Alkyl hydroxylamine compounds and their use for shortstopping free radical polymerizations
US9234052B2 · kind B2 · utility
0Cited by
6References
12Claims
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Key dates
| Filing date | Jun 13, 2013 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jun 13, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F36/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a method for shortstopping free radical polymerization reactions using combinations of N-isopropylhydroxylamine (IPHA) or salts thereof with either primary or secondary alkyl hydroxylamines, or with at least two primary alkyl hydroxylamines. A method for producing elastomers using the aforesaid shortstopping agents is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.