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公开(公告)号：EP1373413A1
公开(公告)日：2004-01-02
申请号：EP02718975.2
申请日：2002-02-14
CPC分类号： C08K9/02 , C01P2004/51 , C01P2004/62 , C01P2004/82 , C01P2006/60 , C01P2006/90 , C08K9/04 , C09C1/3623 , C09C1/3661 , C09C1/3692
摘要： The present invention relates to an improved titanium dioxide pigment that incorporate a dense silica coating and its process for manufacture. The pigment is preferably produced from a titania base from the chloride process in which the manufacturing process comprises the following steps in the order stated: (a) partial or substantial removal of salt from the oxidizer discharge; (b) addition of a dispersant; (c) milling to produce a highly dispersed, highly deagglomerated slurry, followed by dense silica surface treatment. Pigments prepared using the inventive process exhibit optics equivalent to high gloss, high opacity pigments and maintain the durability of the more conventional dense silica treated pigments.
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公开(公告)号：EP1373413B1
公开(公告)日：2009-12-30
申请号：EP02718975.2
申请日：2002-02-14
CPC分类号： C08K9/02 , C01P2004/51 , C01P2004/62 , C01P2004/82 , C01P2006/60 , C01P2006/90 , C08K9/04 , C09C1/3623 , C09C1/3661 , C09C1/3692
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公开(公告)号：EP1363976A1
公开(公告)日：2003-11-26
申请号：EP02728332.4
申请日：2002-02-04
CPC分类号： C01G23/00 , C01P2006/80 , C09C1/3661 , C09C1/3669 , C09C1/3684
摘要： The present invention provides a process for generating titanium dioxide pigments that have reduced moisture retention. By leaching oxidizer discharge and removing alumina containing compounds, one is able to generate a low volatile pigmentary bases. These low volatile pigmentary bases may be processed into finished low volatile pigments that may be combined with polymers to form polymer matrices. These pigments may be incorporated into polymer matrices at high temperatures without significant lacing.
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