Segmented urea and siloxane copolymers and their preparation methods
dc.contributor.assignee | Virginia Tech Intellectual Properties, Inc. | en |
dc.contributor.inventor | Yilgor, Iskender | en |
dc.contributor.inventor | Wilkes, Garth L. | en |
dc.contributor.inventor | Yilgor, Emel O. | en |
dc.contributor.inventor | Sheth, Jignesh P. | en |
dc.date.accessed | 2016-08-19 | en |
dc.date.accessioned | 2016-08-24T17:54:42Z | en |
dc.date.available | 2016-08-24T17:54:42Z | en |
dc.date.filed | 2005-06-15 | en |
dc.date.issued | 2007-08-28 | en |
dc.description.abstract | Using 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.mimetype | application/pdf | en |
dc.identifier.applicationnumber | 11152844 | en |
dc.identifier.patentnumber | 7262260 | en |
dc.identifier.uri | http://hdl.handle.net/10919/72568 | en |
dc.identifier.url | http://pimg-fpiw.uspto.gov/fdd/60/622/072/0.pdf | en |
dc.language.iso | en_US | en |
dc.publisher | United States Patent and Trademark Office | en |
dc.subject.cpc | C08G18/10 | en |
dc.subject.cpc | C08G18/61 | en |
dc.subject.cpc | C08G77/458 | en |
dc.subject.cpc | C08G18/3228 | en |
dc.subject.cpc | C08G18/50 | en |
dc.subject.uspc | 525/474 | en |
dc.subject.uspcother | 525/479 | en |
dc.subject.uspcother | 528/38 | en |
dc.title | Segmented urea and siloxane copolymers and their preparation methods | en |
dc.type | Patent | en |
dc.type.dcmitype | Text | en |
dc.type.patenttype | utility | en |
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