Method for increasing the strength of a cellulosic product
US7090745B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jan 26, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition includes at least one hydrophilic polymer containing primary (—NH2) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of increasing the strength of paper includes the step of contacting the paper with a composition comprising (i) at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function. A hydrogel composition is formed from a mixture of at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.