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US 8,840,759 B2Granted
Method of using aldehyde-functionalized polymers to increase papermachine performance and enhance sizing
AssigneeEcolab USA Inc.
InventorsBradley J. Benz, William C. Johnson, Mei Liu, Shawnee Wilson, Mark Grimm, Michael R. St. John
Life of this patent
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Abstract
Disclosed herein are compositions and methods to increase paper machine performance and enhance sizing. The compositions include a sizing agent, an emulsifier, and an aqueous component. The emulsifier may be an aldehyde-functionalized polymer.
Claims29
A sizing emulsion, comprising:
- a) a sizing agent selected from the group consisting of an alkyl ketene dimer (“AKD”) and an alkenyl succinic anhydride (ASA);
- b) an emulsifier selected from the group consisting of:
- glyoxalated poly(DADMAC)/AcAm polymer having a 5 mole % DADMAC monomer content;
- glyoxalated poly(DADMAC)/AcAm polymer having a 5 mole % DADMAC monomer content and further comprising MgSO4.7H2O;
- glyoxalated poly(DADMAC)/AcAm polymer having a 12 mole % DADMAC monomer content;
- and
- glyoxalated poly(DADMAC)/AcAm polymer having a 12 mole % DADMAC monomer content and further comprising MgSO4.7H2O;
- and
- c) an aqueous component.
6 more elements
A method of enhancing sizing, the method comprising adding an effective amount of a sizing emulsion to a paper machine in a papermaking process, wherein the sizing emulsion comprises:
- a) a sizing agent selected from the group consisting of an alkyl ketene dimer (“AKD”) and an alkenyl succinic anhydride (ASA);
- b) an emulsifier selected from the group consisting of:
- glyoxalated poly(DADMAC)/AcAm polymer having a 5 mole % DADMAC monomer content;
- glyoxalated poly(DADMAC)/AcAm polymer having a 5 mole % DADMAC monomer content and further comprising MgSO4.7H2O;
- glyoxalated poly(DADMAC)/AcAm polymer having a 12 mole % DADMAC monomer content;
- and
- glyoxalated poly(DADMAC)/AcAm polymer having a 12 mole % DADMAC monomer content and further comprising MgSO4.7H2O;
- and
- c) an aqueous component.
6 more elements
An emulsion comprising:
- a) a sizing agent;
- b) a glyoxalated poly(DADMAC)/AcAm polymer;
- and
- c) an aqueous component.
1 more element
Dependencies are inferred from the claim text.