Alkyl hydroxylamine compounds and their use for shortstopping free radical polymerizations
US9309331B2 · kind B2 · utility
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6References
18Claims
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Key dates
| Filing date | Sep 23, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F36/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a method for shortstopping free radical polymerization reactions using a shortstopping agent comprising at least two alkyl hydroxylamines (AHAs) selected from the group consisting of primary AHAs, a mixture of at least one of each of primary and secondary AHAs, and salts thereof. A method for producing elastomers using the aforesaid shortstopping agents is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.