D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
D01D 5/26 (2006.01) C08G 18/65 (2006.01) C08G 18/66 (2006.01) D01D 5/098 (2006.01) D01F 6/70 (2006.01) D04H 1/56 (2006.01)
Patent
CA 2066250
2066250 9201094 PCTABS00010 Disclosed is a melt-blowing process for producing a fiber of an extrudable polyurethane having a large amount of hard segment, which comprises supplying a polyurethane comprising the reaction product of: (a) an organic polyisocyanate; (b) an isocyanate-reactive material having an average functionality of at least 1.9, a glass transition temperature (Tg) of less than 20 ·C, and a molecular weight in the range of 500 to 20,000; and (c) at least one chain extender having a functionality from 2 to 3 and a molecular weight from 50 to 400; which reaction product has up to 25 percent by weight of soft segment derived from the organic polyisocyanate (a) and the isocyanate-reactive material (b) and at least 75 percent by weight of hard segment derived from the organic polyisocyanate (a) and the chain extender (c), in a molten form from at least one orifice of a nozzle (9) into a gas stream (10) supplied to an area adjacent to the orifice which attenuates the molten polymer into fibers. Such microfibers are particularly useful in the field of high temperature filtration, coalescing and insulation.
Jezic Zdravko P.
Smart & Biggar
The Dow Chemical Company
LandOfFree
Microfibers of rigid polyurethane having large amount of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microfibers of rigid polyurethane having large amount of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microfibers of rigid polyurethane having large amount of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1435336