申请人:BASF SE
公开号:US07902368B2
公开(公告)日:2011-03-08
Cationic 2,2,6,6-tetraalkylpiperidinyl alkoxyamines of, for example, formula (1a) and (1b) are useful as polymerization initiators/regulators in a controlled stable free radical polymerization process to produce intercalated and/or exfoliated nanoparticles from natural or synthetic clays. Compositions comprising improved nanocomposites produced by this process are useful as, for example, coatings, sealants, caulks, adhesives and plastic additives
wherein
Q1 is a direct bond or a —CH2— group
T1, T2, T3 and T4 are independently methyl or ethyl with the proviso that at least one is ethyl;
T7 and T8 are hydrogen or methyl;
T5 and T6 are hydrogen or
T5 and T6 together are a group ═O, ═NOH, ═NO-T9 or
T5 is hydrogen and T6 is —O-T9 or —NR9-T9
T9 is hydrogen, R9 or —C(O)—R9;
R9 is hydrogen, C1-C18alkyl, C3-C18alkenyl, C3-C18alkynyl, phenyl or C7-C9phenylalkyl unsubstituted or substituted by hydroxy, halogen or C1-C4alkoxy;
K1 and K2 are hydrogen, C1-C18alkyl, C5-C12cycloalkyl, phenyl or C7-C9phenylalkyl and
K3 is a group containing selected amine containing salts.
具有阳离子性的2,2,6,6-四烷基哌啶基烷氧胺,例如式(1a)和(1b),可用作聚合引发剂/调节剂,在受控稳定自由基聚合过程中产生自然或合成粘土的插层和/或剥离纳米颗粒。通过该过程生产的改良纳米复合材料组成物可用作例如涂料、密封剂、填缝剂、粘合剂和塑料添加剂,其中Q1是直接键或—CH2—基团,T1、T2、T3和T4分别独立地是甲基或乙基,但至少有一个是乙基;T7和T8是氢或甲基;T5和T6是氢或T5和T6一起是一个基团═O、═NOH、═NO-T9或T5是氢,T6是—O-T9或—NR9-T9,T9是氢、R9或—C(O)—R9;R9是氢、C1-C18烷基、C3-C18烯基、C3-C18炔基、苯基或未取代或取代的羟基、卤素或C1-C4烷氧基的C7-C9苯基烷基;K1和K2是氢、C1-C18烷基、C5-C12环烷基、苯基或C7-C9苯基烷基,K3是含有选择的胺盐的基团。