Porous materials having a dual surface
US4782040A · kind A · utility
21Cited by
11References
109Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Porous materials having a dual surface are disclosed. Also disclosed is a method for their preparation. An example of such a material is a silica gel reacted with a reactive silane intermediate such as (CH.sub.3).sub.2 Si.dbd.O and then, with a reactive silane such as ##STR1## to give a dual treated material having --((CH.sub.3).sub.2 SiO).sub.x H on the exterior surface and ##STR2## on the interior surface of the pores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.