| 摘要 |
PCT No. PCT/JP97/04391 Sec. 371 Date Jul. 28, 1998 Sec. 102(e) Date Jul. 28, 1998 PCT Filed Dec. 2, 1997 PCT Pub. No. WO98/24864 PCT Pub. Date Jun. 11, 1998A surfactant composition defoaming rapidly, having high detergency and being excellent in handleability in a high-concentration region is provided, which comprises a compound (1) having an average molecular weight of 1,200 or less and water, with the proportion of the compound (1) to the sum total of the compound (1) and water being 50 wt. % or above and with the viscosity of the composition at 25 DEG C. being 1,000 cP or less. RO-(EO)x-(PO)y-(EO)x'--H(1) wherein R represents C12-C15 alkyl or the like; EO represents oxyethylene; PO represents oxypropylene; x and x' are each 1 or above; and y ranges from 0.5 to 6.0, provided (EO)x, (PO)y and (EO)x. are bonded to each other block in this order.
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