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:
May. 11, 1999
Filed:
Sep. 08, 1997
Applicant:
Inventors:
Bruno Feret, Levallois, FR;
Isabelle Betremieux, Beaumontel, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524276 ; 524460 ;
Abstract
High-performance overprint varnishes, well-suited for the protective coating of a wide variety of substrates, e.g., papers, cardboards and packaging materials, include a composite latex and characteristically a polyethylene wax emulsion, the composite latex comprising the copolymerizate of at least one hydrophobic monomer within an aqueous solution of a styrene/maleic anhydride resin, the styrene/maleic anhydride resin having a molecular weight ranging from 500 to 5,000 and an acid number of at most 500, and the amount by weight of the styrene/maleic anhydride resin in the copolymerizate ranging from 5% to 50%.