Moisture curable adhesive compositions
AssigneeDow Global Technologies LLC
InventorsBindu Krishnan, Qiuyun Xu, Leonardo C. Lopez
Life of this patent
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Abstract
An adhesive composition for use in flooring applications that includes a moisture curable polymer system; a calcium carbonate filler system having a first spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of 70 nanometer (nm) to 15 micrometer (μm) and a second spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of greater than 15 μm to 200 μm; a seed oil based fatty acid ester; and a silane based adhesion promoter. The adhesive composition provides low viscosity along with high shear resistance, which helps to retain the troweled ridges to enable maximum coverage.
Claims16
An adhesive composition, comprising:
- 20 to 50 weight percent (wt. %) of a moisture curable polymer system;
- 30 to 60 wt. % of a calcium carbonate filler system, the calcium carbonate system having:
- 5 to 50 wt. % of a first spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of 70 nanometer (nm) to 15 micrometer (μm);
- and
- 50 to 95 wt. % of a second spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of greater than 15 μm to 200 μm,
- wherein
- the wt. % of the first spheroidal particle and the second spheroidal particle are based on the total weight of the calcium carbonate filler system;
- 5 to 15 wt. % of a seed oil based fatty acid ester;
- and
- 0.1 to 10 wt. % of a silane based adhesion promoter, wherein the wt. % of the moisture curable polymer system, the calcium carbonate filler system, the seed oil based fatty acid ester and the silane based adhesion promoter are based on the total weight of the adhesive composition.
Dependencies are inferred from the claim text.