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:
Jul. 17, 2018
Filed:
Sep. 22, 2015
Solvay Advanced Polymers, L.l.c., Alpharetta, GA (US);
Chantal Louis, Alpharetta, GA (US);
Solvay Advanced Polymers, L.L.C., Alpharetta, GA (US);
Abstract
A method for the preparation of a poly(ether ether ketone) (PEEK) includes: preparing the PEEK by aromatic nucleophilic substitution in the presence of: a) particulate sodium carbonate (NaCO), wherein said particulate sodium carbonate has a particle size distribution as follows: D≥45 μm and D≤250 μm and D≤710 μm, wherein said particle size distribution is measured by mechanical sieving in accordance with ASTM E 359-00 (reapproved 2005), wherein said measurement is based on the mechanical separation of various fractions on a series of superimposed sieves which are superimposed by descending order of opening mesh of 1000 μm, 500 μm, 250 μm, 180 μm, 125 μm, 90 μm, 63 μm, and 45 μm; and b) potassium carbonate (KCO) in an amount ranging from 0.001 to about 0.05 mol K/mol Na.
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