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:
Aug. 01, 2017
Filed:
May. 01, 2015
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Jian Zhou, Mt. Vernon, IN (US);
Adel Bastawros, Mt. Vernon, IN (US);
Wei Feng, Shanghai, CN;
Zhi Wang, Shanghai, CN;
Yuan Zhou, Shanghai, CN;
SABIC GLOBAL TECHNOLOGIES, Bergen Op Zoom, NL;
Abstract
A coextruded multilayered thermoplastic article including: a first layer with a first surface texture, wherein the first layer comprises a first transparent thermoplastic polymer having a first stress optical coefficient (C) measured at 20° C. above the glass transition temperature of the first polymer; a second layer located comprising a second transparent thermoplastic polymer having a second stress optical coefficient (C) measured at 20° C. above the glass transition temperature of the second matrix; wherein a relation between the first stress optical coefficient and the second stress optical coefficient is C>4(C) (Formula A) wherein the thickness of the first layer measured from the highest peaks of the first surface texture to the second side of the first layer is greater than 1.5 times Rz of the first surface texture but less than or equal to 75% of the total thickness of the article.