1,4-distyrylbenzene compounds and mixtures thereof with other 1,4-distyrybenzene compounds
US5152922A · kind A · utility
7Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Mar 15, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/65
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 1,4-distyrylbenzene compounds of the formula ##STR1## and mixtures thereof with compounds of the formulae ##STR2## and/or ##STR3## in which R.sub.1 is C.sub.1 -C.sub.4 -alkyl or phenyl, R.sub.2 is cyano, COOC.sub.1 -C.sub.4 -alkyl or chlorine and R.sub.3 is hydrogen or chlorine, agents for the fluorescent brightening of polyester fibers and a process for the preparation of the compounds of the formula 1 or mixtures thereof with compounds of the formulae 2 and/or 3 and also novel aldehydes which can be isolated as intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.