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Energy absorbing elastomers and composites

  • US 4,346,205 A
  • Filed: 05/19/1980
  • Issued: 08/24/1982
  • Est. Priority Date: 07/23/1976
  • Status: Expired due to Term
First Claim
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1. An elastomer comprising a flexible polyurethane of essentially linear structure containing unsatisfied hydroxyl groups, and having a compression set less than 15%, an elongation at break of at least 500%, and a recovery which is delayed after compression by at least 0.7 sec, said elastomer comprising the reaction product of substantially linear polyols based on polyalkylene glycol and having an average molecular weight in the range of 600 to 1200, and an aromatic diisocyanate.

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