High-performance overprint varnishes comprising composite SMA la

Details High-performance overprint varnishes comprising composite SMA la High-performance overprint varnishes comprising composite SMA la

1997-09-08

1999-05-11

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524460, C08L91/06

Patent

active

059028467

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%.

REFERENCES:
patent: 4861818 (1989-08-01), Timmerman
patent: 5373045 (1994-12-01), Smith
patent: 5646210 (1997-07-01), Timmerman

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