Abstract: A method for preparing an adhesive resin for use in a coating composition for a crepe paper manufacturing process that includes the steps of reacting a polycarboxylic acid or a derivative of a polycarboxylic acid with a polyamine to form a polyamidoamine intermediate; reacting a polyetheramine with an epihalohydrin to form a polyetheramine-epihalohydrin intermediate and reacting the polyamidoamine intermediate with the polyetheramine-epihalohydrin intermediate to form a polyamidoamine polyetheramine-epihalohydrin resin.

Abstract: A process is disclosed for making paper having improved filler retention and opacity. The process includes the step of adding Additive A and Additive B to a slurry in a wet end of a paper machine wherein the slurry comprises pulp and a filler. Additive A is a wet strength agent. Additive B is an anionic polymer having a charge density from about ?3000 to about ?7000 ueq/g on a dry basis when measured in a buffer having a pH of about 6. Additive B also has a weight average molecular weight of from about 150,000 to about 1,000,000, Daltons.

Abstract: A process is disclosed for making paper having improved filler retention and opacity. The process includes the step of adding Additive A and Additive B to a slurry in a wet end of a paper machine wherein the slurry comprises pulp and a filler. Additive A is a wet strength agent. Additive B is an anionic polymer having a charge density from about ?3000 to about ?7000 ueq/g on a dry basis when measured in a buffer having a pH of about 6. Additive B also has a weight average molecular weight of from about 150,000 to about 1,000,000, Daltons.

Abstract: A method of performing biorheological measurements on a suspension (4) of cells by causing some of the cells to pass through one or more microsize tunnels (3) in a solid medium (1, 2) under a pressure difference between the tunnel ends and monitoring (6) their passage through the tunnel or tunnels, characterized in that the pressure difference is monitored to produce a signal which is recorded or is utilized to provide feedback to regulate the biorheological measurements. Apparatus for performing this method may have such a pressure feedback control, or may have tunnels with at least partly transparent walls for transmitting optical information to a detector for the biorheological measurements.