An adhesive composition that improves structural integrity and insulative properties when applied to a cellulosic substrate is provided. The adhesive composition includes a plurality of microspheres and an emulsion-based polymer that has (i) an elastic modulus greater than 0.5 MPa in the range tempe
An adhesive composition that improves structural integrity and insulative properties when applied to a cellulosic substrate is provided. The adhesive composition includes a plurality of microspheres and an emulsion-based polymer that has (i) an elastic modulus greater than 0.5 MPa in the range temperature range of 70° C. to 110° C.; (ii) an absolute log(E)/T slope of less than 0.05 in the range temperature range of 70° C. to 110° C.; and (iii) a tan d value less than 0.6 at 90° C.
대표청구항▼
1. An insulated package comprising: (a) a substrate; and(b) a waterborne-based adhesive comprising (1) a water-based polymer prepared by emulsion polymerization; (2) a plurality of expandable microspheres having a hydrocarbon core and a polyacrylonitrile shell; and (3) optionally, an additive;wherei
1. An insulated package comprising: (a) a substrate; and(b) a waterborne-based adhesive comprising (1) a water-based polymer prepared by emulsion polymerization; (2) a plurality of expandable microspheres having a hydrocarbon core and a polyacrylonitrile shell; and (3) optionally, an additive;wherein the water-based polymer is selected from the group consisting of emulsion-based polymer selected from the group consisting of vinyl acetate ethylene dispersion, polyvinyl acetate, polyvinyl acetate polyvinyl alcohol, dextrin stabilized polyvinyl acetate, polyvinyl acetate copolymers, vinyl acetate—ethylene copolymers, vinylacrylic, styrene acrylic, acrylic, styrene butyl rubber, polyurethane and mixtures thereof. 2. The insulated package of claim 1, wherein the expandable microspheres begin to expand at a temperature of about 80° C. to about 100° C. 3. The insulated package of claim 1, wherein the expandable microspheres have a maximum expansion temperature of about 120° C. to about 130° C. 4. The insulated package of claim 1, wherein the additive is selected from the group consisting of tackifiers, plasticizers, crosslinker, and mixtures thereof. 5. The insulated package of claim 1, wherein the crosslinker is selected from the group consisting of aluminum nitrate, zirconium acetate, ammonium zirconyl carbonate and mixtures thereof. 6. The insulated package of claim 1, further comprising a defoamer, preservative, surfactant, rheology modifier, filler, pigment, dye, stabilizer, polyvinyl alcohol, humectant, and mixtures thereof. 7. The insulated package of claim 1, wherein the substrate is a reduced weight basis substrate. 8. The insulated package of claim 1, wherein the substrate is a fiberboard, corrugated board, solid bleached boards, kraft paper or coated paper. 9. The insulated package of claim 1, which is a cup, food container, case, carton, bag, box, lids, envelope, wrap or clamshell. 10. The insulated package of claim 1, wherein the adhesive further comprises an accelerator that is a multivalent water-soluble salt. 11. The insulated package of claim 10, wherein the multivalent water-soluble salt is selected from the group consisting of aluminum nitrate, zirconium acetate, ammonium zirconyl carbonate and mixtures thereof.
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