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. 16, 2002
Filed:
Jan. 06, 1999
Applicant:
Inventors:
Uwe Numrich, Weiterstadt, DE;
Bernhard Schaefer, Darmstadt, DE;
Assignee:
Roehm GmbH & Co. KG, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 2/700 ; B32B 2/730 ; B32B 3/130 ;
U.S. Cl.
CPC ...
B32B 2/700 ; B32B 2/730 ; B32B 3/130 ;
Abstract
A film comprising at least one layer of fluorine polymers and poly(meth)acrylates is prepared by (i) preparing a mixture of fluorine polymer and poly(meth)acrylate; and (ii) extruding the mixture maintained below its gel-forming temperature through the die of an extruder having a filter placed before entry of the mixture into the die, the temperature of the die being maintained higher than the temperature of the composition upon entry into the die but lower than the gel-forming temperature of the mixture, onto a roll having a temperature ≦100° C., thereby forming the at least one layer in the shape of a film.