Title:
REDUCTION OF WATER AND POLAR IMPURITY IN IMIDE-ALKANE PERCARBOXYLIC ACID
Document Type and Number:
Japanese Patent JP3894511
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reducing water and polar impurities in an amide-alkane percarboxylic acid useful as a bleaching agent in detergent compositions without performing a drying treatment slow and dangerous from an industrial viewpoint through a process for heating a suspension until the perfect fusion of solid contents.
SOLUTION: This method for reducing water and polar impurities in an imide-alkane percarboxylic acid comprises heating an aqueous suspension of the imide-alkane percarboxylic acid, until solid contents in the suspension are perfectly melted, separating the organic phase from the aqueous phase, and recovering the organic phase containing the imide-alkane percarboxylic acid. The carboxylic acid is preferably a compound of formula I {A is a group of formula II, a group of formula III[(n) is 0, 1, 2], etc.; R1 is H, chlorine, bromine, a 1-20C alkyl, a 2-20C alkyl, an aryl, an alkylaryl; R2 is H, chlorine, bromine, SO3M (M is H, an alkali metal ion, ammonium ion, etc.,), etc.; X is a 1-19C alkylene, an arylene}, especially phthalimide-peracetic acid, 3-phthalimide- perpropionic acid, etc.
Inventors:
Cavallotti, Claudio
Nuchida, Gilberto
Claudio, Troglia
Nuchida, Gilberto
Claudio, Troglia
Application Number:
JP34220296A
Publication Date:
March 22, 2007
Filing Date:
December 20, 1996
Export Citation:
Assignee:
AUSIMONT S.p.A.
International Classes:
C07C409/24; C07D209/48; (IPC1-7): C07C409/24
Domestic Patent References:
| JP6087827A | ||||
| JP4211057A | ||||
| JP2076850A | ||||
| JP5294928A | ||||
| JP7002772A |
Attorney, Agent or Firm:
Keiichiro Saikyo
Minetarou Hirose
Tadaaki Kishimoto
Mikio Takeuchi
Minetarou Hirose
Tadaaki Kishimoto
Mikio Takeuchi
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