Controlled radical acrylic copolymer thickeners
US7691797B2 · kind B2 · utility
7Cited by
22References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to acrylic block copolymers synthesized by a controlled radical process, and their use as thickeners in oil-based compositions. The acrylic copolymers are especially useful as viscosity index improvers in lubricating oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.