Polyol-epoxide polymers for NVH damping applications

A method which comprises reducing noise, vibration, or harshness properties of an industrial or consumer product by incorporating therein an effective amount of a polyether- and polyester-epoxide polymer (PEEP) composition, wherein the PEEP composition comprises a one-component or two-component reaction product of:

• (a) a polyepoxide compound having an equivalent weight within the range of 115 to 250 g/eq.;
• and
• (b) a polyol composition comprising:
• (i) a polyester polyol having a hydroxyl value within the range of 28 to 400 mg KOH/g, an average hydroxyl functionality within the range of 1.5 to 4.0, and an acid number less than 5 mg KOH/g;
• and
• (ii) a polyether polyol having a hydroxyl value within the range of 28 to 800 mg KOH/g and an average hydroxyl functionality within the range of 1.8 to 8.0;
• wherein the ratio of epoxy equivalents of the polyepoxide compound to hydroxyl equivalents of the polyol composition is within the range of 0.5 to 4.0;
• wherein the PEEP composition has a glass-transition temperature as measured by differential scanning calorimetry within the range of −50° C. to 50° C.;
• and
• wherein the PEEP composition has a loss factor of at least 0.5 by ASTM D5992 over a temperature range of at least 15 Celsius degrees at one or more frequencies within the range of 0.1 to 10,000 Hz.