Hydrocarbyl carboxybetaine and method for preventing hofmann elimination in alkaline environment
US10351524B2 · kind B2 · utility
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Key dates
| Filing date | Jun 29, 2016 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/25
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A Hydrocarbyl Carboxybetaine represented by Formula (1) is provided: wherein, n1≥0 and n2>0, A is a C1-C20 alkyl group when n1>0, and A is a single bond when n1=0. R1, R2, R3, and R4 are each independently selected from hydrogen atom, deuterium atom, C1-C20 alkyl group, C2-C20 alkenyl group and C2-C20 alkynyl group; X is selected from SH, SOCH3, SCH3, NH2, SiCl3, Si(OCH3)3, Si(OCH2CH3)3,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.