Phenolic benzothiazole derivatives and their use as corrosion inhibitors
US4894091A · kind A · utility
7Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1987 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Aug 17, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula I ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meaning given in claim 1 are formed by thermal rearrangement of the isomers of formula V ##STR2## especially in the presence of basic catalysts. The compounds are corrosion inhibitors for organic materials, in particular coating materials and lubricants. In these substrates they also act as antioxidants and light-stabilizers and are very stable to heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.