Derivatized malto-oligosaccharides, methods for trash scavenging, and process for preparing a paper web
US6375798B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jun 5, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B31/125
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a method for derivatizing a malto-oligosaccharide. The method includes the steps of providing the malto-oligosaccharide and derivatizing the malto-oligosaccharide in an aqueous medium with a cationic agent to form a derivatized malto-oligosaccharides. Malto-oligosaccharides having a high DS sufficient to render the derivatized product suitable for use as a trash scavenger are attainable in accordance with the present inventive method. Also disclosed are a method for trash scavenging, a process for preparing a paper web, in which anionic trash is scavenged prior to withdrawing a paper web from a pulp furnish; and a paper web prepared in accordance with the present inventive process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.