Deinking of wastepaper with quaternized hydroxyethyl cellulose

United States of America Patent

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Feb 15, 1994
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app pub date
May 23, 1991
filing date
Nov 23, 1988

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Expired

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Abstract

The invention relates to a process for deinking wastepaper in the presence of at least partly water-soluble polymers and/or copolymers containing amino and/or ammonium groups. Two examples of appropriate polymers/copolymers are neutralized polyethyleneimine and quaternized hydroxyethyl cellulose.

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Patent Owner(s)

Patent Owner	Address
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN (HENKEL KGAA) A CORP OF THE FEDERAL REPUBLIC OF GERMANY	HENKELSTRASSE 67 POSTFACH 1100 D-4000 DUESSELDORF 1

International Classification(s)

D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Engelskirchen, Konrad	Meerbusch, DE	11	384
Fischer, Herbert	Duesseldorf, DE	83	1335
Hornfeck, Klaus	Mettmann, DE	15	137
Oberkobusch, Doris	Duesseldorf, DE	22	108
Schieferstein, Ludwig	Ratingen, DE	34	357

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Deinking of wastepaper with quaternized hydroxyethyl cellulose

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07689262

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PATENT NO	5286346
SERIAL NO	07689262
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07689262

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