Encapsulated bleach particles with at least two coating layers having different melting points
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United States of America Patent
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Mar 15, 1988
Issued Date -
N/A
app pub date -
Oct 31, 1986
filing date -
Mar 10, 1986
priority date (Note) -
Expired
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Abstract
High efficiency encapsulation of core particles, particularly halogen bleaches, by (i) encapsulating the core particle in at least two separate coats wherein the melting point of the inner or first coating material is below the melting point of the outer or second coating material, (ii) heating the thus encapsulated particle to a temperature between the melting points of the inner and outer coating materials in order to liquefy the inner coat, and (iii) allowing the liquid inner coat to solidfy and form a continuous, nonporous encapsulating coating.
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