Hyperbranched polymers and methods for the preparation thereof
US6140525A · kind A · utility
8Cited by
1References
37Claims
0Family size
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Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0838
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a macromonomer and a method for its preparation. The macromonomer has silicon-bonded hydrogen atoms at one molecular chain terminal, and aliphatically unsaturated silicon-bonded organic groups at the other molecular chain terminal. This invention further related to a method of forming a hyperbranched polymer by polymerizing the macromonomer with a group VIII metal catalyst. The hyperbranched polymers can be used as surfactants, gelling agents, drug delivery systems, and polymeric absorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.