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:
Jun. 14, 1988
Filed:
Feb. 19, 1986
Applicant:
Inventors:
Hartmut Hensel, Schlangenbad, DE;
Hermann Dallmann, Wiesbaden, DE;
Werner Schaefer, Hofheim-Diedenbergen, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B28B / ; C06G / ;
U.S. Cl.
CPC ...
428323 ; 26417719 ; 2641772 ; 26421112 ; 264212 ; 428480 ; 528272 ; 5283082 ;
Abstract
A biaxially oriented and heat set film having improved abrasion resistance is described, whose distinguishing characteristics are that it has a density of more than 1.38 g/cm.sup.3 and that the following relationship exists between the orientation birefringence (.DELTA.n), the reduced specific viscosity (RSV), and the temper peak (Tp) of the film: