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US 6,441,080 B1Granted
Repulpable chlorine free barrier coating for packaging material
AssigneeLe Groupe Recherche I.D. Inc.
InventorSerge Berube
Life of this patent
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Abstract
This invention relates to a chlorine free, wax free aqueous composition for providing a repulpable water vapor barrier coating for flexible packaging applications. The composition includes a tackifier resin, a polymer and enough water to provide dispersions of the tackifier resin and the polymer. It may also include a filler with a plate like structure.
Claims16
A composition for providing a repulpable chlorine free vapor barrier coating for flexible packaging material, which comprises
- a tackifier resin, a hydrophobic chlorine free polymer having a Tg between about −40° C. and 45° C. and a minimum film forming temperature which is substantially the same or above the Tg of the polymer and which is capable of bonding crystallized tackifier resin to a substrate, and
- water in an amount sufficient to provide aqueous dispersions of said tackifier resin and said hydrophobic chlorine free polymer.
A composition for providing a repulpable chlorine free vapor barrier coating for flexible packaging material, which comprises.
- tackifier resin:
- 5 to 90 weight percent (based on 55% solids) polymer dispersion:
- 49 to 10 weight percent (based on 50% solids) filler:
- 0 to 35 weight percent dispersing agent:
- 0 to 1.0 weight percent (based on 30% solids) thickener:
- 0 to 0.5 weight percent (based on 25% solids) defoamer:
- 0 to 0.06 weight percent buffer:
- 0 to 1.0 weight percent water:
- 0 to 30 weight percent.
6 more elements
Dependencies are inferred from the claim text.