Method to produce 1,1,2,3-tetrachloropropene with high yield
US9663425B2 · kind B2 · utility
2Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2015 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Mar 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/087
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method for the high yield production of HCC-1230xa from the known four step method, wherein the Step 3 crude product (crude HCC-240db) is used directly as the starting material in the Step 4 reaction—but only if the crude HCC-240db contains less than 0.5 wt % of impurities selected from the group consisting of HCC-250fb, HCC-1240za, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.