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:
Oct. 30, 1990
Filed:
Jun. 09, 1989
Applicant:
Inventors:
Sibylle Brosius, Mannheim, DE;
Helmut Barzynski, Bad Durkheim, DE;
Karl-Heinz Feuerherd, Hettenleidelheim, DE;
Wolfgang Schrott, Ludwigshafen, DE;
Bernhard Albert, Maxdorf, DE;
Michael Acker, Heidelberg, DE;
Klaus D Schomann, Ludwigshafen, DE;
Harald Kuppelmaier, Heidelberg, DE;
Michael Schmitt, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 369288 ; 346 / ; 3461351 ; 430270 ; 430945 ;
Abstract
An optical recording medium comprises a support material and a light-absorbing layer consisting essentially of a soluble mixture of a thermoplastic binder and at least one dye, wherein the thermoplastic binder is a phenol-aldehyde resin having an average molecular weight of greater than 300 which is soluble in an alcohol having a boiling point of less than 200.degree. C.