Aqueous dispersion of (meth)acrylic polymer and polysilsesquioxane nano particles
US12103990B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 5, 2020 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jun 25, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D133/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous dispersion containing (meth)acrylate polymer particles and substituted silsesquioxane-based particles dispersed in an aqueous carrier, wherein: (a) the substituted silsesquioxane-based particles have an volume-average size of 5 nanometers or more and at the same time less than 500 nanometers as determined by dynamic light scattering; and (b) the substituted silsesquioxane-based particles are substituted only with one or more than one moiety selected from a group consisting of alkyl, aryl, hydroxyl, trace amounts of alkoxy and combinations thereof and contain 50 mole-percent or less hydroxyl substitution in the form silanol functionalities relative to moles of substituted silsesquioxane-based particle as determined by infrared spectroscopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.