ORGANOSILICON COMPOUND HAVING AMINO GROUP AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To provide an organosilicon compd. which has reactive amino groups, comprises specific units, and can be used for treating leather or all kinds of fabrics comprising org. fibers. SOLUTION: This compd. contains siloxane units represented by the formula: Ra Si(OR )b O(4-a-b)/2 (wherein R is a 1-18C hydrocarbon group optionally halogenated, alkoxylated, or alkylated and optionally interrupted by an oxygen atom; R is an alkyl group optionally interrupted by an oxgen atom; and a and b are each 0-3 provided a+b is 3 or lower) and units selected from among those represented by formulas I, II, and III wherein c is 0-2; A is -R R z N(-CR 2 - R )(2-z) ; A is a group represented by formula IV; and A is a group repesented by formula V [wherein z is 0-1; R is 2-8C alkylene or a group represented by any of formulas VI to VIII; R an R are each H or 1-8C alkyl; an R is- CR +CR 2 or -C≡CR (wherein R is H or 1-8c alkyl)]} provided at least one unit represented by formula I and at least one unit represented by formula II or III are contained per molecule.