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Patent Searching and Data


Title:
PAPER SIZING COMPOSITION
Document Type and Number:
WIPO Patent Application WO2003106767
Kind Code:
A8
Abstract:
The invention relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). The invention provides a sizing composition which comprises an aqueous emulsion of an ASA wherein the ASA incorporates a maximum of 1% by weight (preferably a maximum of 0.5 % by weight) of polymeric residues.The composition may incorporate less than 0.5 % by weight of olefins. Paper sizing compositions in accordance with the invention provide enhanced resistance to penetration of the edges of paper and board by agents such as hot hydrogen peroxide and lactic acid.

Inventors:
SUNDBERG KENNETH (FI)
ROBERTS JOHN (GB)
ZETTER CLAES (FI)
PENG GUOMEI (GB)
Application Number:
PCT/GB2003/002534
Publication Date:
April 14, 2005
Filing Date:
June 12, 2003
Export Citation:
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Assignee:
CIBA SC HOLDING AG (CH)
SUNDBERG KENNETH (FI)
ROBERTS JOHN (GB)
ZETTER CLAES (FI)
PENG GUOMEI (GB)
International Classes:
A61L2/18; D21H21/16; D21H17/16; (IPC1-7): D21H21/16
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