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. 20, 1987
Filed:
Mar. 13, 1986
Applicant:
Inventors:
Manfred Eschwey, Dusseldorf, DE;
Rolf van Bonn, Duisburg, DE;
Assignee:
Mexxer Griesheim GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
264 401 ; 264 83 ; 264 85 ; 264340 ; 4272481 ; 4272551 ; 4272556 ; 525355 ; 525356 ;
Abstract
A process for preparing fluoridated surfaces of polymers includes exposing the surfaces for a period of time to the influence of a fluorine containing a treatment gas of defininte proportion for forming fluoridated hydrocarbons. A small portion of the treatment gas is drawn off during the exposure period and channeled via an activated aluminum oxide contact for carrying out the reaction Al.sub.2 O.sub.3 +3F.sub.2 .fwdarw.2AlF.sub.3 +3/20.sub.2 to determine the fluorine concentration in the residual gas by means of quantitative determination of the released oxygen and therewith the degree of fluorine coating of the surface.