Alkali-soluble resin (ASR) shell epoxy RDP exhibiting improved shelf stability
US9758667B2 · kind B2 · utility
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Key dates
| Filing date | Oct 1, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Jan 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/53
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides shelf stable redispersible multilayer polymer particles (RDPs) comprising a major proportion of epoxy resins, a methacrylic acid or anhydride containing alkali soluble polymer outer layer and a hydrophobic chain transfer agent or a high glass transition temperature colloidal stabilizer, such as poly(vinyl pyrrolidinone) or its copolymer, as well as to methods of making the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.