Stable suspension of hydrocolloids
US6221152A · kind A · utility
26Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2000 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Sep 8, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention comprises a stable hydrocolloid welan gum in which a hydrocolloid, preferably welan gum, is uniformly dispersed in a superplasticizer such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. This is then dispersed in a rheological control agent which is a microbially-produced cellulose fiber composition. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications, insulation fluids and de-icer compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.