Bisquaternary ammonium compounds of 2,2'-dimethyl-1,1'-binaphythyl and process for their preparation
US5599989A · kind A · utility
2Cited by
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23Claims
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Inventor
Key dates
| Filing date | May 24, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to bisquaternary ammonium compounds of the formula (I) ##STR1## and their preparation, where: R.sup.1, R.sup.2, R.sup.3 are, for example, identical or different (C.sub.1 -C.sub.12)alkyl which can also contain oxygen atoms or N--R.sup.4 moieties, where R.sup.4 is (C.sub.1 -C.sub.4)alkyl, in the chain and A is a chlorine, bromine, iodine atom or a OSO.sub.3 R.sup.5 radical, where R.sup.5 is (C.sub.1 -C.sub.4) alkyl or aryl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.