Continuous production process of tertiary alcohols by radical addition of secondary alcohols to alkenes

• US 5,831,134 A
• Filed: 10/25/1996
• Issued: 11/03/1998
• Est. Priority Date: 04/20/1993
• Status: Expired due to Fees

• Current Assignee: Peroxid-Chemie GmbH
• Original Assignee: Peroxid-Chemie GmbH
• Inventors: Rieth, deceased, Robert, Eckert, Maria, Rieth, heir, Emma Marianne Christine, Rieth, heir, Werner Eberhard Wilhelm, Gnann, Michael
• Primary Examiner(s): Shippen, Michael L.
• Application Number:
  US08/532,577
• Time in Patent Office: 739 Days
• Field of Search: 568/904, 568/905, 568/715, 568/834, 568/852, 568/822
• US Class Current: 568/822
• CPC Class Codes: C07C 29/44 increasing the number of carbon atoms by addition reactions, i.e. reactions involving at least one carbon-to-carbon double or triple bond C07C29/16 takes precedence
• CPC Class Codes: C07C 31/125 containing five to twenty-two carbon atoms
• CPC Class Codes: C07C 31/20 Dihydroxylic alcohols

Abstract

A process is disclosed for producing tertiary alcohols by radical addition of secondary alcohols to alkenes. The reaction is carried out as a continuous process in the presence of an organic peroxide as a radical initiator and during a mean contact time of the reaction mixture of up to a maximum of 1 hour.

Claims

1. Process for the production of tertiary alcohol by addition of one molecule of secondary alcohol to one molecule of alkene, wherein

the reaction is carried out as a continuous process in the presence of an organic peroxide as a radical initiator, the secondary alcohol being used in a ratio of 3 to 50 moles per mole of the alkene used, and with an average contact time of the reaction mixture of up to a maximum of 1 hour.

2. Process as claimed in claim 1, wherein the reaction is carried out with an average contact time of the reaction mixture of up to a maximum of 30 minutes.

3. Process as claimed in claim 1, wherein an alkene with 2 to 20 C atoms is used.

4. Process as claimed in claim 1, wherein a secondary alcohol with 3 to 14 C atoms is used.

5. Process as claimed in claim 1, wherein peroxycarboxylic acid esters or dialkyl peroxides are used as the radical initiator.

6. Process as claimed in claim 1, wherein the initiator is used in a ratio of 1 to 50 mole percent with respect to the alkene used.

7. Process as claimed in claim 1, wherein the reaction is carried out at a temperature of 50 to 240°

C. and under normal pressure or increased pressure.

8. Process as claimed in claim 1;

wherein the reaction is carried out in a tube reactor under increased pressure.

9. Process as claimed in claim 1, wherein after carrying out the reaction the product is separated from the reaction mixture and non-reacted secondary alcohol is fed back into the reaction mixture.