| 摘要 |
<p>A composition is the reaction product of (1) a compound containing a poly(oxyalkylene)group and having at least two -OH groups; (2) a compound other than as defined in (1) which contains at least two reactive hydrogen atoms present as -OH, -NH2 or -NHR; (3) a carboxylic acid containing at least two carboxylic acid groups or an anhydride or chloride thereof; and (4) a mono-carboxylic acid, a mono-hydroxycompound, a secondary mono-amine or a hindered primary mono-amine; where components (2) and (3) may be replaced, at least partially, by a substituted carboxylic acid. The resulting composition is non-ionic and can be used to prepare a wide range of emulsions or dispersions of solids in liquids.</p> |
