Particulate amorphous silica associated with thin polymeric film
US5426136A · kind A · utility
17Cited by
6References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1993 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Mar 24, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Particulate amorphous silica, surfactant, monomer, and an aqueous solvent are brought into mutual contact so that as equilibrium is approached the concentration of the surfactant in the liquid phase is below, at, or slightly above the critical micelle concentration; the monomer is then polymerized to form polymeric film associated with at least a portion of the surface of the particulate amorphous silica, the polymeric film being (i) homopolymer of an aliphatic monomer or (ii) copolymer of at least two different monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.