Process for preparing polymers and compositions thereof
US8513172B2 · kind B2 · utility
11Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2005 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jun 30, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a polymer, employing the steps of: (1) contacting a free radical initiator; a chain transfer agent containing a thiocarbonyl thio group and a free radical leaving group; and a radically polymerisable monomer, to form a polymer chain; and (2) contacting the polymer chain of step (1) with at least one of a polyvalent coupling agent, a polymerization inhibitor, a grafting acylating agent, an amine and an oil of lubricating viscosity. The invention further provides compositions and uses for the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.