Abstract: A digester additive formulation includes a combination of phenyl tetracarboxylic acid or a derivative or salt thereof, and a macromolecule polymer. The digester additive formulation is as an additive for a kraft process for production of pulp from raw materials, such as wood chips. When used in the kraft pulping process, the digester additive formulation improves viscosity of the resulting pulp and increases pulp yield.

Abstract: An interpenetrating polymer network (IPN) is described, as well as coating compositions including a combination of a starch solution and the IPN for coating a paper or paperboard. The IPN includes a first copolymer of acrylamide and acrylic acid with a second copolymer of acrylamide and acrylic acid. The first copolymer and the second copolymer are different from each other at least with respect to average molecular weight. Processes of making the IPN and the coating composition as well as coating the paper or paperboard with the coating composition are also described.

Abstract: Glyoxalated polyacrylamide terpolymers and compositions formulated with them are described. These glyoxalated polyacrylamide terpolymers and compositions thereof, can have extended shelf lives and can be used as additives for papermaking, such as providing improved papermaking retention/drainage, and paper products with improved dry and/or temporary wet strength.