Patents Assigned to Ecolab
  • Patent number: 4657784
    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 solidify and form a continuous, nonporous encapsulating coating.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: April 14, 1987
    Assignee: Ecolab Inc.
    Inventor: Keith E. Olson