Abstract: The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculent and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

Abstract: The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

Abstract: A multi-layered paper product. The paper product has individual layers for providing a soft tactile sensation to the user, for providing strength, and for providing bulk. Suitable fibers for increasing bulk may be synthetic fibers, debonded fibers, weakly bonded fibers, curled fibers, and fibers combined with particulate fillers. An exemplary embodiment having five layers is disclosed.

Abstract: The present invention relates to a stabilized emulsified or dispersed composition comprising a hydrophobic phase and an aqueous phase, the composition being stabilized by a cationic colloidal coacervate stabilizing agent, the coacervate stabilizing agent comprising an anionic component and a cationic component, the anionic and cationic components being present in a proportion such that the composition has a zeta potential of at least about 20 millivolts. The hydrophobic phase is preferably a non-rosin sizing agent, including a reactive or nonreactive sizing agent, although mixtures of rosin and non-rosin sizing agents can form stable emulsions or dispersions using the coacervate of the invention. Methods of making and using the stable emulsions or dispersions are also disclosed, as is sized paper made using an emulsified or dispersed sizing agent stabilized with the coacervate stabilizing agent of the invention.

Abstract: A simplified method for the optical brightening of paper either in the pulp mass, the size or metering press or by coating by the use of a formulation of an optical brightening agent together with a swellable layered silicate.

Abstract: The invention relates to cellulose fluff pulp products that are debondable into fluff with markedly lower energy input, to a process for making the products, and to absorbent products using the fluff Most of the pulp products show no reduction in liquid absorbency rate from that of untreated fiber and significantly higher rates than pulps treated with the usual debonding agents. The products are made by adhering fine non-cellulosic particles to the fiber surfaces using a retention aid. The fiber is preferably treated with the retention aid in an aqueous suspension for a sufficient time so that the retention aid is substantively bonded with little or none left free in the water. The fine particulate additive is then added and becomes attached and uniformly distributed over the fiber surfaces with very little particle agglomeration occurring. The fiber is most usually not refined or only very lightly refined before sheeting.

Abstract: The invention relates to a process for reducing sticky contaminants in stock systems containing waste paper and in coated broke, and their reuse in the manufacture of papers. In this process, both polyvinyl alcohols and bentonite are added.

Abstract: Sizing dispersions of liquid reactive size are made by dispersing the reactive size as a neat liquid into a dispersion of bentonite or other anionic microparticulate material in water. These dispersions can be used for internal sizing, for instance wherein the dispersion is used as the anionic microparticulate stage in a microparticulate retention paper-making process, or they can be used for external sizing.

Abstract: A drainage/retention aid comprising a combination of a) microparticles; and b) a vinylamine copolymer having the general structure: wherein m is from 1-99 mol %, n is from 0 to 50 mol % and o is from 1 to 99 mol %; A is selected from the group consisting of one or more repeating units having the following general structures: and salts thereof wherein p, q and r are mol percentages from 1 to 99, each R1 is independently H or CH3, and X is —CN, —COOR2, —CONR3R4, —OR5, —OCOR6, and mixtures thereof; wherein R2, R3, R4, R5, R6 are independently selected from H or C1 to C4 alkyl; and wherein the vinylamine copolymer has a charge density in a range of from 2 to 24 mEq/g.

Abstract: The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

Abstract: The invention concerns a novel method for making paper based on sheet cellulose fibre, wherein a novel retention system comprising a suspension of bentonite and a cationic galactomannan is used to improve in particular the retention of the incorporated mineral fillers. The invention also concerns a method for making paper using a retention system which substantially improves draining.

Abstract: Starch is added to the thinstock in a papermaking process in the form of a coagulated slurry containing undissolved starch particles, cationic polymeric flocculant and anionic microparticulate network agglomeration aid, such as bentonite. The flocculant and agglomeration aid interact to give network flocculation in which the starch particles are trapped. Improved retention of the starch in the resulting paper is achieved.

Abstract: A papermaking process consisting essentially of: forming an aqueous cellulosic papermaking slurry; adding to the slurry certain additives, with said certain additives selected from the group including: coagulants; sizing agents; and mineral fillers; draining the slurry to form a sheet; and drying the sheet to form a paper sheet; the improvement comprising adding to the slurry, prior to it being drained; an effective amount of a cationic dispersion polymer; which cationic dispersion polymer is a copolymer comprising about 30 mole % diallyldimethylammonium chloride (DADMAC) and about 70 mole % acrylamide (AcAm); and adding to the slurry, either before or after said cationic dispersion polymer is added and the slurry is drained, a microparticle selected from the group consisting of a) copolymers of acrylic acid and acrylamide; b) bentonite; and c) dispersed silica; with the proviso that said coagulant cannot be a cationic dispersion copolymer comprising about 30 mole % diallyldimethylammonium chloride

Abstract: Provided are alkenyl and/or alkyl succinimides formed from at least one alkenyl or alkyl succinic anhydride and at least one aliphatic amine having one or two primary amino groups in the molecule. These succinimides are characterized in that each alkenyl or alkyl group thereof contains in the range of 16 to 30 carbon atoms. Such group is bifurcated on its alpha carbon atom into two branches neither of which contains less than 2 carbon atoms, one such branch being free of any side chain, and the other such branch either being free of any side chain or containing at most one methyl or methylene side chain. In addition the succinimide has a viscosity at 80° C. of less than about 100 centistokes. These succinimides are especially useful as internal and external sizing agents for paper and paper products.

Abstract: Granular absorbent products with low amounts of paper fiber are described. The absorbent products are made from recycled paper and include less than about 10% of paper fibers having a length sufficient to be retained on a 100 mesh screen. A process for making such granular absorbent products is also provided. The granular absorbents are useful for absorbing liquids spilled on the floor, and are crushable when walked on to provide greater resistance to slipping, and yet have a high resistance to attrition.

Abstract: A lightweight, coated web printing paper is described for suitability in the cold-set printing process, which has specific values for water penetration and ink absorption and has gloss values in the 40-50% range for a smoothness in the range of 500 sec. Bekk.