The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2007
Filed:
Jun. 15, 2005
Iskender Yilgor, Istanbul, TR;
Emel Yilgor, Istanbul, TR;
Garth L. Wilkes, Blacksburg, VA (US);
Jignesh P. Sheth, Wilsonville, OR (US);
Iskender Yilgor, Istanbul, TR;
Emel Yilgor, Istanbul, TR;
Garth L. Wilkes, Blacksburg, VA (US);
Jignesh P. Sheth, Wilsonville, OR (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
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).