Process for obtaining hydrophobically modified emulsion polymers and polymers obtained thereby
US5569715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Jul 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F285/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for forming a hydrophobically modified emulsion, and the modified emulsion polymer obtained thereby. The emulsion polymer is formed by first combining hydrophobic polymeric compound and .alpha.,.beta.-ethylenically unsaturated monomer, to form a mixture and subjecting the mixture to high stress techniques to form surfactant stabilized particles of the hydrophobic polymer and monomers, in the aqueous phase. The .alpha.,.beta.-ethylenically unsaturated groups within the particles are co-polymerized to form a hydrophobically modified core polymer. Additional monomers including at least one .alpha.,.beta.-ethylenically unsaturated hydrophilic monomer are then added to the core polymer and polymerized by emulsion polymerization, to form a hydrophobically modified emulsion polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.