ALKENYL SUCCINIC ANHYDRIDE SIZE EMULSIFICATION WITH A NATURAL GUM FOR PAPER PRODUCTS

A natural gum is used to provide improved emulsification of alkenyl succinic anhydride (ASA) sizing agents for paper products. The natural gum can be nonionic, cationic, anionic, amphoteric, oxidized, derivatized, or modified. The preferred natural gum is from the family of galactomannan gums in whi...

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Bibliographic Details
Main Authors DOSTIE, DANIEL R, NOWICKI, ROMAN J
Format Patent
LanguageEnglish
French
Published 29.01.2008
Subjects
ADHESIVES
CHEMISTRY
DYES
IMPREGNATING OR COATING OF PAPER
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
POLISHES
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Summary:A natural gum is used to provide improved emulsification of alkenyl succinic anhydride (ASA) sizing agents for paper products. The natural gum can be nonionic, cationic, anionic, amphoteric, oxidized, derivatized, or modified. The preferred natural gum is from the family of galactomannan gums in which guar gum is a primary example. The alkenyl succinic anhydride (ASA) size emulsion formed with the natural gum improves stability and the film formed is evenly distributed , thereby promoting more uniform sizing of the paper product. The ratio of the ASA to natural gum in the emulsion ranges from 0.01:1 to 100:1, and preferably 0.1:1 to 20:1. The amount of ASA size is 1 lb./ton to 10 lbs./ton of finished paper product and preferably 2 lbs./ton to 8 lbs./ton. A surfactant may be used to further improve the stability of the emulsion.
Bibliography:Application Number: CA19992327293