Organophilic clay gellants and process for preparation
US4695402A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Aug 20, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2215/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved organophilic clay gellants can be prepared by a process wherein the smectite-type clay is subjected to shearing in order to break apart the agglomerates and/or the smectite-type clay can be reacted with organic cation and, possibly organic anion, under dilute reaction conditions. The reaction product is recovered using gentle drying conditions. Depending in large part on its composition, the organophilic clay gellant may be used to thicken a variety of organic compositions. In a preferred aspect, the organophilic clay gellant can be directly added to polyester compositions in order to efficiently and effectively increase the viscosity thereof or can be first formed into a pregel under low shear conditions to yield even higher efficiencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.