| 摘要 |
A sizing agent is provided which has at least a selfemulsifiable property, which is stable for long period of time as well being effective in low concentrations. The sizing agent has as its active ingredient one or more partial esters of alkenylsuccinic colds represented by the formula: and/or one or more salts thereof, wherein R represents an unsaturated hydrocarbyl group having at least 6 carbon atoms and R' represents an unsaturated hydrocarbyl group having 3 to 18 carbon atoms and an acid catalyst, said sizing agent being selfemulsifiable and stable in water for a long period of time. |
