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US 6,686,033 B1Granted
Waterborne composition exhibiting sound damping property at low and high frequencies
AssigneeH.B. Fuller Licensing & Financing, Inc.
InventorJohn M. Chacko
Life of this patent
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Abstract
It is disclosed a wateborne composition comprising styrene-acrylic latex having a glass transition temperature (Tg) of from about 0° C. to about 30° C., vinylidene chloride-containing polymer latex and at least one filler. The composition exhibits sound damping property at both low and high frequencies as well as chip resistance and abrasion resistance. The composition is effective for use in the transportation industry, the building industry, the aerospace industry and the appliance industry.
Claims24
A waterborne composition comprising
- a) from about 20 wt % to about 40 wt % of a styrene-acrylic latex having a glass transition temperature of from about 0° C. to about 30° C.;
- b) from about 5 wt % to about 20 wt % of a vinylidene chloride-containing polymer latex;
- and
- c) from about 20 wt % to about 60 wt % of a filler,
- wherein said composition exhibits a sound damping property as measured by a composite loss factor of from about 0.02 to about 0.30 at a frequency of from about 200 Hz to about 800 Hz at a temperature of from about −5° C. to about 55° C.
2 more elements
A waterborne composition comprising
- a) from about 20 wt % to about 40 wt % of a styrene-acrylic latex having a glass transition temperature of from about 0° C. to about 30° C.;
- b) from about 5 wt % to about 20 wt % of a vinylidene chloride-containing polymer latex;
- and
- c) from about 20 wt % to about 60 wt % of a filler;
- and
- d) from about 5 wt % to about 15 wt % hydrocarbon resin latex comprising aliphatic hydrocarbon resin lattices,
- wherein said composition exhibits a sound damping property as measured by a composite loss factor of from about 0.02 to about 0.30 at a frequency of from about 200 Hz to about 800 Hz at a temperature of from about −5° C. to about 55° C.;
- and wherein said aliphatic hydrocarbon resin lattices comprises rosins, rosin esters, and mixtures thereof.
5 more elements
Dependencies are inferred from the claim text.