Transcription of Triethoxy Caprylylsilane - Kobo-Home
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Triethoxy Caprylylsilane - Kobo-Home
Tr i e t h o x y Caprylylsilane T R E AT M E N T- 1 1 S. Triethoxycaprylylsilane is a very reactive the hydroxyl groups of the pigment surface. surface-treating agent, because the hydrolysis This reaction is thus especially suitable for of Si-O bond takes place readily in presence of treament of metal oxides. At the completion moisture to form silanol. of the reaction, all ethoxy groups are The caprylylsilyl group is then chemically bonded substituted and caprylylsilyl groups are to the pigment via a condensation reaction crosslinked to the pigments to form a very between the silanol group formed above and stable coating, even at low pH. H OC2H5 3 C2H5OH OH.. O + C2H5O Si CnH2n+1 HO Si CnH2n+1.. H OC2H5 OH Route 2. Route 1 OH OH. OH OH. CnH2n+1 CnH2n+1.
Silicone treated pigments disperse well in cyclomethicones. They have a very low surface tension and excellent hydrophobicity, but they sometimes have poor wettability in
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