Methyltin mercaptide derivative and method for preparing the same
US9120832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2014 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | May 5, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/226
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound represented by formula I or II and a method for preparing the same. The method includes: a) adding isooctyl mercaptopropionate to a reactor, adding dropwise an aqueous solution of methyltin chloride, stirring and allowing for a complete reaction, and adding aqueous ammonia, an aqueous solution of sodium hydroxide, an aqueous solution of sodium bicarbonate, an aqueous solution of sodium carbonate, or a solution of an organic base to regulate the pH value of a resulting mixture from a starting value of between 2 and 8 to an end value of between 6 and 10 for a primary stage of esterification; and b) allowing a product obtained from step a) to proceed to a secondary stage of the esterification, allowing the product to stand until phases are separated, collecting and washing an organic phase using deionized water, allowing a resulting mixture to stand until phases are separated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.