Temporary wet strength resins
US5723022A · kind A · utility
30Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jul 11, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Compositions comprising a blend of (1) an ionic, water-soluble, vinylamide polymer containing sufficient vinylamide and --CHOHCHO substituents to be thermosetting and a ratio of glyoxal substituents to glyoxal-reactive substituents in excess of about 0.02:1.0 and (2) a glyoxalated, cationic, water-soluble vinylamide polymer having a molecular weight of about 500 to about 6000, sufficient glyoxal-reactive and glyoxal substituents to be thermosetting and a ratio of glyoxal substituents to vinylamide substituents being in an excess of about 0.1:1.0, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.