US 11,692,112 B2
Low temperature vibration damping pressure sensitive adhesives and constructions
Jason D. Clapper, Lino Lakes, MN (US); Arlin L. Weikel, Mansfield, PA (US); Thu-Van T. Tran, Maplewood, MN (US); Kevin M. Lewandowski, Inver Grove Heights, MN (US); David A. Gries, Indianapolis, IN (US); and Daniel J. Renninger, Lebanon, IN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Apr. 23, 2019, as Appl. No. 16/392,332.
Application 16/392,332 is a division of application No. 15/367,705, filed on Dec. 2, 2016, abandoned.
Application 15/367,705 is a continuation of application No. 14/369,316, abandoned, previously published as PCT/US2012/071650, filed on Dec. 26, 2012.
Claims priority of provisional application 61/675,536, filed on Jul. 25, 2012.
Claims priority of provisional application 61/581,374, filed on Dec. 29, 2011.
Prior Publication US 2019/0249044 A1, Aug. 15, 2019
Int. Cl. C09J 7/10 (2018.01); C09J 7/38 (2018.01); C08F 220/18 (2006.01); C09J 133/08 (2006.01); C08L 33/10 (2006.01); C08K 3/36 (2006.01); C08L 33/08 (2006.01)
CPC C09J 7/10 (2018.01) [C08F 220/1808 (2020.02); C08F 220/1818 (2020.02); C08K 3/36 (2013.01); C08L 33/08 (2013.01); C08L 33/10 (2013.01); C09J 7/385 (2018.01); C09J 133/08 (2013.01); C09J 2423/00 (2013.01); C09J 2433/00 (2013.01); C09J 2433/006 (2013.01); Y10T 428/2848 (2015.01); Y10T 428/2891 (2015.01); Y10T 428/31692 (2015.04); Y10T 428/31938 (2015.04)] 16 Claims
 
1. A viscoelastic construction comprising:
a) a viscoelastic layer comprising a copolymer of at least one monomer according to formula I:
CH2═CR1—COOR2  [I]
wherein R1 is H, CH3 or CH2CH3 and R2 is a branched alkyl group containing 12 to 32 carbon atoms, and at least one comonomer selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, acrylic esters, methacrylic esters, and ethacrylic esters, wherein the at least one monomer according to formula I is present in an amount ranging from 75% to 99% by weight relative to the overall weight of the copolymer and further wherein the viscoelastic layer does not include any adhesion-enhancing particulate materials; bound to
b) at least one PSA layer comprising a pressure sensitive adhesive,
wherein the viscoelastic layer exhibits a tan delta of greater than 0.5 as measured by Dynamic Mechanical Analysis at −55° C. and 10 Hz.