Oxidation of dimercaptans to organic disulfide polymers
US5545714A · kind A · utility
3Cited by
5References
23Claims
0Family size
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Key dates
| Filing date | May 25, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | May 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing an organic disulfide polymer such as polyethylene disulfide which is used in batteries comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a mixture of a basic compound such as NaOH and an ethoxylated alcohol such as Union Carbide's TERGITOL.RTM. 15-S-7 having the formula of R.sup.2 O(CH.sub.2 CH.sub.2 O).sub.7 H as catalyst wherein the dimercaptan is present in excess amount to effect the preparation of the disulfide polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.