| 摘要 |
PURPOSE:To provide the title copolymer with a relatively high MW and a desired form such as liq., gel, solid, etc., by copolymerizing a specified alkenyl ether and maleic anhydride as essential components at a specified molar ratio. CONSTITUTION:An alkenyl ether of formula I (wherein AO is a 3-18C oxyalkylene; R<1> is a 4-5C alkenyl; R<2> is a 4-24C hydrocarbon group or acyl; n is 1-1,000) (e.g. formula II or III), maleic anhydride and, if necessary, another monomer (e.g. acrylic acid) are copolymerized at a molar ratio of 5-60:40-70:0-40 to prepare an alkenyl ether-maleic anhydride copolymer. The obtd. copolymer is suitably used as such applications as a scale preventing agent, a chelating agent and a dispersing agent as well as a reactive coating, etc. |
