Aldehyde-functionalized polymers for paper strength and dewatering

• Main Authors: LIU MEI, GRIMM HERMAN MARK, LOWE ROBERT M
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: IMPREGNATING OR COATING OF PAPER; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

Disclosed are compositions and methods useful in applications relating to papermaking. The compositions and methods of the present invention comprise aldehyde-functionalized polymers designed to impart high paper strength and enhance water removal during the papermaking process. The aldehyde-functionalized polymers are of relatively low molecular weight, and comprise amino and/or amide groups mono-reacted and di-reacted at a ratio of at least about 1.5 to 1. The low molecular weight polymers of the present invention have the same strength and dewatering performance as corresponding high molecular weight polymers. 公开适用于造纸相关应用中的组合物和方法。本发明的组合物和方法包含设计成在造纸工艺期间赋予较高纸张强度且增强去水的醛官能化聚合物。所述醛官能化聚合物具有相对较低的分子量，且包含以至少约1.5比1的比率进行单反应和双反应的胺基和/或酰胺基。本发明的所述低分子量聚合物具有与对应的高分子量聚合物相同的强度和脱水性能。