Method for manufacturing thiol compounds
US5821382A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In order to manufacture a thiol compound by causing reaction between an unsaturated compound and hydrogen sulfide, the unsaturated compound and the thiol compound being expressed by following formulas (1) and (2), respectively: EQU CH.sub.2 .dbd.CR.sup.1 --COOR.sup.2 (1) EQU HS--CH.sub.2 --CHR.sup.1 --COOR.sup.2 (2) where R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents a hydrogen atom or a hydrocarbon group with 1 to 18 carbon atoms, (i) at least one nitrogen containing compound which is selected from the group consisting of amide compounds each having an amide group without a substituent, amide compounds each having an amide group whose nitrogen atom has a substituent hydrocarbon group with 1 to 6 carbon atoms, urea compounds each having an ureylene group without a substituent, and urea compounds in each of which at least one of two nitrogen atoms (N, N') has a substituent hydrocarbon group with 1 to 6 carbon atoms, and (ii) either a polysulfide compound or sulfur, or the both, are made to coexist in a system of reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.