Silicon containing multi-arm star polymers
US6350384B1 · kind B1 · utility
9Cited by
5References
14Claims
0Family size
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Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Aug 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/936
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Multi-arm star polymers are derived from silicon containing dendrimers and have arms containing the moiety where each R′ can be the same or different and is an alkyl group containing 1-6 carbon atoms such as methyl and ethyl or an aryl group such as phenyl; R″ is alkylene radical —(CH2)a— in which a has a value of 2 or 3; and R′″ is the —(CH2)bCH3 group in which b has a value of 1-50. These compositions can be used for dissolving metals and other electrophiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.