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    • 35. 发明申请
    • Use of 2-hydroxy-2-sulfinato acetic acid or the salts thereof as an initiator in w/o emulsions
    • 在w / o乳液中使用2-羟基-2-亚磺酰基乙酸或其盐作为引发剂
    • US20060229369A1
    • 2006-10-12
    • US10568777
    • 2004-08-20
    • Jurgen FrankGunter RenzEberhard SchuppBernhard SteinmetzKarl Bayer
    • Jurgen FrankGunter RenzEberhard SchuppBernhard SteinmetzKarl Bayer
    • B01D17/05
    • C08F4/40C08F2/32
    • Process for the preparation of homopolymers or copolymers by homopolymerization or copolymerization of free-radically polymerizable water-soluble and/or water-dispersible monomers, optionally with further comonomers and optionally with at least one crosslinker, in an inverse emulsion polymerization in the presence of at least one redox initiator pair comprising an oxidizing agent and a reducing agent, where the reducing agent is 2-hydroxy-2-sulfinatoacetic acid and/or salt thereof; homopolymers or copolymers preparable by the process according to the invention, water-in-oil emulsions which comprise at least one homopolymer or copolymer according to the invention, solid compositions which comprise at least one homopolymer or copolymer according to the invention, the use of 2-hydroxy-2-sulfinatoacetic acid and/or salt thereof as reducing agent in a process for the preparation of homopolymers or copolymers; the use of the water-in-oil emulsion comprising at least one homopolymer or copolymer according to the invention for the thickening of aqueous solutions, and the use of 2-hydroxy-2-sulfinatoacetic acid and/or salt thereof as reducing component of a redox initiator pair comprising an oxidizing agent and a reducing agent for avoiding induction times during inverse emulsion polymerization.
    • 通过在可溶自由基聚合的水溶性和/或水分散性单体,任选与其它共聚单体和任选与至少一种交联剂共聚合或共聚制备均聚物或共聚物的方法中,在反相乳液聚合中,在 包含氧化剂和还原剂的至少一种氧化还原引发剂对,其中所述还原剂是2-羟基-2-亚磺酰基乙酸和/或其盐; 可通过本发明方法制备的均聚物或共聚物,包含至少一种根据本发明的均聚物或共聚物的油包水乳液,包含至少一种根据本发明的均聚物或共聚物的固体组合物,使用2 - 羟基-2-亚磺酰乙酸和/或其盐作为制备均聚物或共聚物的方法中的还原剂; 使用包含至少一种本发明的均聚物或共聚物的油包水乳液用于水溶液的增稠,以及使用2-羟基-2-亚磺酰基乙酸和/或其盐作为 包含氧化剂和还原剂的氧化还原引发剂对,用于避免反相乳液聚合期间的诱导时间。