Aldehyde-functionalized polymers

摘要

A composition for enhancing the dewatering of a paper sheet on a paper machine and a method for using the composition is disclosed. The composition comprising one or more aldehyde-functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000. The method comprising adding the composition to the paper machine at a dosage of about 0.05 lb/ton to about 15 lb/ton, based on dry fiber.

主权项

1. A composition comprising: (i) one or more aldehyde-functionalized polymers comprising amino and/or amido groups wherein at least about 15 mole percent of the amino and/or amido groups are functionalized by reacting with one or more aldehydes and (ii) at least about id="REI-00001" date="20140610" 60id="REI-00001" id="REI-00002" date="20140610" 70 to 80 id="REI-00002" mole percent of the one or more aldehydes remain unreactedid="REI-00003" date="20140610" , wherein the amount of unreacted aldehyde is based on an amount used to functionalize the amino or amido groupsid="REI-00003" .