Polar silanes and their use on silica supports
US6645378B1 · kind B1 · utility
16Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A modified silica support having a polar phase bound to its surface and suitable for use for chromatographic separations, having the following formula: wherein, m=0-20; n=0-20; p=1-50; X is sulfonyl, carbonyl, carbamoyl, or oxycarbonyl; R1=H, alkyl, substituted alkyl, aryl or substituted aryl groups; R2=alkyl, substituted alkyl, aryl or substituted aryl groups; and R3 and R4 are alkyl, aryl, hydroxyl, or alkoxyl groups or groups including oxygen atoms cross-linked to silicon atoms. Also, a polar silane intermediate to make this support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.