| 摘要 |
A cpd. (I) contains in the molecule a hydrophobic component (A) and a hydrophilic component (B) covalently bonded together; (A) is a satd. or unsatd. 30-500C hydrocarbon group, and (B) contains a phosphate, phosphonate, sulphate, sulphonate or carboxymethyl anionic group. - Pref. component A is the polymer of a 2-6C monolefin, or the residue of a poly(isobutenyl) succinic anhydride (C) of mol.wt. 400-5000. I may be neutralised with ammonia or an inorganic or organic base.
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