Aldehyde-functionalized polymers
US7901543B2 · kind B2 · utility
15Cited by
25References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2009 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Dec 14, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.