Patent · US Active

Surface-modified hydrogels and hydrogel microparticles

US9574109B2 · kind B2 · utility

1Cited by

13References

18Claims

0Family size

Assignee

Dow Corning Corporation · US

Inventors

Dongchan Ahn · Midland, US
James Thompson · Sacramento, US

Key dates

Filing date	Feb 17, 2011
Grant date	Feb 21, 2017
Priority date	—
Expiry date	Feb 28, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/55
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Provided in various embodiments are surface-modified hydrogels and hydrogel microparticles, methods for their preparation, and uses thereof for delivery of personal care and healthcare active ingredients, and agricultural active ingredients. In some embodiments, such hydrogels and hydrogel microparticles comprise surface coatings that are resistant to solvent washing and can act as barriers for the migration of water and/or water-compatible alcohols and actives soluble therein.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.