MANUFACTURE OF PAPER AND PAPER BOARD - CIBA SPEC CHEM WATER TREAT LTD

Title:

MANUFACTURE OF PAPER AND PAPER BOARD

Document Type and Number:

WIPO Patent Application WO2003000985

Kind Code:

A8

Abstract:

Process for making paper or paper board comprising, forming an aqueous cellulosic suspension, adding a retention system to the cellulosic suspension, draining the suspension on a screen to form a sheet and drying the sheet, wherein the retention system comprises a swelling clay which has a TAPPI brightness of at least 70.

Inventors:

CHEN GORDON CHENG I (US)
WILLIAMS STEPHANIE CAINE (US)

Application Number:

PCT/EP2002/006721

Publication Date:

April 10, 2003

Filing Date:

June 18, 2002

Export Citation:

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Assignee:

CIBA SPEC CHEM WATER TREAT LTD (GB)
CHEN GORDON CHENG I (US)
WILLIAMS STEPHANIE CAINE (US)

International Classes:

D21H17/00; D21H17/67; D21H17/68; D21F11/00; D21H21/10; (IPC1-7): D21D23/04; D21H17/68; D21H21/10

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