Process for the preparation of aminofunctional organopolysiloxanes

摘要

Preparation of aminofunctionalized organopolysiloxanes (A) comprises mixing aminosilane (I) with organosilicium compounds (II), basic catalysts (alkali hydroxides, alkali alcoholates and alkali siloxanolates) and optionally alcohol compounds (III); heating the reaction mixture at 70-100[deg]C; and neutralizing the basic catalysts by adding a neutralizing agent to the mixture and that forms soluble basic salts of (A). Preparation of aminofunctionalized organopolysiloxanes (A) comprises mixing aminosilane (I) of formula R aQ bSi(OR 1>) 4 - ( a + b ) with organosilicium compounds (II) (siloxanes of formula R d(OR 1>) fSiO (4-(d+f)/2) or R cSiO(4-c/2); or silanes of formula R cSi(OR 1>) 4 - c), basic catalysts (alkali hydroxides, alkali alcoholates and alkali siloxanolates) and optionally alcohol compounds (III) of formula H-[O(CHR 2>) p] mOR 3>; heating the reaction mixture at 70-100[deg]C; and neutralizing the basic catalysts by adding a neutralizing agent to the mixture and that forms soluble basic salts of (A). R : H or optionally F-, Cl- or Br- substituted 1-18C hydrocarbon; R 1>H or 1-4C alkyl (optionally substituted with ether); a : 0-2; b : 1-3 (where the sum of a+b is lesser than or equal to 3); Q : -R 5>-[NR 6>(CH 2) n] eN(R 6>) 2; R 5>1-18C hydrocarbon; R 6>H, 1-18C hydrocarbon (optionally substituted with F-, Cl-, Br-, OH- or 1-5C alkoxy) or acyl; e : 0-4; n : 2-6; c : 0-3; d : 0-2; f : 1-3 (where the sum of d+f is less than or equal to 3); R 2>H or 1-18C hydrocarbon; R 3>H, 1-30C hydrocarbon or -C(=O)-R 4>; R 4>R 2> or OR 2>; p : 2-4; and m : 0-100. An independent claim is also included for aminofunctionalized organopolysiloxanes compounds of formula (Z(R) 2SiO((R) 2SiO) k(RQSiO) lSi(R) 2Z). Z : -OR 1> and/or -[O(CHR 2>) p] mOR 3>; k : 50-700; and l : 1-60. Provided that at least a portion of Z is of formula -[O(CHR 2>) p] mOR 3>, where m is equal to 0 and R 3> is 10-12C alkyl or 10-12C alkoxy.