| 摘要 |
A method for preparing a composition including silicate mineral particles that have colouring properties in which a talcose composition, including phyllosilicate mineral particles chosen from the group formed: from the particles having the chemical formula: ((SixGe1-x)4 M3O10 (OH)2, the particles having at least one interlayer space and having the chemical formula: (SixGe1-x)4 M3-ε O10 (OH)2, (M′m+)ε′.nH2O: —M having the formula Mgy(1)Coy(2)Zny(3)Cuy(4)Mny(5) Fey(6)Niy(7)Cry(8); —M′m+ designating at least one interlayer cation, the silicate mineral particles having a thickness of less than 100 nm and of which the largest dimension is less than 10 μπι, is brought into contact with a dye solution, including dye cations, of at least one element chosen from the transition metals, the lanthanides and the actinides. The composition obtained by this method is also described. |
| 主权项 |
1. A method for preparing a composition comprising silicate mineral particles which have coloring properties, wherein:
a composition, named a talcose composition, comprising phyllosilicate mineral particles is chosen from the group formed of:
particles formed of a stack of elementary lamellae and having the chemical formula:
(SixGe1-x)4M3O10(OH)2 M denoting at least one divalent metal and having the formula Mgy(1)Coy(2)Zny(3)Cuy(4)Mny(5)Fey(6)Niy(7)Cry(8); each y(i) representing a real number of the interval [0; 1], and such that∑i=18y(i)=1, x being a real number of the interval [0; 1],particles formed of a stack of elementary lamellae and having at least one interfoliar space between two consecutive elementary lamellae and having the chemical formula:
(SixGe1-x)4M3-εO10(OH)2, (M′m+)ε′.nH2OM denoting at least one divalent metal and having the formula Mgy(1)Coy(2)Zny(3)Cuy(4)Mny(5)Fey(6)Niy(7)Cry(8); each y(i) representing a real number of the interval [0; 1], and such that∑i=18y(i)=1, M′m+ denoting at least one cation, named an interfoliar cation, present in at least one interfoliar space of said elementary lamellae,x being a real number of the interval [0; 1],ε being a real number of the interval [0; 3[and denoting a cation deficit of said elementary lamellae,ε′ being a real number of the interval [0; 3[and denoting a proportion of interfoliar cation(s) M′m+ present in the interfoliar space(s) of said elementary lamellae,m being a real number of the interval [1; 3] and denoting a cation charge of the cation M′m+,n referring to a number of molecule(s) of water associated with said particles,said silicate mineral particles having a thickness of less than 100 nm and the largest dimension of which is less than 10 μm,
said talcose composition is brought into contact with a solution, named a coloring solution, comprising cations, named coloring cations, of at least one element chosen from the transition metals, the lanthanides and the actinides, in order to obtain a talcose composition comprising colored silicate mineral particles. |
