Invention Grant
- Patent Title: Method of using aldehyde-functionalized polymers to enhance paper machine dewatering
- Patent Title (中): 使用醛官能化聚合物增强造纸机脱水的方法
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Application No.: US10764935Application Date: 2004-01-26
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Publication No.: US07641766B2Publication Date: 2010-01-05
- Inventor: Michael R. St. John , Angel P. Zagala
- Applicant: Michael R. St. John , Angel P. Zagala
- Applicant Address: US IL Naperville
- Assignee: Nalco Company
- Current Assignee: Nalco Company
- Current Assignee Address: US IL Naperville
- Agent Edward O. Yonter; Michael B. Martin
- Main IPC: D21H17/55
- IPC: D21H17/55 ; D21H21/10
Abstract:
A method of enhancing the dewatering of a paper sheet on a paper machine comprising adding to the paper sheet about 0.05 lb/ton to about 15 lb/ton, based on dry fiber, of 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.
Public/Granted literature
- US20050161181A1 Method of using aldehyde-functionalized polymers to enhance paper machine dewatering Public/Granted day:2005-07-28
Information query
