METHOD FOR PRODUCING 1,3-PROPANE DIOL

Title:

METHOD FOR PRODUCING 1,3-PROPANE DIOL

Document Type and Number:

WIPO Patent Application WO/2004/099110

Kind Code:

A1

Abstract:

A method for producing 1,3-propane diol, characterized in that it comprises subjecting a crude 1,3-propane diol having a purity of 95 wt % or higher to a heating treatment in the presence of a base, and then distilling the resulting product for purification, to thereby provide a purified 1,3-propane diol as a distillate. The method provides a method for purification of 1,3-propane diol, which produces an 1,3-propane diol product being used for providing a polytrimethylene glycol exhibiting reduced discoloration.

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Inventors:

OKOSHI TORU (JP)
FUJITA NAOKO (JP)

Application Number:

PCT/JP2004/006422

Publication Date:

November 18, 2004

Filing Date:

May 06, 2004

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
OKOSHI TORU (JP)
FUJITA NAOKO (JP)

International Classes:

C07C29/80; C08G65/34; (IPC1-7): C07C29/80; C07C31/20; C08G65/34

Domestic Patent References:

WO2000007969A1

2000-02-17

Foreign References:

JPH11509828A	1999-08-31
JP2001031606A	2001-02-06
JPH07258129A	1995-10-09
JPS61123630A	1986-06-11

Attorney, Agent or Firm:

Oguri, Shohei (13th Floor ARK Mori Building, 12-32, Akasaka 1-chom, Minato-ku Tokyo, JP)

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