Patent ID: 11939498
Assignee: ROHM AND HAAS COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A laminate comprising:
a first substrate that is a biaxially oriented polypropylene (BOPP) film;
a second substrate that is a vacuum metallized casted polyethylene terephthalate polyester film (VMPET);
a third substrate that is a polyethylene (PE) film;
a composition consisting of
(a) a first component that is an aqueous mixture with its solid portion consisting of
(i) 0.1% to 10% of a polyol containing at least two hydroxyl groups and being selected from the group consisting of water dispersible polyether polyols, polyester polyols, polyether polyester polyols and mixtures thereof,
(ii) 3% to 30% of a rosin resin, and
(iii) from 65% to 96% of a polymer having from 23-45% residues of at least one styrene monomer, from 50-80% residues of at least one acrylic monomer having a Tg less than 0° C., and from 1.5% to 2.5% residues of (meth)acrylic acid; and

(b) a second component consisting of a water dispersible polyisocyanate, wherein the second component is present relative to the first component at a NCO/NCO-reactive group molar ratio of 1:1 to 8:1; wherein the composition bonds the first substrate to the second substrate; and
the composition bonds the second substrate to the third substrate.