Multiblock copolymer and method of making thereof
US11072674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method of preparing a multiblock copolymer. This method comprises i) providing a block copolymer comprising at least one PA block and at least one PB block, where PA represents a polymer block comprising one or more units of monomer A and PB represents a polymer block comprising one or more units of monomer B, with monomers A and B being the same or different, where the block copolymer contains a chain transfer agent moiety (CTA); ii) providing a radically polymerizable monomer C; and iii) polymerizing the block copolymer with monomer C under conditions effective to achieve a number average degree of polymerization (Nn) for the multiblock copolymer of up to 100,000 without gelation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.