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:
Nov. 17, 2015
Filed:
Feb. 23, 2011
Stephane Costeux, Midland, MI (US);
Lingbo Zhu, Midland, MI (US);
Hyun Jeon, Rosharon, TX (US);
Shana P. Bunker, Midland, MI (US);
Thomas H. Kalantar, Midland, MI (US);
Stephane Costeux, Midland, MI (US);
Lingbo Zhu, Midland, MI (US);
Hyun Jeon, Rosharon, TX (US);
Shana P. Bunker, Midland, MI (US);
Thomas H. Kalantar, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×10effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter.