Silicone-polycarbonate copolymer, sealants comprising same, and related methods
US11760841B2 · kind B2 · utility
0Cited by
58References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2019 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | May 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2190/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A silicone-polycarbonate copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polycarbonate moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0≤j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polycarbonate copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polycarbonate copolymer and a condensation-reaction catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.