Process for preparing a triazine-based precursor, the precursor prepared thereby, a method for producing a micro-particulate complex using the precursor, and the micro-particulate complex produced thereby

A method for producing a micro-particulate complex containing a far infrared-emissive silica particle, comprising a step of subjecting a triazine-based precursor represented by Formula (a) and tetra-alkyl orthosilicate to hydrolysis and polycondensation,

• wherein
• each X is a nucleophilic atom independently selected from the group consisting of N, O, and S;
• Xs are different from each other;
• each R1 is independently selected from the group consisting of H and C1-C22 linear or branched unsubstituted alkyl;
• R2 represents C2-C4 alkylene;
• each R3 independently represents C1-C2 alkyl;
• and
• each n is independently 1 or 2,
• with the proviso that
• X is O or S and R1 is not H when n is 1, and
• X is N and at least one R1 is not H when n is 2.