Use of copolymers with a composition gradient as stabilizers in emulsion free-radical polymerization
US8389637B2 · kind B2 · utility
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6References
34Claims
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Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Dec 29, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/1804
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention describes the use of copolymers with a composition gradient as sole stabilizer in emulsion free-radical polymerization. The copolymers of the invention are prepared via controlled free-radical polymerization and comprise at least one hydrophilic monomer such as acrylic acid and at least one hydrophobic monomer such as styrene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.