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:
May. 26, 1998
Filed:
Apr. 15, 1996
Applicant:
Inventors:
Ulrike Licht, Mannheim, DE;
Hermann Seyffer, Heidelberg, DE;
Jens Rieger, Ludwigshafen, DE;
Helmut Kaehs, Niederkirchen, DE;
Rainer Hummerich, Worms, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428 357 ; 4284231 ; 428346 ;
Abstract
Packaging films are coated with a polyurethane which bears hydrophilic groups which make the polyurethane water-dispersible and which has a melting point of from 20.degree. to 70.degree. C., with the enthalpy of fusion in this temperature range being at least 20 J/g.