Process for removal of hydrogen sulfide from gaseous mixtures with severely sterically hindered secondary amino compounds
CA 1186868 A · Owner: Exxon Research And Engineering Company · Inventors: Savage, David W.; Stogryn, Eugene L.; Sartori, Guido
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The removal of H2S from a normally gaseous stream is accomplished with an absorbent solution containing a severely sterically hindered secondary amino alcohol having a cumulative -Es value (Taft's steric hindrance constant) greater than about 1.75. In a preferred embodiment the gaseous stream also contains CO2 and the H2S is selectively removed from the stream. The most preferred amino alcohol herein is tertiarybutylaminoethoxyethanol.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 14, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.