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:
Jun. 22, 1976
Filed:
Feb. 12, 1973
Applicant:
Inventors:
Henri Roques, Portet, Gar, FR;
Michel Roustan, Ramonville, FR;
Assignee:
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
252321 ; 252358 ; 252361 ;
Abstract
A method for breaking foams is disclosed which comprises passing the foam to be broken through a packing material which is chemically inert with respect to the foam and which consists essentially of glass, plastic or metal having a coating thereon of a compound of the formula CF.sub.3 --(CF.sub.2).sub.n --X, wherein n is a whole number between 3 and 9, X is a functional group such as C.sub.2 H.sub.4 --SO.sub.3 --C.sub.4 H.sub.9, said coating forming a stable composition with the packing material substrate.