Method for making a self-sealing composition
US9556329B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 20, 2009 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Mar 6, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing a self-sealing elastomer composition, said process comprising the following steps: a masterbatch, comprising at least one diene elastomer and more than 30 phr of a hydrocarbon resin, is firstly manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the “hot compounding” temperature which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything in the same mixer or in a different mixer, at a temperature or up to a temperature which is kept below 100° C., in order to obtain said self-sealing composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.