Thermal- and photoinitiated radical polymerization in the presence of an addition fragmentation agent
The present invention relates to compositions, from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group can be prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
10.06.2003
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| Online Access | Get full text |
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| Summary: | The present invention relates to compositions, from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group can be prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/polymers obtainable by said process and the use of specific addition fragmentation agents for the polymerization process. The addition fragmentation agents are new in part and these are also subject of the present invention.
Disclosed are compositions from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group are prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/polymers obtainable by said process and the use of specific addition fragmentation agents for the polymerization process. The addition fragmentation agents are new in part and these are also subject of the present invention. The addition fragmentation agents are of the formula (Ia), (Ib) or (Ic) where Y is a group which activates the double bond towards Michael addition. |
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