ABA-type block copolymers having a random block of hydrophobic and hydrophilic monomers and methods of making same
US6767968B1 · kind B1 · utility
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7References
26Claims
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Key dates
| Filing date | Oct 3, 2000 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Oct 3, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F297/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Block copolymers are prepared by living-type or semi-living type free radical polymerization, with said copolymers having at least one random block comprised of at least one hydrophobic monomer and at least one hydrophilic monomer. The selection of hydrophobic and hydrophilic monomers in the random block is determined by the relative hydrophobicity of the monomers to impart selected solubility or dispersability in water and/or alcohols of the overall block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.