Spin finish for elastomer fibers

摘要

Spin finish having solid microparticles of a specified kind dispersed colloidally at a specified ratio in a dispersoid of a specified kind containing a smoothing agent component of a specified kind and a nitrogen-containing compound of a specified kind at specified ratios is for elastomer fibers such that packages having superior roll shape and unwinding property can be obtained in the production and fabrication process.

主权项

1. A spin finish for elastomer fibers, said spin finish comprising Component A, Component B and Component C;
wherein the component mass ratio between Component A and Component B is in the range of 100/0.01-100/5; wherein the component mass ratio between the sum of Component A and Component B and Component C is in the range of 100/0.01-100/10; wherein Component C is colloidally dispersed; wherein said spin finish has an average particle diameter in the range of 0.01-100 μm as measured by a specified measurement method; wherein Component A is a liquid containing a mineral oil in an amount of 70-100 mass % and silicone oil and/or ester oil in an amount of 0-30 mass % such that the total will be 100 mass %, and a viscosity of 2×10−6-100×10−6 m2/s at 25° C.; wherein Component B is a compound shown by Formula 1, where Formula 1 iswhere R1 is a residual group obtained by removing one hydrogen atom from an end of polyolefin with number averaged molecular weight of 500-5000, X1 is an alkylene group with 2-4 carbon atoms, Y1 is an alkyl group with 1-12 carbon atoms, an alkenyl group with 1-12 carbon atoms, a hydroxy alkyl group with 1-12 carbon atoms or hydrogen atom, and p is an integer 1-6;
wherein Component C is solid microparticles of one or more kinds selected from magnesium salt of aliphatic acid with 12-22 carbon atoms and calcium salt of aliphatic acid with 12-22 carbon atoms; and wherein said specified measurement method comprises the steps of: preparing a mixture by mixing polydimethyl siloxane and a mineral oil, both having viscosity of 10×10−6 m2/s at 25° C., at mass ratio of 1/1; diluting said spin finish for elastomer fibers with said mixture such that the concentration of Component C in said spin finish becomes 1000 mg/L to thereby obtain a diluted liquid; and measuring the volume standard average particle diameter of said diluted liquid by using a laser scattering particle size distribution analyzer.