METHOD FOR PRODUCING HIGHLY PURE DITRIMETHYLOLPROPANE

Title:

METHOD FOR PRODUCING HIGHLY PURE DITRIMETHYLOLPROPANE

Document Type and Number:

Japanese Patent JP2002047224

Kind Code:

A

Abstract:

To provide a method for producing highly pure ditritnethylolpropane in the method for producing trimethylolpropane by the reaction of normal butyl aldehyde with formaldehyde in the presence of a basic catalyst, by which the highly pure ditrimethylolpropane can be recovered from distillation residues, after the trimethylolpropane is distilled and recovered from the reaction solution.

This method for producing the highly pure ditrimethylolpropane comprises first applying a crystallization operation using an organic solvent to the distillation residues, decomposing formal compounds in a distillate with an acid, and again applying a crystallization treatment to the product.

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Inventors:

NINOMIYA AKIYUKI
WATANABE TOSHIO
IWAMOTO ATSUSHI
MIYASHITA FUKUTAKE
WATANABE MASASHI

Application Number:

JP2000235584A

Publication Date:

February 12, 2002

Filing Date:

August 03, 2000

Export Citation:

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Assignee:

MITSUBISHI GAS CHEMICAL CO

International Classes:

C07C29/38; C07B61/00; C07C29/80; C07C31/22; C07C41/09; C07C41/40; C07C43/13; (IPC1-7): C07C29/38; C07C29/80; C07C31/22; C07C41/09; C07C41/40; C07C43/13

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