Process for preparing a polyurethane elastic fiber

Details Process for preparing a polyurethane elastic fiber Process for preparing a polyurethane elastic fiber

1999-05-19

2000-08-08

Sergent, Rabon

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

2641761, 26421123, 528 59, 528 65, 528 79, 528 80, 528 83, 528503, 528906, C08G 1810, C08G 1832, C08G 1842, C08G 1848, C08G 1866

Patent

active

061003603

ABSTRACT:
A polyurethane elastic fiber is prepared from a polyurethane prepolymer by reaction extruding the polyurethane prepolymer and a chain extender, preferably with twin-screw extruder, and melt spinning the resulting polyurethane elastomer from the extrusion. The polyurethane prepolymer is obtained by carrying out a pre-polymerization reaction of a polyester diol and a diisocyanate, wherein the polyester diol comprises two different types of polyol, the first type being poly(tetramethylene adipate) glycol or poly(.epsilon.-caprolactone) glycol and the second type being a reaction product of a diol and dicarboxylic acid having 36 carbon atoms.

REFERENCES:
patent: 3664979 (1972-05-01), Tanomura et al.
patent: 4791187 (1988-12-01), Suling et al.
patent: 4871818 (1989-10-01), Lodoen
patent: 5118780 (1992-06-01), Hirai et al.
patent: 5290905 (1994-03-01), Komiya et al.
patent: 5310852 (1994-05-01), Hirai et al.
patent: 5565270 (1996-10-01), Rehbold et al.
patent: 5606005 (1997-02-01), Oshita et al.
patent: 5688890 (1997-11-01), Ishiguro et al.

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