Process for production of polyester polyurethane elastomeric fib

Details Process for production of polyester polyurethane elastomeric fib Process for production of polyester polyurethane elastomeric fib

1988-11-04

1990-10-16

Bleutge, John C.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421114, 26421117, 264236, 264347, 528 26, 528 28, 528 38, D01F 600

Patent

active

049633104

ABSTRACT:
A process for the production of polyester polyurethane elastomeric fibers having improved humid aging resistance which comprises the steps of reacting a polyester diol with an excess molar amount of an organic diisocyanate to prepare a urethane prepolymer having terminal isocyanate group at both ends thereof; extending the chain of the prepolymer with a bifunctional active hydrogen compound and 0.5 to 10.0 mole % of a diaminosilyl compound based on the total amount of the bifunctional active hydrogen compound during or after preparation of the prepolymer to obtain a polyurethane; spinning the polyurethane into fiber; and crosslinking the polyurethane during or after spinning.

REFERENCES:
patent: 4508889 (1985-04-01), Noren et al.
patent: 4631329 (1986-12-01), Gornowicz et al.

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