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. 29, 2016
Filed:
Feb. 03, 2014
Dow Global Technologies Llc, Midland, MI (US);
Teodora Doneva, Horgen, CH;
Mary Ann Jones, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present invention relates to a thermoplastic polyolefin elastomer composition in powder form comprising an olefin block copolymer and optionally a high density polyethylene (HDPE), said composition having a Shore A hardness greater than 75, a Tg less than −45° C., a distinct melting peak greater than 95° C., a zero shear viscosity equal to or less than 1,200 Pa-s and a particle size distribution wherein 85 percent of the particles fall between 150 microns to 420 microns and no particles are greater than 500 microns. Said composition demonstrates good pulverizing and flow characteristics at a temperature of 5° C. or less than the distinct melting peak of the olefin block copolymer. In another aspect, this invention relates to a process for preparing said thermoplastic polyolefin elastomer powder and applications for using said powder. In a further aspect, this invention relates to slush molding or rotational molding said thermoplastic polyolefin elastomer composition into skins, for example skins for automotive interior applications, sporting good applications, housing and building applications, packaging materials, covering materials, toys, hollow parts, and the like.