Dual responsive block copolymer compositions
US9422387B2 · kind B2 · utility
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13References
17Claims
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Key dates
| Filing date | Mar 27, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Apr 21, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition includes a responsive block copolymer, the responsive block copolymer including at least one block A that is a triggerable copolymer, the triggerable copolymer including at least one lower critical solution temperature monomer and at least one charged monomer, wherein the triggerable copolymer block A is a dual trigger block configured to trigger on temperature and ionic strength, and wherein the responsive block copolymer micellizes or gels at a temperature between 28° C. and 37° C. and a salt concentration of about 0.9 wt %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.