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    • 8. 发明申请
    • Process of free-radical polymerization in aqueous disperasion for the preparation of polymers
    • 用于制备聚合物的水分散中的自由基聚合方法
    • US20090306302A1
    • 2009-12-10
    • US12308977
    • 2007-07-04
    • Patrick Lacroix-DesmazesJeff Tonnar
    • Patrick Lacroix-DesmazesJeff Tonnar
    • C08F271/02C08F4/04C08F4/34C08F265/02C08F279/02C08F265/04C08F261/06C08F273/00C08F275/00
    • C08F2/18C08F2/22C08F2/38C08F4/04C08F4/40C08F214/06C08F220/14C08F293/00C08F293/005C08F2220/1825
    • Process of free-radical polymerization in aqueous dispersion for the preparation of polymers, employing (A) at least one ethylenically unsaturated monomer, one of which is employed as the principal monomer and is selected from styrene and its derivatives, acrylic acid and its derivatives, methacrylic acid and its derivatives, dienes, vinyl esters, vinyl ethers, vinylic pyridine derivatives, vinylsulphonic acid and its derivatives, vinylphosphonic acid and its derivatives, and N-vinyl monomers, (B) at least one free-radical initiator selected from diazo compounds, peroxides and dialkyldiphenylalkanes, (C) molecular iodine, and (D) at least one oxidizing agent whose solubility in water is at least 10 g/l, of which at least one may be the one (B); said process comprising the steps whereby (1) at least one fraction of each of compounds (A), (B), (C) and (D) is introduced into a reactor, and (2) the contents of the reactor are reacted while introducing into the reactor the remainder, where appropriate, of each of compounds (A), (B), (C) and (D). Process of free-radical polymerization in aqueous dispersion for the preparation of block copolymers starting from polymers prepared by the abovementioned process.
    • 使用(A)至少一种烯键式不饱和单体,其中一种作为主要单体使用并选自苯乙烯及其衍生物,丙烯酸及其衍生物的方法,用于制备聚合物的水性分散体中的自由基聚合方法, 甲基丙烯酸及其衍生物,二烯,乙烯基酯,乙烯基醚,乙烯基吡啶衍生物,乙烯基磺酸及其衍生物,乙烯基膦酸及其衍生物和N-乙烯基单体,(B)至少一种选自重氮化合物的自由基引发剂 ,过氧化物和二烷基二苯基烷烃,(C)分子碘,和(D)至少一种在水中的溶解度至少为10g / l的氧化剂,其中至少一种可以是(B)。 所述方法包括以下步骤:(1)将化合物(A),(B),(C)和(D)中的每一种的至少一部分引入反应器中,和(2)使反应器的内容物反应,同时 在合适的情况下,将化合物(A),(B),(C)和(D)中的每一种引入反应器中。 在通过上述方法制备的聚合物开始制备嵌段共聚物的水分散体中的自由基聚合方法。