Title:
METHOD FOR PRODUCING DITRIMETHYLOLPROPANE
Document Type and Number:
WIPO Patent Application WO/2013/005636
Kind Code:
A1
Abstract:
Provided is a method for producing di-TMP by reacting n-butyl aldehyde (NBD), formaldehyde, and a base, the method for producing di-TMP comprising a first step for obtaining a reaction solution containing trimethylolpropane (TMP), di-TMP, and 2-ethyl-2-propenal (ECR) by reacting NBD, diformaldehyde (1) and base (I); a second step for distillation and recovery of the ECR from the reaction mixture; and a third step for gradually promoting a reaction by which di-TMP is produced by adding the ECR recovered by evaporation to the reaction mixture after evaporation and recovering the ECR and adding at least one of base (II) and formaldehyde (2), wherein TMP is added during any one or any combination of steps 1 through 3.
Inventors:
WATANABE MASAFUMI (JP)
NISHIDA TAKERU (JP)
NISHIDA TAKERU (JP)
Application Number:
PCT/JP2012/066553
Publication Date:
January 10, 2013
Filing Date:
June 28, 2012
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
WATANABE MASAFUMI (JP)
NISHIDA TAKERU (JP)
WATANABE MASAFUMI (JP)
NISHIDA TAKERU (JP)
International Classes:
C07C41/06; C07C43/13
Domestic Patent References:
| WO2009057466A1 | 2009-05-07 | |||
| WO2009057466A1 | 2009-05-07 |
Foreign References:
| JPH08157401A | 1996-06-18 | |||
| JPH09268150A | 1997-10-14 | |||
| JP2005023067A | 2005-01-27 | |||
| JPS57139028A | 1982-08-27 | |||
| JPH08157401A | 1996-06-18 | |||
| JPH06501470A | 1994-02-17 | |||
| JPH09268150A | 1997-10-14 |
Other References:
See also references of EP 2730557A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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Claims: