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:
Jan. 06, 1981
Filed:
Jul. 25, 1977
Applicant:
Inventors:
Heinz Hacker, Nuremberg, DE;
Ernst Helwig, Bad Neustadt, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
4284744 ; 427 58 ; 428480 ;
Abstract
The invention relates to agents for the surface treatment of flat insulating materials having a base of aromatic polyamides, and to a method for improving the surface characteristics of such flat insulating materials. According to the invention, such agents have the structure ##STR1## where at least one of the radicals R.sub.1 to R.sub.3 has a reactive group which can be incorporated into an impregnating resin system. Advantageously at least one of the radicals R.sub.1 to R.sub.3 has a reactive hydrogen atom or has an ethylenic or acetylenic unsaturated grouping.