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2 087 475

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C1

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IPC

(21) (22)

Application

94003075/04, 1994-01-26

(22)

Actual filing date

1994-01-26

(45)

Published

1997-08-20

(72)

Inventor

Sirotkina E.E.Fedushchak T.A.

(73)

Holder

Institut Khimii Nefti So Ran

METHOD OF PREPARING POLYMORPHOUS FORM OF COPPER PHTHALOCYANINE Russian patent published in 1997 - IPC

Abstract RU 2087475 C1

FIELD: synthesis of pigments, more particularly printing industry. SUBSTANCE: ultradispersive copper powder is dispersed in n-xylene and added to 1,3-diiminoisoindolenine at 1,3-diiminoisoindolenine to copper molar ratio of 4:1-8, mixture is maintained for 5-30 minutes at 90-110 C, and the desired product is recovered. EFFECT: more efficient method.

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RU 2 087 475 C1

Authors

Sirotkina E.E.

Fedushchak T.A.

Dates

1997-08-20—Published

1994-01-26—Filed

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