Scale inhibitors and related controlled release particles
US11905460B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jul 20, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 20, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Controlled release particles may include stimuli-responsive coatings on porous particles to allow for controlled release of a material in the pores of the porous particles. For example, a composition may comprise: a porous particle; a material in pores of the porous particle; and a coating bonded to a surface of the porous particle, wherein the coating comprises a multi-urethane compound capable of reversibly converting between a condensed state and an expanded state upon exposure to a stimuli.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.