Scouring agent composition for fiber
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Sep 1, 1998
filing date -
Sep 1, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a method for souring, using an scouring agent composition which has low-viscosity although being highly concentrated, which has excellent scouring property under highly alkaline conditions, and which has excellent biodegradability. That is, the present invention provides a method for scouring fiber, which comprises the step of treating the fiber with a scouring agent comprising (A) a nonionic surfactant having the formula (I): R.sub.1 --O--(EO).sub.l (PO).sub.m (EO).sub.n H (I) in which R.sub.1 is an alkyl or an alkenyl, being straight or branched, having 8 to 22 carbon atoms, EO is an oxyethylene unit, PO is an oxypropylene unit, l and n are an average mole number of added oxyethylene units, m is an average mole number of added oxypropylene units, l is a number of 1 to 12, m is a number of 1 to 4 and n is a number of 1 to 12, provided that (EO).sub.l, (PO).sub.m and (EO).sub.n are blocks connected in this order.
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