Method for production of 3-cyano-3,5,5-trimethyl cyclohexanone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 12, 1993
Grant Date -
N/A
app pub date -
Jul 9, 1991
filing date -
Mar 5, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for the production of 3-cyano-3,5,5-trimethyl cyclohexanone by the reaction of isophorone with hydrogen cyanide in the presence of a quaternary ammonium salt or quaternary phosphonium salt and a basic compound as a catalyst in the form dissolved or dispersed in water or in the absence of water, which method comprises effecting said reaction by using said quaternary ammonium salt or quaternary phosphonium salt in an amount in the range of from 0.001 to 0.1 mol per mol of isophorone and said basic compound and in an amount in the range of from 0.5 to 3.0 mols per mol of said quaternary ammonium salt or quaternary phosphonium salt and, when water is used, using water in an amount in the range of 0.1 to 25% by weight based on the amount of isophorone and introducing hydrogen cyanidehydrocyanic acid at a ratio in the range of from 0.6 to 1.0 mol per mol of isophorone at a temperature in the range of from 90.degree. to 140.degree. C.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully