Amine treatment of polysaccharide solution
US4485020A · kind A · utility
20Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1983 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Aug 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermostable, viscous xanthan polysaccharide solution prepared by the process of heating a xanthan polysaccharide solution in the presence of at least one C.sub.1 to C.sub.10 alkyl or C.sub.3 to C.sub.10 cycloalkyl substituted primary or secondary mono- or diamine having an upper limit of a total of 15 carbon atoms under conditions sufficient to form a thermostable, viscous xanthan polysaccharide solution. The thermostable, viscous xanthan polysaccharide solution may be used as a mobility buffer in a process for the enhanced recovery of oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.