Absorbance and permanent wet-strength in tissue and toweling paper
US5316623A · kind A · utility
28Cited by
10References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Dec 9, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for imparting wet strength to paper with improved water absorbency, that comprises adding to an aqueous suspension of cellulosic paper stock a neutral or alkaline-curing thermosetting wet-strength resin, a water-soluble polymer containing carboxyl groups or carboxylate ions as their alkali metal or ammonium salts, and a substantially non-thermosetting tertiary-amino polyamide-epichlorohydrin resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.