Invention Grant
- Patent Title: Water-clear aliphatic polyurethane pultrusion formulations and processes
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Application No.: US15245810Application Date: 2016-08-24
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Publication No.: US09896571B2Publication Date: 2018-02-20
- Inventor: Albert Magnotta , Stephen J. Harasin
- Applicant: Covestro LLC
- Applicant Address: US PA Pittsburgh
- Assignee: Covestro LLC
- Current Assignee: Covestro LLC
- Current Assignee Address: US PA Pittsburgh
- Agent Donald R. Palladino
- Main IPC: B29C70/00
- IPC: B29C70/00 ; C08G18/32 ; C08K7/14 ; C08K3/40 ; B29C47/00 ; C08G18/48 ; B29C70/52 ; C08G18/75 ; C08G18/24 ; C08G18/76 ; C08G18/78 ; C08G18/79 ; C08G18/80 ; C08J5/04 ; C08G18/20 ; B29K75/00 ; B29K309/08

Abstract:
Clear polyurethane fiber reinforced composites are produced by a pultrusion process with a polyurethane-forming system that includes: (a) a clear, aliphatic polyisocyanate having a viscosity at 25° C. of no more than 1000 centipoise, (b) a colorless polyol component comprising an amine-initiated polyol having a molecular weight of from about 150 to about 400 and an OH functionality greater than or equal to 3, and (c) a catalyst. These fiber-reinforced composites are characterized by both excellent weathering characteristics and excellent physical properties.
Public/Granted literature
- US20160362540A1 WATER-CLEAR ALIPHATIC POLYURETHANE PULTRUSION FORMULATIONS AND PROCESSES Public/Granted day:2016-12-15
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