Abstract: This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid nonionic or anionic polymer.

Abstract: This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer.

Abstract: Synthetic polymers having hydrogen bonding capability and one or more polysiloxane moieties are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.

Abstract: Synthetic polymers having hydrogen bonding capability and one or more aliphatic hydrocarbon moieties are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.

Abstract: Synthetic polymers having moieties capable of covalent or hydrogen bonding to cellulose and one or more amphiphilic moieties are disclosed. These polymers are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.

Abstract: This invention relates to novel aqueous emulsion polymers obtained by free-radical initiated addition polymerization of at least one monomer in the presence of degraded starch and at least one polymeric emulsifier from the series of sulfo-containing maleic anhydride copolymers and/or sulfo-containing oligourethanes with a branched molecular structure. The invention further relates the use of such emulsion polymers as surface sizing agents for paper and paperlike materials.

Abstract: A paper production process, characterized by the process step of providing to the paper at some point in the production process a compound of formula (I) which reduces the tendency of the obtained paper products, particularly those made from high-yield pulps, to yellow on exposure to light.

Abstract: A polymer (B) is prepared by polymerizing one or more vinyl monomers (c) in the presence of a polymer (A) prepared by polymerizing one or more vinyl monomers (a) selected from the group consisting of vinyl monomers represented by the general formula (1): wherein R1 represents a hydrogen atom or a lower alkyl with 1 to 3 carbon atoms and n is an integer of 1 to 8 and their salts with one or more vinyl monomers (b) which are co-polymerizable with the vinyl monomer components (a).

Abstract: Anionic nanocomposites for use as retention and drainage aids in papermaking are prepared by adding an anionic polyelectrolyte to a sodium silicate solution and then combining the sodium silicate and polyelectrolyte solution with silicic acid.

Abstract: Compositions and methods are provided for the sizing of paper, to enhance the quality of images printed thereon. The novel sizing compositions contain as a sizing agent a mixture of a polyacid and a polybase. When applied to a paper substrate, such as in an internal or external sizing process, the sizing compositions result in a sized paper substrate that provides high quality printed images when printed with an ink containing a reactive dye having ionizable and/or nucleophilic groups capable of reacting with the sizing agent. Images printed on a paper substrate coated with the sizing compositions of the invention are bleed-resistant, water-resistant (e.g., water-fast), and/or are characterized by an enhanced chroma and hue.