Block copolymers for gel compositions with improved efficiency
US11759758B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2019 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Jul 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/44384
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An oil gel compositions comprising (i) between 10 to 20 wt. % of a selectively hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives is described herein. In embodiments, the oil gel composition is characterized as having, a viscosity at 25° C. and 10/s between 100 (See claim 2) and 200 Pa-s, a cone penetration at 25° C. from 200 dmm to 600 dmm, a drop point from 100 to 250° C., and oil separation at 100° C. from 0% to 2%. In embodiments, the oil gel composition has a viscosity ratio of 25° C./100° C. from 4 to 20 at 10/s shear rate. The oil gel composition can be used in cables for post tensioning applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.