Patent ID: 8378057

Claim:
A sound deadening structural member comprising a polyether ester block copolymer comprising: a hard segment of formula (1): and a soft segment of formula (2): wherein R 1 is an aromatic dicarboxylic acid unit, R 2 is (b) a 1,3-propylene and/or a 1,4-butylene unit, and {—(CH 2 ) 3 —O—} is a long chain diol unit consisting of polyoxytrimethylene glycol having a number average molecular weight of from 600 to 3000, wherein a weight % of the soft segment of formula (2) is from 20 to 58% of the total weight of the polyether ester block copolymer, and a durometer hardness (type D) of the polyether ester block copolymer, measured according to JIS K6253, is from 40 to 78.