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. 05, 1999
Filed:
Mar. 26, 1997
Applicant:
Inventors:
Richard Witzko, 83512 Wasserburg, DE;
Wolfgang Burger, 81825 Munchen, DE;
Gudrun Petzold, 01257 Dresden, DE;
Klaus Lunkwitz, 01187 Dresden, DE;
Heide-Marie Buchhammer, 01237 Dresden, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; B01D / ; D06M / ;
U.S. Cl.
CPC ...
442 88 ; 811556 ; 811565 ; 811566 ; 8181 ; 8196 ; 428375 ; 428378 ; 428409 ; 428420 ; 442 89 ; 442 92 ;
Abstract
The invention concerns a thin film of a permanent hydrophobic and optionally oleophobic finish for polymer surfaces. The film is formed from at least one layer of a water-soluble polycation and cationic synthetic resin. For further improvement of the oleophobic and permanent hydrophobic properties the film can additionally contain a long-chain surfactant or an alkyl-substituted polyanion.