Patent ID: 6531304
Filing Date: 2003-03-11
Classification: B03C,H01F,Y10S,Y10T

Abstract:
A process for preparing modified nanoscale transition metal or alloy colloids which are dispersible in hydrophobic and/or hydrophilic organic solvents and/or water, said process comprising:a) providing starting materials which have been prepared either by: i) reacting compounds of Periodic Table groups 6 to 11 transition metals with organoelement compounds of metals of Periodic Table groups 1, 2, 12 and 13; or ii) treating presynthesized nanoscale transition metal or alloy colloids with organoelement compounds of metals of Periodic Table groups 1, 2, 12 and 13; to form an organometallic protective shell containing said metal of Periodic Table groups 1, 2, 12 and 13; andb) reacting said starting materials, in situ or after isolation, with an organic or inorganic modifier which reacts with said protective shell protolytically or with the insertion of C/C, C/N or C/O multiple bonds or through Lewis, acid-base interactions, without degradation of the colloids.