoline compounds. The methods employ the composition of fatty acid imidazoline compound and glycol ether compound, with and without an acid compound, to stabilize the aqueous fatty acid imidazoline solution.

Abstract: This invention relates to an improved press felt conditioning treatment which controls the deposition of poly(aminoamide)--epichlorohydrin type resins in a press felt. The treatment comprises applying to the felt an effective inhibiting amount of a conditioner comprising: an ethoxylated nonylphenol having greater than about 30 moles of ethoxylation; sodium n-hexadecyl diphenyloxide disulfonate; a fatty acid imidazoline or an alkylamidopropyldimethylamine which include an alkyl hydrophobe substituent having a carbon chain length of about 18.

Abstract: A method of improving the drainage characteristics of a pulp slurry in a papermaking operation utilizing the sequential steps of adding alum, ionic polyacrylamide and cationic starch. The cationic starch can be added to the slurry prior to or after the primary screen.

Abstract: A method of inhibiting scale formation in acidic aqueous systems where metal ions such as Al.sup.+3 and Fe.sup.+3 are present by employing a polyepoxysuccinic acid in combination with a metal ion binding material.

Abstract: A method for enhancing pulp washing efficiency is disclosed. An anionic sulfonate surfactant is added within the washing or pulping operation to enhance the removal of lignin and spent cooking chemicals from pulp.

Abstract: A method for reducing or preventing the generation of foam in aqueous environments by adding to the aqueous medium from 1.0 to 500 ppm of a foam control composition consisting of a .beta.-branched aldol ether alcohol, at least one surfactant having a melting point less than 20.degree. C. and a low HLB ethylene oxide-propylene oxide block copolymer.

Abstract: Disclosed are concentrated high flash point surfactant compositions comprising an alcohol ethosulfate free of low flash solvents, a primary alcohol ethoxylate and glacial acetic acid in a weight ratio of 5 to 80% alcohol ethosulfate, 80 to 20% alcohol ethoxylate and 2 to 20% acetic acid. Preferably, a fourth component consisting of a nonionic surfactant such as caster oil ethoxylate is employed in the composition.

Abstract: A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.

Abstract: A process for enhancing pulp washing efficiency is disclosed. An anionic surfactant is added within the washing or pulping operation to enhance the removal of lignin and spent cooking chemicals from pulp.

Abstract: A method of inhibiting scale formation in acidic aqueous systems where metal ions such as A1.sup.+3 or Fe.sup.+3 are present by employing a polyepoxysuccinic acid in combination with a metal ion binding material.

Abstract: An apparatus for dissolving dry polymer particles in water consisting of a bin which contains the powdered polymer, a feeding means for the delivery of the polymer to a vortex chamber, a feed line for the delivery of water into the vortex chamber, an eductor, a centrifugal pump and a tank which contains an agitator.

Abstract: A method for reducing or preventing the generation of foam in aqueous environments by adding to the aqueous medium from 1.0 to 500 ppm of a foam control composition consisting of a .beta.-branched aldol ether alcohol, at least one surfactant having a melting point less than 20.degree. C. and a low HLB ethylene oxide-propylene oxide block copolymer.

Abstract: An apparatus and method to simultaneously evaluate the drainage, retention and formation characteristics of paper pulp comprising mixing the paper pulp furnish in the top chamber of the apparatus, releasing the furnish into a middle chamber via a valve having a cone shaped structure for even distribution of the furnish onto a wire screen, and utilizing a time delay before opening a vent valve in order to attenuate impingement forces. The apparatus utilizes a rotating blade under the wire screen to duplicate the pulsation forces of full scale papermaking equipment, an externally applied means to assist in the removal of water similar to a paper machine couch roll. Data generated during the foregoing steps is fed into a computer to evaluate the entire free water drainage process of the furnish. The device is able to set parameters to simulate the water removal process on most paper machines via level control and duration of pertinent variables.

Abstract: The present invention relates to trihalo alkyl sulfone and mixtures of bis(trichloro methyl) sulfone (BTCMS), a non-ionic surfactant and a cationic quaternary ammonium halide surfactant formulated as a stable solution in water. The method of formulation comprises adding the BTCMS to an aqueous system containing a nonionic surfactant and a cationic quaternary ammonium halide surfactant. These formulations are useful as biocides and present advantages over organic solvent based formulations.

Abstract: A method of inhibiting the deposition of organic contaminants in a pulp and papermaking system comprising adding to the system an effective amount of a detackifying composition comprising a charged polymer and an oppositely charged surfactant, with the proviso that at least the polymer or the surfactant be surface active.

Abstract: A composition comprising a .beta.-branched aldol ether alcohol having the structure: ##STR1## wherein X=5 to 8, at least one surfactant and water which is useful to prevent or reduce foam present in the aqueous medium of paper processing operations.

Abstract: A composition and method for deinking dry toner electrostatic printed wastepaper is disclosed. The composition comprises a combination of: (1) aliphatic petroleum distillates, (2) an alkylphenoxypoly-(ethyleneoxy) ethanol, and (3) an ethoxylated polyoxypropylene glycol.The method comprises administering a sufficient amount of this combination to a sample of electrostatic printed wastepaper for which treatment is desired.