Patent US4007961A successfully refreshed from Google Patents.
EP0190609A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for the monoepoxidation of compounds containing two double bonds
Assignee: Enichem Sintesi SpA
•
Filing: 1986-01-22
•
Granted: —
•
Expires: 2006-01-22
Abstract
Abstract The invention relates to a process for the monoepoxidation of compounds containing two olephinic double bonds by means of hydrogen peroxide in the presence of a catalyst constituted by a Si-Ti synthetic zeolite (titanium-silicalite), wherein Ti and Si in the form of their oxides Ti0 2 and SiO 2 have a molar ratio in the zeolite corresponding to the formula with x being comprised within the range of from 0.0001 to 0.04, preferably of from 0.0055 to 0.036, possibly in the presence of at least one solvent of polar nature, by operating with the heterogeneous catalyst being dispersed in the liquid phase at a temperature of from 0°C to 150°C, and under a pressure comprised within the range of from 0.1 abs.atm to 20 abs.atm.
Inventors
- 👤 Federico Maspero
- 👤 Ugo Romano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 19:26
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; B; B01; B01J; B01J29/00; B01J29/89; C07D301/00; C07D301/02; C07D301/03; C07D301/12; C07D303/04; C07D303/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
Process for the monoepoxidation of compounds containing two olephinic double bonds by means of hydrogen peroxide, wherein the compound containing two double bonds has its double bonds separated by a number of carbon atoms, or of equivalent groups, lower than 8, characterized in that the reaction between the compound containing two double bonds and hydrogen peroxide at a concentration of from 3 to 70% by weight occurs by placing said two reactants in the presence of a catalyst constituted by a Si-Ti synthetic zeolite, wherein Ti and Si, in the form of their oxides TiO 2 and SiO 2 have a molar ratio in the zeolite corresponding to the formula x TiO (1-x)SiO 2 with x being comprised within the range of from 0.0001 to 0.04, possibly in the presence of at least one solvent of polar nature, at such temperatures, and under such pressures as to keep the whole reaction mass in the liquid phase.
Claim 2
Dependent Claim
156 words
Process for the monoepoxidation of compounds containing two olephinic double bonds by means of hydrogen peroxide, wherein the compound containing two double bonds has its double bonds separated by a number of carbon atoms, or of equivalent groups, lower than 8, characterized in that the reaction between the compound containing two double bonds and hydrogen peroxide at a concentration of from 3 to 70% by weight occurs by placing said two reactants in the presence of a catalyst constituted by a Si-Ti synthetic zeolite, wherein Ti and Si, in the form of their oxides TiO 2 and SiO 2 have a molar ratio in the zeolite corresponding to the formula x TiO (1-x)SiO 2 with x being comprised within the range of from 0.0001 to 0.04, possibly in the presence of at least one solvent of polar nature, at such temperatures, and under such pressures as to keep the whole reaction mass in the liquid phase.
Claim 3
Dependent Claim
19 words
Process according to claim 1, characterized in that x is comprised within the range of from 0.0055 to 0.036.
Claim 4
Dependent Claim
33 words
Process according to claim 1, characterized in that the solvent of polar nature is selected among alcohols, ketones, ethers, glycols, glycol-ethers with a number of carbon atoms lower than or equal to 6.
Claim 5
Dependent Claim
14 words
Process according to claim 3, wherein the alcohols are selected among methanol and tert.butanol.
Claim 6
Dependent Claim
10 words
Process according to claim 3, wherein the ketone is acetone.
Claim 7
Dependent Claim
10 words
Process according to claim 3, wherein the ether is (2)-methoxy-(1)-propanol.
Claim 8
Dependent Claim
33 words
Process according to claim 1, wherein the temperature is comprised within the range of from 0°C to 150°C, and the pressure is comprised within the range of from 0.1 to 20 abs. atm.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.