Modified polysaccharides containing amphiphillic hydrocarbon moieties
US6517678B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jan 20, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Modified polysaccharides (such as starches, gums, chitosans, celluloses, alginates, sugars, etc.), which are commonly used in the paper industry as strengthening agents, surface sizes, coating binders, emulsifiers and adhesives, can be combined into a single molecule with amphiphilic hydrocarbons (e.g. surface active agents) which are commonly utilized in the paper industry to control absorbency, improve softness, enhance surface feel and function as dispersants. The resulting molecule is a modified polysaccharide having surface active moieties which can provide several potential benefits, depending on the specific combination employed, including: (a) strength aids that do not impart stiffness; (b) softeners that do not reduce strength; (c) wet strength with improved wet/dry strength ratio; (d) debonders with reduced linting and sloughing; (e) strength aids with controlled absorbency; and (f) surface sizing agents with improved tactile properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.