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    • 5. 发明授权
    • Pigment dispersions containing dispersants prepared by controlled radical polymerization having hydrophilic and hydrophobic segments
    • 含有通过具有亲水和疏水链段的受控自由基聚合制备的分散剂的颜料分散体
    • US06642301B2
    • 2003-11-04
    • US10217621
    • 2002-08-13
    • Daniela WhiteSimion CocaJames B. O'Dwyer
    • Daniela WhiteSimion CocaJames B. O'Dwyer
    • C08J3100
    • C09D17/001C09B67/009
    • A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, and has polymer chain structure represented by the following general formula I, &phgr;-(G)p-(E)s-T  I In general formula I, G is a residue of at least one radically polymerizable ethylenically unsaturated monomer; E is a hydrophilic residue of at least one radically polymerizable ethylenically unsaturated monomer; G and E are different from one another; &phgr; is a hydrophobic residue of or derived from the initiator, and is free of said radically transferable group; T is or is derived from the radically transferable group of the initiator; p and s represent average numbers of residues occurring in a block of residues; p and s are each individually selected such that the pigment dispersant has a number average molecular weight of at least 250.
    • 描述了包含颜料,选自水和水与至少一种有机溶剂的混合物的水性载体和颜料分散剂的颜料分散体。 颜料分散剂是通过控制自由基聚合制备的,例如原子转移自由基聚合,并具有由以下通式I表示的聚合物链结构。通式I中,G是至少一个可自由基聚合的烯属不饱和单体的残基; E是至少一种可自由基聚合的烯属不饱和单体的亲水性残基; G和E是不同的; phi是引发剂的疏水性残基或衍生自引发剂,并且不含所述可自由基转移基团; T衍生自引发剂的可自由转移基团; p和s表示残基块中发生的残基的平均数; p和s各自独立选择,使得颜料分散剂的数均分子量至少为250。
    • 7. 发明授权
    • Atom or group transfer radical polymerization
    • 原子或基团转移自由基聚合
    • US06538091B1
    • 2003-03-25
    • US09018554
    • 1998-02-04
    • Krzysztof MatyjaszewskiScott G. GaynorSimion Coca
    • Krzysztof MatyjaszewskiScott G. GaynorSimion Coca
    • C08F12018
    • C08F271/02C08F4/00C08F4/40C08F110/10C08F257/02C08F265/00C08F265/04C08F291/00C08F293/005C08F2438/01
    • Improved processes have been developed for atom (or group) transfer radical polymerization (ATRP). In one improvement, the ATRP process involves polymerizing in the presence of a (partially) free radical-deactivating amount of the corresponding reduced or oxidized transition metal compound. In a further improvement, the ATRP process involves polymerizing in a homogeneous system or in the presence of a solubilized initiating/catalytic system. The present invention also concerns end-functional, site-specific functional and telechelic homopolymers and copolymers; block, random, graft, alternating and tapered (or “gradient”) copolymers which may have certain properties or a certain novel structure; star, comb and “hyperbranched” polymers and copolymers; multi-functional hyperbranched, end-functional polymers; cross-linked polymers and gels; water-soluble polymers and hydrogels (e.g., a copolymer prepared by radical copolymerization of a water-soluble monomer and a divinyl monomer); and an ATRP process using water as a medium.
    • 已经开发了用于原子(或基团)转移自由基聚合(ATRP)的改进方法。 在一个改进中,ATRP方法包括在(部分)游离基失活量的相应还原或氧化的过渡金属化合物的存在下聚合。 在进一步的改进中,ATRP方法包括在均相体系中或在溶解的引发/催化体系存在下进行聚合。 本发明还涉及终端功能,位点特异性功能和遥爪均聚物和共聚物; 嵌段,随机,接枝,交替和渐缩​​(或“梯度”)共聚物,其可以具有某些性质或某种新颖结构; 星形,梳状和“超支化”聚合物和共聚物; 多功能超支化,末端官能聚合物; 交联聚合物和凝胶; 水溶性聚合物和水凝胶(例如,通过水溶性单体和二乙烯基单体的自由基共聚制备的共聚物); 和使用水作为介质的ATRP方法。
    • 8. 发明授权
    • Electrodepositable coating compositions comprising onium salt group-containing polymers prepared by atom transfer radical polymerization
    • 包含通过原子转移自由基聚合制备的含鎓盐基团的聚合物的可电沉积涂料组合物
    • US06365666B1
    • 2002-04-02
    • US09375012
    • 1999-08-16
    • Gregory J. McCollumLinda K. AndersonSimion Coca
    • Gregory J. McCollumLinda K. AndersonSimion Coca
    • C09D544
    • C09D5/4488C08F8/44C08F293/00C08F2438/01C08G18/0819C08L57/00Y10S524/901C08L2666/02
    • Disclosed are thermosetting compositions which are comprised of a resinous phase dispersed in an aqueous medium, the resinous phase comprising (a) an ungelled active hydrogen group-containing polymer which contains onium salt groups, the polymer having been prepared by atom transfer radical polymerization in the presence of an initiator having at least one radically transferable group, and (b) a curing agent having at least two functional groups which are reactive with the active hydrogen groups of (a). The active hydrogen group-containing polymers of the thermosetting compositions, which are prepared by atom transfer radical polymerization, have narrow molecular weight distributions and well-defined, specifically tailored polymer architecture which can provide enhanced crosslink density and dispersibility of the thermosetting compositions. Also disclosed is a method of electrocoating a conductive substrate using the thermosetting compositions of the invention, and a substrate coated by this method.
    • 公开了由分散在水性介质中的树脂相组成的热固性组合物,所述树脂相包含(a)含有鎓盐基团的未凝胶化含活性氢基团的聚合物,所述聚合物通过原子转移自由基聚合制备 存在具有至少一个可自由基转移基团的引发剂,和(b)具有至少两个与(a)的活性氢基团反应的官能团的固化剂。 通过原子转移自由基聚合制备的热固性组合物的含活性氢基团的聚合物具有窄的分子量分布和明确定义的专门定制的聚合物结构,其可以提供增强的热固性组合物的交联密度和分散性。 还公开了使用本发明的热固性组合物和通过该方法涂覆的基材的电导涂层的方法。