Disclosed is an elastic nonwoven web containing a coherent matrix of fibers formed from an extrudable blend composed of an elastomeric A-B-A-B tetrablock copolymer where A is a thermoplastic polymer block and where B is an isoprene monomer unit hydrogenated to substantially a poly(ethylene-propylene)...http://www.google.se/patents/US5332613?utm_source=gb-gplus-sharePatent US5332613 - High performance elastomeric nonwoven fibrous webs
