Process for polymerization in the presence of nanoparticles of a mineral filler for the attainment of polymer nanocomposites, and a polymer nanocomposite
US8329811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2008 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Apr 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A process for polymerization in the presence of nanoparticles of a mineral filler for obtaining polymer nanocomposites which includes the steps of (a) mixing a mineral filler with a swelling agent in a liquid state or near a critical state or supercritical state; (b) subjecting the swelling agent of the mixture obtained in step (a) to an endoenthalpic or isoenthalpic phase change, by altering the conditions of temperature and/or pressure; and (c) polymerizing a monomer, in a continuous or a batch process, in the presence of the mixture of step (b); wherein the swelling agent is a saturated or unsaturated hydrocarbon, a polar or vinylic organic compound, the same monomer used in the polymerization reaction or an inert compound present as a component of the reaction medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.