Process for preparing a reinforced and reactive thermoplastic composition, and this composition
US8784711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing a reinforced and reactive thermoplastic composition having a continuous phase which is based on at least one thermoplastic polymer and dispersed in which is a discontinuous phase based on at least one reactive reinforcing agent that may be immiscible with said at least one thermoplastic polymer, and also to a composition obtained by this process.A process according to the invention for preparing this thermoplastic composition in which said at least one reinforcing agent is selected from the group consisting of epoxy resins, polyorganosiloxanes having SiH functional group(s), diisocyanates or polyisocyanates and mixtures thereof, comprises a grafting, a branching and/or a crosslinking, that are carried out in situ, by reactive compounding of these phases with a shear rate greater than 102 s−1, of said at least one reinforcing agent onto the chain of said at least one thermoplastic polymer, so that said discontinuous phase is dispersed homogeneously in said continuous phase in the form of nodules having a number-average size of less than 5 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.