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:
Mar. 19, 2013
Filed:
Nov. 02, 2009
Karlheinz Hausmann, Auvernier, CH;
Richard Allen Hayes, Beaumont, TX (US);
Steven C. Pesek, Orange, TX (US);
W Alexander Shaffer, Orange, TX (US);
Charles Anthony Smith, Vienna, WV (US);
Karlheinz Hausmann, Auvernier, CH;
Richard Allen Hayes, Beaumont, TX (US);
Steven C. Pesek, Orange, TX (US);
W Alexander Shaffer, Orange, TX (US);
Charles Anthony Smith, Vienna, WV (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
An ionomer composition comprises an ionomer that is the neutralized product of a precursor acid copolymer. The precursor acid copolymer comprises copolymerized units of an α-olefin having 2 to 10 carbon atoms and about 20 to about 30 wt %, based on the total weight of the precursor acid copolymer, of copolymerized units of an α,β-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms; a melt flow rate of about 10 to about 4000 g/10 min; and, when neutralized to a level of about 40% to about 90% and when comprising counterions that consist essentially of sodium cations, the precursor acid copolymer produces a sodium ionomer that has a melt flow rate of about 0.7 to about 25 g/10 min and a freeze enthalpy that is not detectable or that is less than about 3.0 j/g. Further provided are articles comprising the ionomer composition.