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dc.date.accessioned2016-08-24T17:54:42Zen
dc.date.available2016-08-24T17:54:42Zen
dc.date.issued2007-08-28en
dc.identifier.urihttp://hdl.handle.net/10919/72568en
dc.description.abstractUsing novel synthetic techniques, siloxane-urea segmented copolymers are made. The copolymers advantageously contain a polyether interface, with controlled morphologies and properties. High molecular weight, high strength siloxane-urea copolymers with urea hard segment contents ranging from 5 to over 60% by weight may be prepared. Polymer properties that can independently be controlled include modulus (1.0 to 120 MPa), ultimate tensile strength (1.5 to 25 MPa), level of equilibrium water absorption (˜0 to 100% by weight) and refractive index (1.43 to 1.46).en
dc.format.mimetypeapplication/pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.titleSegmented urea and siloxane copolymers and their preparation methodsen
dc.typePatenten
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/60/622/072/0.pdfen
dc.date.accessed2016-08-19en
dc.type.dcmitypeTexten
dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorYilgor, Iskenderen
dc.contributor.inventorWilkes, Garth L.en
dc.contributor.inventorYilgor, Emel O.en
dc.contributor.inventorSheth, Jignesh P.en
dc.date.filed2005-06-15en
dc.identifier.applicationnumber11152844en
dc.subject.uspc525/474en
dc.subject.uspcother525/479en
dc.subject.uspcother528/38en
dc.subject.cpcC08G18/10en
dc.subject.cpcC08G18/61en
dc.subject.cpcC08G77/458en
dc.subject.cpcC08G18/3228en
dc.subject.cpcC08G18/50en
dc.type.patenttypeutilityen
dc.identifier.patentnumber7262260en


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