Use of viscosity-adjusting agent to counteract viscosity decrease upon temperature increase of a water-based system
US5279660A · kind A · utility
7Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Jun 5, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2506
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a method in a water-base system for at least partially avoiding an expected viscosity decrease or providing a viscosity increase upon a temperature increase, by using a system containing as viscosity-adjusting agents a nonionic cellulose ether in such an amount that the aqueous solution thereof has a viscosity of 10-10,000 cP, measured according to Brookfield LV, 12 rpm at 20.degree. C., and an ionic surface-active compound in an amount of 1-30 mmol per liter of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.