【発明の名称】酸無水物の調製方法

Title:

【発明の名称】酸無水物の調製方法

Document Type and Number:

Japanese Patent JPH0613496

Kind Code:

B2

Abstract:

Process for preparing acid anhydrides by passing a solution of this acid over an acidified clay.

Inventors:

MITSUSHERU ARA
MITSUSHERU GYUBERUMAN
JANNMITSUSHERU HOPA

Application Number:

JP29111688A

Publication Date:

February 23, 1994

Filing Date:

November 19, 1988

Export Citation:

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Assignee:

RHONE POULENC CHIMIE

International Classes:

B01J21/16; B01J37/30; C07B61/00; C07C51/00; C07C51/56; C07C55/10; C07C55/12; C07C57/13; C07D307/60; C07C61/09; C07C61/22; C07C63/16; C07C63/307; C07C67/00; C07D307/89; C07D309/32; C07D493/04; (IPC1-7): C07D307/60; B01J21/16; B01J37/30; C07C51/56; C07D307/89; C07D309/32; C07D493/04

Attorney, Agent or Firm:

Aoki Akira (3 outside)

Next Patent: LAMINATED HYBRID INTEGRATED CIRCUIT COMPONENT