| abstract |
(A) to (C): (A) (A) at least one organosilicon component consisting of units of the following formula (I); R a (OH) b (R 1 O) c SiO (4-abc) / 2 (I) [In the above formula, Radicals and indices are as defined in claim 1, Provided that the sum a + b + c < 4 in the formula (I) In the organosilicon component (A), the sum of all the units of the formula (I) is 0.5 or more and the organosilicon component (A) is defined as the ratio of the sum of the units of the formula (I) (B + c > = 1) in at least 1% of all units of formula (I). (B) a transition metal of Group 2, 4, 5, 7, and 8 of the +2 to +5 oxidation state and at least one of Groups 3, 4, and 5 One or more metal compounds selected from the group consisting of metals; And (C) at least one nitrogen compound selected from guanidine and amidine And to their use, in particular for the production of artificial stones. |