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US 2002/0153505 A1Published application
Controlled release cooling additive composition
AssigneeDober Chemical Corporation
InventorsThomas J. Blakemore, Yu-Sen Chen
Life of this patent
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Abstract
A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.
Claims22
A controlled release additive composition for use in an aqueous system comprising:
- a core comprising an additive component;
- and
- a coating substantially surrounding the core, the coating being insoluble and including polymers made up of units from no more than two monomers.
Dependencies are inferred from the claim text.