Patent · US Active

Temporary wet strength resin for paper applications

US7964669B2 · kind B2 · utility

2Cited by
3References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 2, 2010
Grant dateJun 21, 2011
Priority date—
Expiry dateApr 2, 2030

Classification

  • Technology area (CPC D)Textiles; Paper
  • CPC primaryD21H17/375
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A thermosetting resin comprising a reacted A) first partially crosslinked glyoxalated polymer comprising a reacted (i) first polyacrylamide backbone and (ii) a first glyoxal component; and B) a second crosslinked glyoxalated polymer comprising a reacted (i) second polyacrylamide backbone and (ii) a second glyoxyal component; such that the first polyacrylamide backbone has a molecular weight that is less than the molecular weight of the second polyacrylamide backbone; and the first polyacrylamide backbone and the second polyacrylamide backbone have a weight ratio ranging from 75:25 to 95:5. Methods for making and using the resin. Fibrous substrates made with the resin.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.