Composition and methods and uses relating thereto
US11186792B2 · kind B2 · utility
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1References
23Claims
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Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Apr 29, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A quaternary ammonium salt of formula (I): (I) where in X is a linking group; Y is O, NH or NR1 wherein R1 is H or an optionally substituted hydrocarbyl group; Q+ is a moiety that includes a quaternary ammonium cation; A− is an anion; R2 is an optionally substituted alkylene group; R3 is hydrogen or an optionally substituted hydrocarbyl group; and n is 0 or a positive integer; provided that n is not 0 when R3 is hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.