Cationic grafted starch copolymers as high-strength paper additives
US4744864A · kind A · utility
10Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jun 2, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F251/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cationic starch graft copolymers are disclosed which improve the dry strength of paper when used as wet-end additives. Such copolymers comprise cationic starch, nonionic vinyl monomers and cationic vinyl monomers which have been polymerized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.