POLYURETHANE SOUND-INSULATING COMPOSITION AND METHOD OF MANUFACTURING SOUND-ABSORBING AND INSULATING MATERIAL FOR VEHICLES USING THE SAME
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
Jun 30, 2015
filing date -
Jul 7, 2014
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Abstract
A liquid polyurethane sound-insulating composition prepared by forming a urethane bond between a polyether polyol resin and modified methylene bisphenyl diisocyanate and uniformly dispersing an inorganic filler and a method of manufacturing a sound-absorbing and insulating material for vehicles, and therefore various types of sound-absorbing and insulating materials may be manufactured with no scraps by spray-coating a surface of a sound-absorbing material with the polyurethane sound-insulating composition, and sound-insulating performance with respect to a weight of the composition. Particularly, provided are a polyurethane sound-insulating composition which may be partially spray-coated on a part requiring sound-insulating performance, rather than being spray-coated on an entire surface of a sound-absorbing material, thereby minimizing an increase in weight and maximizing the sound-insulating performance, and a method of manufacturing a sound-absorbing and insulating material for vehicles.
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