Polymeric materials and articles manufactured there from
US11723875B2 · kind B2 · utility
0Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2019 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A water-soluble polyurethane derived from: polyethylene glycol, polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol polymer, polypropylene glycol-block-polyethylene glycol-block-polypropylene and mixtures thereof, 1,1′-Carbonyldiimidazole, polyamine and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.