Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids
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United States of America Patent
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Apr 13, 1993
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N/A
app pub date -
Feb 28, 1990
filing date -
May 28, 1982
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Abstract
Sizing agents of which some are novel and which have at least one anionic or acidic group which is optionally in the form of a salt and at least two hydrophobic substituents which each have at least 5 carbon atoms, at least two of the most adjacent hydrophobic substituents being bonded to each other with a linking member which has at least 2 hetero atoms, are particularly suitable for use, together with commercially available polymeric, cationic retention aids, in a process for sizing paper or cardboard.
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