Polysaccharide graft-polymers and the use in papermaking thereof
US5583193A · kind A · utility
91Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a modified polysaccharide graft copolymer complex which comprises the steps of: PA1 i. subjecting polysaccharide to graft copolymerization with a vinyl monomer; PA1 ii. treating the polysaccharide graft copolymer with: PA2 a. polyethylene glycol to provide a polymer-PEG complex; or PA2 b. a silicate compound to provide a silica precipitated polymer; and PA1 iii. recovering the polymer-PEG complex or silica precipitated polymer. This modified polysaccharide graft copolymer may be used as a surface sizing agent in the preparation of paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.