Enlarged granule starch stilt material for microencapsulated...

Details Enlarged granule starch stilt material for microencapsulated... Enlarged granule starch stilt material for microencapsulated...

C - Chemistry, Metallurgy

08

L

260/221.6

C08L 3/00 (2006.01) B41M 5/124 (2006.01) C08B 31/00 (2006.01)

Patent

CA 1134354

Case 75045 ENLARGED GRANULE STARCH STILT MATERIAL FOR MICROENCAPSULATED COATINGS ABSTRACT Enlarged granule starch useful as a protective stilt material in microencapsulated coatings to prevent premature rupture of the microcapsules. Starch granules are increased in size by alkali swelling of the granules in aqueous slurry, the enlarged granules are then crosslinked to aid in preserving the enlarged granular form through subsequent aqueous coating applications and thermal drying steps. A combination of hydrocyclone starch granule sizing and granule treatment employing alkali swelling and crosslinking substantially improves the yield of usable large granule stilt materials obtainable from prime grade wheat starch, and other bimodal granular starches such as barley and rye.

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