The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2012
Filed:
Apr. 15, 2008
Susana Alcira Liberman, Porto Alegre-Rs, BR;
Dihogenes Adriano Pozzer, Porto Alegre-Rs, BR;
Fábio Fernandes Mota, Porto Alegre-Rs, BR;
Olavo Martins Junior, Porto Alegre-Rs, BR;
Manoel Lisboa Da Silva Neto, Porto Alegre-Rs, BR;
Susana Alcira Liberman, Porto Alegre-Rs, BR;
Dihogenes Adriano Pozzer, Porto Alegre-Rs, BR;
Fábio Fernandes Mota, Porto Alegre-Rs, BR;
Olavo Martins Junior, Porto Alegre-Rs, BR;
Manoel Lisboa Da Silva Neto, Porto Alegre-Rs, BR;
Braskem S.A., Camacari, BR;
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.