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US 2014/0212589 A1Published application
Paper sizing using an agent containing uniformly bound octenyl succinic anhydride groups made by the reaction of octenyl succinic anhydride onto a dispersed waxy starch
AssigneeCorn Products Development, Inc.
InventorsRalph Trksak, Non Kam Foong
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Abstract
The application relates to an agent containing bound octenyl succinic anhydride groups made via the reaction of octenyl succinic anhydride onto a dispersed waxy starch, which provides significant improvements in paper porosity reduction, when added at a low level to a commodity type surface starch dispersion and used to surface size paper.
Claims9
A process comprising:
- a) slurrying a waxy starch and gelatinizing the slurry;
- b) optionally cooling the dispersion;
- c) optionally acidifying the optionally cooled dispersion and waiting until the optionally acidified dispersion reaches a funnel viscosity of from about 20 seconds to about 30 seconds;
- d) reacting the dispersion from step c) with octenylsuccinic anhydride;
- e) mixing the reacted dispersion with a dispersion or cook of converted starch;
- and
- f) applying the starch dispersion to paper.
4 more elements
Dependencies are inferred from the claim text.