Blends of polymers as wet strengthening agents for paper

摘要

Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.

主权项

1. A method for making a paper product, comprising:
contacting a plurality of pulp fibers with a resin system comprising a polyamidoamine-epihalohydrin resin and a urea-formaldehyde resin to produce a paper product, wherein the polyamidoamine-epihalohydrin resin and the urea-formaldehyde resin are sequentially or simultaneously contacted with the plurality of pulp fibers, and wherein the period for sequential addition between the polyamidoamine-epihalohydrin resin and the urea-formaldehyde resin is about 1 second to about 1 hour, and wherein the resin system comprises greater than 30 wt % to about 80 wt % of the urea-formaldehyde resin, based on a total weight of the polyamidoamine-epihalohydrin resin and the urea-formaldehyde resin.