Invention Grant
- Patent Title: Low haze thermoplastic polyurethane using co-chain extenders
- Patent Title (中): 低雾度热塑性聚氨酯,使用共扩链剂
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Application No.: US12085612Application Date: 2006-11-17
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Publication No.: US08357768B2Publication Date: 2013-01-22
- Inventor: Hani Farah , Francisco Lerma, Jr.
- Applicant: Hani Farah , Francisco Lerma, Jr.
- Agent Christopher P. Demas
- International Application: PCT/US2006/044545 WO 20061117
- International Announcement: WO2008/057101 WO 20080515
- Main IPC: C08G18/32
- IPC: C08G18/32 ; C08G18/42 ; C08G18/76

Abstract:
The present invention is a low haze thermoplastic polyurethane (TPU) comprising structural units of a diisocyanate; a diol and three different chain extenders (butanediol chain extender; a different linear diol co-chain-extender and a cyclic co-chain-ex-tender). The TPU has good combinations of light transmission and clarity, low temperature flexibility, and high moisture vapor transition rates compared to other commercial or known TPUs. The preferred composition is a TPU that is based on polycaprolactone as diol, MDI as the diisocyanate monomer, butanediol chain extender, 1,3 propanediol linear chain co-extender and cyclohexanedimethanol cyclic chain co-extenders, and has good clarity and tensile strength.
Public/Granted literature
- US20090104449A1 Low Haze Thermoplastic Polyurethane Using Co-Chain Extenders Public/Granted day:2009-04-23
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