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:
Jul. 13, 1999
Filed:
May. 28, 1996
Michael P Greuel, White Bear Township, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A multi-layer composition comprises (a) a first layer comprising semi-crystalline copolymer comprising interpolymerized units derived from tetrafluoroethylene and allylic hydrogen-containing olefin monomer (e.g., propylene), wherein less than 10% of the total heat of fusion is attributable to a secondary melt-transition above 300.degree. C. as shown by the heating curve from Differential Scanning Calorimetry; and (b) a second layer comprising melt-processable polymer (e.g., polyethylene) which is both substantially thermally stable and capable of being melt-processed at temperatures below the decomposition temperature of the semi-crystalline copolymer. The multi-layer composition can be used to form shaped articles (e.g., films, sheets, tubing, coated wires, cable jacketing, or bottles) for use in a variety of applications.