Release Aid
AssigneeEcolab USA Inc.
InventorsJia Wu, Yulin Zhao, Xiao Zhang
Life of this patent
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Abstract
The present invention relates to a release aid that includes at least one succinic anhydride derivative for use in a papermaking process. For example, the release aid of the present invention is particularly useful for use in a paperweb creping process. The present invention also relates to a paperweb creping method that includes a release aid comprising at least one succinic anhydride.
Claims21
A release aid comprising an active ingredient comprising at least one succinic anhydride derivative, the succinic anhydride having the structural formula I or II or a salt thereof,
- wherein R is an alkyl moiety or an alkenyl moiety having from 8 to 25 carbon atoms.
A method of creping a paperweb, the method comprising:
- a) applying a release aid comprising an active ingredient comprising at least one succinic anhydride derivative to a rotating creping cylinder;
- b) pressing the paperweb against the creping cylinder for effective adhesion of the paperweb to the creping cylinder;
- and
- c) dislodging the paperweb from the creping cylinder with a doctor blade.
(canceled)
Dependencies are inferred from the claim text.