Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2008-09-23
2008-09-23
Tarzano, D. Lawrence (Department: 4174)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S510000
Reexamination Certificate
active
10620654
ABSTRACT:
A cellulosic product such as paper coating composition is disclosed comprising aqueous-based semi-crystalline vinyl acetate-ethylene polymer emulsions, containing crystalline ethylene segments, which are useful for imparting oil, grease, solvent, water, and moisture vapor resistance. The polymer emulsions are prepared via the direct aqueous-based free radical emulsion polymerization of ethylene with various other comonomers. The semi-crystalline aqueous-based polymer emulsions of this invention have a crystalline melting point and a crystalline heat of fusion ranging from 5 to 100 J/g. The semi-crystalline aqueous-based emulsion polymers of this invention can be used directly as a paper or paperboard coating for imparting oil, grease, solvent, water, and moisture vapor resistance. Further, the present invention provides a repulpable paper and paperboard.
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Bott Richard Henry
Daniels Christian Leonard
Halat John Joseph
Jones Ronald Bernal
Rabasco John Joseph
Air Products Polymers, L.P.
Freeman John D.
Tarzano D. Lawrence
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