| 摘要 |
A composition which can be applied to old asbestos before it is removed from old plant, apparatus of buildings is provided. The composition, which is in the form of a concentrate to be diluted with water, consists of: (a) from 1 to 20% by weight of a C12 to C20 secondary alcohol alkoxylate having a molecular weight in the range 500 to 700. (b) from 0.1 to 20% by weight of a polyoxyethylene-oxypropylene block copolymer having an average molecular weight in the range 1800 to 2000 and an ethylene oxide content of between 8 and 12% by weight. (c) from 10 to 60% by weight of a random polyoxyethylene oxypropylene glycol ether having an average molecular weight in the range 1500 to 3500 and an ethylene oxide content of between 40 and 75% by weight. (d) the balance, if required, being water.
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