초록 ▼

The invention is a sprayable coating having noise vibration and harshness reduction or absorption properties. Such composition comprises from about 10 to about 60 percent of the flexible epoxy resin, from about 5 to about 40 percent by weight of a rigid epoxy resin formulation, and a curing agent fo

The invention is a sprayable coating having noise vibration and harshness reduction or absorption properties. Such composition comprises from about 10 to about 60 percent of the flexible epoxy resin, from about 5 to about 40 percent by weight of a rigid epoxy resin formulation, and a curing agent for the epoxy moieties of the two resins. In another embodiment, the invention is a method of coating a substrate to reduce the impact of noise vibration and harshness on the substrate or users of the substrate, which process comprises spraying the above defined composition on to a substrate and curing the resin on such substrate. In yet another embodiment the invention is a coated substrate described herein before having enhanced noise vibration and harshness properties.

대표청구항 ▼

[ What is claimed is:] [1.]1. A one-part sprayable epoxy composition useful in coating substrates comprising a mixture of one or more flexible epoxy resins in amounts of from about 10 to about 60 weight percent, one or more rigid epoxy resins in amounts of from about 5 to about 40 weight percent, on

[ What is claimed is:] [1.]1. A one-part sprayable epoxy composition useful in coating substrates comprising a mixture of one or more flexible epoxy resins in amounts of from about 10 to about 60 weight percent, one or more rigid epoxy resins in amounts of from about 5 to about 40 weight percent, one or more curing agents for the epoxy resin which cures the formulation at a temperature of from about 60.degree. C. to about 190.degree. C. in an amount of from about 0.5 to about 5 weight percent, from 2.1 to about 50 percent by weight of a spherical filler, and from about 5 percent by weight to about 40 percent by weight of a high aspect ratio filler based on the weight of the formulation wherein the sum of the total amounts of the components is 100 percent by weight; wherein the composition has a viscosity of about 150,000 centipoise or less, can be sprayed on a substrate and after cure the composition exhibits a composite loss factor 0.05 or greater as measured according to SAE J1637 with a 2 mm coating.