Soundproofing Coatings, Method for the Production Thereof and Use of the Same
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United States of America Patent
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Issued Date -
Jan 1, 2009
app pub date -
Aug 24, 2004
filing date -
Aug 29, 2003
priority date (Note) -
Abandoned
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Abstract
The invention relates to a sound-absorbing coating for an elastic structure (1) made of at least two polymers, comprising at least one coating layer (2) closer to the elastic structure (1) and made of at least one polymer A and at least one coating layer (3) farther from the elastic structure (1) and made of at least one polymer B, the latter coating layer (3) being applied immediately on said at least one polymer A so as to form an integral composite effecting a loss factor in the range of from 0.01 to 0.6 in a temperature range of from -20.degree. C. to +80.degree. C. The invention also relates to a process for preparing such a coating and the use of such a coating for making sound-absorbing coatings, for example on automotive vehicles.
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