公开(公告)号：US5643974A

公开(公告)日：1997-07-01

申请号：US596050

申请日：1996-02-06

申请人： Leslie Ainsley Simpson ,  Keith Robson ,  David Trevor Knight ,  Martin Alec Williamson

发明人： Leslie Ainsley Simpson ,  Keith Robson ,  David Trevor Knight ,  Martin Alec Williamson

IPC分类号： C09C1/36 ,  C08K3/00 ,  C08L31/02 ,  C09C1/00 ,  C09C3/10 ,  C09D7/12 ,  C09D17/00 ,  C09D127/06 ,  C08K3/20

CPC分类号： B82Y30/00 ,  C08K3/0033 ,  C09C1/0081 ,  C09C1/0084 ,  C09D127/06 ,  C09D7/1225 ,  C09D7/125 ,  C09D7/1266 ,  C09D7/1275 ,  C01P2002/60 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2004/82 ,  C01P2004/84 ,  C01P2006/60 ,  C08K3/22 ,  C08K9/02 ,  C08L27/06 ,  C08L31/02

摘要： A process for the production of a structured composite pigmentary material in the form of a dispersion comprises mixing an aqueous dispersion of inorganic pigmentary particles and an aqueous dispersion of polyvinyl chloride (PVC) particles. The inorganic pigment particles carry a positive surface charge and the PVC particles carry a negative surface charge and the particles in the composite are held in association as a result of these charges. The inorganic pigment particles and PVC particles are mixed in the presence of a surfactant system which provides both anionic and steric stabilisation. In one embodiment the surfactant system comprises a nonionic surfactant having an HLB value greater than 12 and at least 2% by weight of an anionic surfactant with respect to the weight of PVC particl In a second embodiment the surfactant system comprises at least 2% by weight (with respect to PVC) of one of more surfactants providing anionic and steric stabilisation and being ethylene oxide condensation products having a polyoxyethylene chain with an average length of at least 8 oxyethylene units. The product is useful in paints and provides improved opacity compared to conventional pigments and improved gloss compared to known structured composite pigments.

摘要翻译： 用于制备分散体形式的结构复合颜料材料的方法包括混合无机颜料颗粒的水分散体和聚氯乙烯（PVC）颗粒的水分散体。 无机颜料颗粒携带正表面电荷，并且PVC颗粒携带负表面电荷，并且复合材料中的颗粒由于这些电荷而保持结合。 无机颜料颗粒和PVC颗粒在提供阴离子和空间稳定化的表面活性剂体系的存在下混合。 在一个实施方案中，表面活性剂体系包含HLB值大于12的非离子表面活性剂和至少2重量％的阴离子表面活性剂相对于PVC颗粒的重量。在第二个实施方案中，表面活性剂体系包含至少2重量％ （相对于PVC），提供阴离子和空间稳定化的更多表面活性剂之一，并且是具有平均长度为至少8个氧化乙烯单元的聚氧乙烯链的环氧乙烷缩合产物。 与常规颜料相比，该产品在涂料中是有用的，并且与已知的结构复合颜料相比提供了改善的不透明度和改善的光泽度。