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:
Jun. 30, 2015
Filed:
Dec. 14, 2011
Christophe Navarro, Bayonne, FR;
Stephane Girois, Norfolk, VA (US);
Elisabeth Bay, Hagetmau, FR;
Jean-claude Saint-martin, Escondeaux, FR;
Christophe Navarro, Bayonne, FR;
Stephane Girois, Norfolk, VA (US);
Elisabeth Bay, Hagetmau, FR;
Jean-Claude Saint-Martin, Escondeaux, FR;
Arkema France, Colombes, FR;
Abstract
The present invention relates to a process for producing impact modifiers, impact modified thermoplastic molding compositions and in particular impact modified polycarbonate or polycarbonate/polyester blends having improved resistance to degradation. More particularly the present invention relates to a process for producing polymeric impact modifiers with a core-shell structure made by a multistage process comprising a control and adjustment if necessary of the pH value before and during the recovery step.