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.:

US 6767646 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 27, 2004

Filed:

Sep. 23, 2002
Applicant:
Inventors:

Hermann Seyffer, Heidelberg, DE;

Titus Leman, Ludwigshafen, DE;

Peter Claassen, Ludwigshafen, DE;

Kai Olfermann, Kaiserslautern, DE;

Thomas Wirth, Freinsheim, DE;

Jürgen Schmidt-Thümmes, Neuhofen, DE;

Assignee:

BASF Aktiengesellschaft, Ludwigshafen, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/304 ; B32B 2/900 ;
U.S. Cl.
CPC ...
B32B 2/304 ; B32B 2/900 ;
Abstract

A process for impregnating base paper or fiber webs with an aqueous dispersion of a polymer of free-radically polymerizable compounds (monomers), which comprises from 0.1 to 5% by weight of the monomers being methacrylic acid.


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