Vibration-damping constrained-layer constructions

Details Vibration-damping constrained-layer constructions Vibration-damping constrained-layer constructions

B - Operations, Transporting

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117/199, 154/86

B32B 15/08 (2006.01) B32B 27/30 (2006.01) G05D 19/00 (2006.01) G10K 11/168 (2006.01)

Patent

CA 1193922

Abstract of the Disclosure A constrained-layer construction comprising a stiff layer or substrate and a layer of a viscoelastic polymer which is the reaction product of a) 25 to 75 weight percent of an acryloyl or methacryloyl derivative of at least one oligomer, said oligomer having a glass transition temperature of less than 25°C and a molecular weight per oligomer of 600 to 20,000, and b) 75 to 25 weight percent of a copolymerizable monomer whose homopolymer has a glass transition temperature of at least 50°C, the copolymer being suitable for damping vibrations at relatively high temperatures, e.g., 50-150°C, is disclosed. Also included is a process for damping vibrations in component parts of devices used in automotive, aerospace, and computer industries.

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