Method for the preparation of esters of carbonic acid
CA 1098535 A · Owner: Anic S.P.A. · Inventors: Romano, Ugo; Micucci, Lidio; Tesei, Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CASE 1001, METHOD FOR THE PREPARATION OF ESTERS OF CARBONIC ACID . -, ABSTRACT OF THE DISCLOSURE . - Carbonic acid esters are prepared by reacting the alcohol concerned with oxygen and carbon monoxide in the presence of a catalyst which is a salt of a metal belonging to the Groups IB, IIB and VIII of the Periodic Table: the least possible number of inorganic anions is desirable in order to reduce the acidity of the environment as far as possible. The salts of monovalent copper are preferred and high yields and selectivities are obtained.
Read the whole patent
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 March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 1998.
- 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
Timeline From CIPO dates
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.