Stable suspension of hydrocolloids and superplasticizer
US6309455A · kind A · utility
8Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Aug 21, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/46
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. The solution is wet milled to form an extremely fine particle size distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.