METHOD FOR PRODUCING ORGANOSILICON COMPOUNDS COMPRISING A MASKED ISOCYANATE GROUP IN A MORE ECONOMIC AND ECOLOGICAL MANNER

摘要

The invention relates to a method for producing organosilicon compounds comprising an isocyanate group of general formula (I) (RO)_3-n(R¹)_nSi-CH₂-N(H)-C(O)-X (I) masked by a blocking agent, characterized by reacting an aminoalkylsilane of general formula (II) (RO)_3-n(R¹)_nSi-CH₂-NH₂ (II) with a compound of general formula (III) Cl-CO-X (III), wherein R represents a substituted or unsubstituted C₁-C₁₅ hydrocarbon group, preferably a C₁-C₈ hydrocarbon group, especially preferred a C₁-C₃ hydrocarbon group, an acetyl group, a siloxane group, a silicone oligomer group, a silicone polymer group, a silicone resin group, a group from colloidal SiO₂ or from silicone particles, R¹ represents a hydrogen atom or a saturated or unsaturated C₁-C₂₀ hydrocarbon group which is optionally substituted with -CN, -NCO, -NR²R³, -COOH, -COOR², halogen, acryl, epoxy, -SH, -OH or -CONR²R³, preferably a saturated C₁-C₈ hydrocarbon group, especially preferred a saturated C₁-C₃ hydrocarbon group, wherein one or more, non-vicinal methylene units may be replaced by groups -O-, -CO-, -COO-, -OCO-, or -OCOO-, -S-, or -NR²- and in which one or more, non-vicinal methine units may be replaced by groups, -N=,-N=N-, or -P=, wherein the groups R₁ may be the same or different when the values are n > 1, n is 0, 1, 2 and X represents a group, selected from the groups -NR²R³, -S-R¹, -O-R⁴, -C(H)(CO₂R¹)₂ and -O-N=CR²R³, and R², R³ may be the same or different and have the same meaning as R₁ or may represent, together, a cyclic, optionally branched saturated or unsaturated hydrocarbon group with 2-30 carbon atoms which is optionally functionalized by one or more groups -O-, -CO-, -COO-, -OCO-, -S-, =N-, -NR¹-, -CONR¹-, and R⁴ represents an aryl group with C₆-C₂₀ carbon atoms which is optionally functionalized by -OH, NR²R³-, CO2R¹, -OCOR¹, NO₂ or -SH, or other groups containing oxygen, nitrogen, sulfur or phosphorus and hydrocarbon groups.