Title:
PRODUCTION OF DIMETHYLOLALKANAL
Document Type and Number:
Japanese Patent JPH11228478
Kind Code:
A
Abstract:
To remove high-boiling by-products and produce the subject compound useful as a raw material for polyurethane resins, etc., in high purity by condensing an alkanal or an α-alkylacrolein with formaldehyde and then extracting the resultant reactional product solution with a specific ether.
A ≥3C alkanal or ≥3C α-alkylacrolein having two hydrogen atoms on the carbon atom at the α-position is reacted with formaldehyde in the presence of a basic compound and water to provide a reactional product solution containing an α,α-dimethylolalkanol. The resultant reactional product solution is then extracted with a 5-9C ether to remove high-boiling by-products such as a trimer of the α,α-dimethylolalkanol as an ether solution.
Inventors:
TAKAHASHI KAZUNARI
KAWAKAMI TETSUGO
TSUBOI AKIO
CHIYOU SAKOU
KAWAKAMI TETSUGO
TSUBOI AKIO
CHIYOU SAKOU
Application Number:
JP3453598A
Publication Date:
August 24, 1999
Filing Date:
February 17, 1998
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
B01J23/02; C07B61/00; C07C45/72; C07C45/75; C07C47/19; (IPC1-7): C07C47/19; B01J23/02; C07C45/72
Attorney, Agent or Firm:
Hasegawa Moji