Chain transfer agents and its use in polymer synthesis
US6399731B2 · kind B2 · utility
3Cited by
4References
4Claims
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Key dates
| Filing date | Dec 2, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Dec 2, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F230/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for making a polymer comprising the step of synthesizing a polymer by employing a chain transfer agent having the formula (II) where X and Y are independently selected from oxygen, sulfur, and fully-substituted nitrogen where R1 and R2 are independently selected from hydrogen, halogen, or an organic group, with the proviso that at least one of R1 or R2 be hydrogen or halogen, R3 is an organic group R4 and R5 are independently selected organic groups, with the proviso that R3 is not hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.