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What is Dry-Spinning Process in Spandex Production about?

Dry-spinning process for spandex fibers involves a step-growth polymerization where macroglycol molecules react with isocyanates to form long polymer chains. A catalyst like diazobicyclo[2.2.2]octane is used to initiate the reaction, while other low molecular weight amines control the fiber molecular weight. Stabilizers like antioxidants, ultraviolet screeners, and compounds inhibiting discoloration are added to protect vulnerable spandex fibers from heat, light, atmospheric contaminants, and chlorine.

Author

tflgvo123

Language

EN