Stable and aqueous compositions of polyvinylamines with cationic starch, and utility for papermaking
US8444818B2 · kind B2 · utility
9Cited by
8References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 7, 2011 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Jun 27, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A stable aqueous composition comprising polyvinylamine and liquid cationic starch in a ratio of from 90 to 55 parts of polyvinylamine on active basis to 10 to 45 parts of liquid cationic starch on active basis is disclosed. The composition can be used in papermaking as a strength or as a drainage aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.