Free radical inhibitors for quenching aqueous phase polymer growth and related methods
US6541579B2 · kind B2 · utility
10Cited by
10References
32Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Nov 28, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C243/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An aqueous phase inhibitor for quenching free radical polymerization comprising a free radical quenching agent having a hydrophilic tail is disclosed, as well as a coating and related methods. In one embodiment, the free radical quenching agent can either be an N-hydroxylamine or an N-nitrosonamine, the hydrophilic tail can be a polyhydric alcohol tail and the inhibitor can be a concentrate in a liquid medium such as water, alcohol and mixture thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.