A process for preparing an organopolysiloxane block copolymer comprising: I) reacting a) a linear organosiloxane having the formula: R 1 q (3-q) SiO(R 1 2 SiO 2/2) n Si (3-q) R 1 q, wherein each R 1, at each occurrence, is independently a C 1 to C 30 hydrocarbyl or a hydrolyzable group containing at least one carbon atom, n is 10 to 400, q is 0, 1 or 2, E is a hydrolyzable group containing at least one carbon atom, and b) an organosiloxane resin comprising at least 60 mole % of [R 2 SiO 3/2] siloxy units in its formula, wherein each R 2, at each occurrence, is independently a C 1 to C 20 hydrocarbyl, in c) an organic solvent to form a resin-linear organosiloxane block copolymer; wherein the amounts of a) and b) used in step I) are selected to provide the resin-linear organosiloxane block copolymer with 5 to 65 mole % of disiloxy units [R 1 2 SiO 2/2] and 35 to 95 mole % of trisiloxy units [R 2 SiO 3/2], and wherein at least 95 weight percent of the linear organosiloxane used in step I) is incorporated into the resin-linear organosiloxane block copolymer; II) contacting said resin-linear organosiloxane block copolymer from step I) with a base bodying agent to reduce the silanol content of the resin-linear organosiloxane block copolymer to 5 mole % or less; III) optionally, further processing the resin-linear organosiloxane block copolymer; and IV) optionally, removing the organic solvent. I) reacting a) a linear organosiloxane having the formula: R 1 q (3-q) SiO(R 1 2 SiO 2/2) n Si (3-q) R 1 q, wherein each R 1, at each occurrence, is independently a C 1 to C 30 hydrocarbyl or a hydrolyzable group containing at least one carbon atom, n is 10 to 400, q is 0, 1 or 2, E is a hydrolyzable group containing at least one carbon atom, and b) an organosiloxane resin comprising at least 60 mole % of [R 2 SiO 3/2] siloxy units in its formula, wherein each R 2, at each occurrence, is independently a C 1 to C 20 hydrocarbyl, in c) an organic solvent to form a resin-linear organosiloxane block copolymer; wherein the amounts of a) and b) used in step I) are selected to provide the resin-linear organosiloxane block copolymer with 5 to 65 mole % of disiloxy units [R 1 2 SiO 2/2] and 35 to 95 mole % of trisiloxy units [R 2 SiO 3/2], and wherein at least 95 weight percent of the linear organosiloxane used in step I) is incorporated into the resin-linear organosiloxane block copolymer; a) a linear organosiloxane having the formula: R 1 q (3-q) SiO(R 1 2 SiO 2/2) n Si (3-q) R 1 q, wherein each R 1, at each occurrence, is independently a C 1 to C 30 hydrocarbyl or a hydrolyzable group containing at least one carbon atom, n is 10 to 400, q is 0, 1 or 2, E is a hydrolyzable group containing at least one carbon atom, and wherein each R 1, at each occurrence, is independently a C 1 to C 30 hydrocarbyl or a hydrolyzable group containing at least one carbon atom, n is 10 to 400, q is 0, 1 or 2, E is a hydrolyzable group containing at least one carbon atom, and b) an organosiloxane resin comprising at least 60 mole % of [R 2 SiO 3/2] siloxy units in its formula, wherein each R 2, at each occurrence, is independently a C 1 to C 20 hydrocarbyl, in c) an organic solvent to form a resin-linear organosiloxane block copolymer; wherein the amounts of a) and b) used in step I) are selected to provide the resin-linear organosiloxane block copolymer with 5 to 65 mole % of disiloxy units [R 1 2 SiO 2/2] and 35 to 95 mole % of trisiloxy units [R 2 SiO 3/2], and wherein at least 95 weight percent of the linear organosiloxane used in step I) is incorporated into the resin-linear organosiloxane block copolymer; to form a resin-linear organosiloxane block copolymer; wherein the amounts of a) and b) used in step I) are selected to provide the resin-linear organosiloxane block copolymer with 5 to 65 mole % of disiloxy units [R 1 2 SiO 2/2] and 35 to 95 mole % of trisiloxy units [R 2 SiO 3/2], and wherein at least 95 weight percent of the linear organosiloxane used in step I) is incorporated into the resin-linear organosiloxane block copolymer; II) contacting said resin-linear organosiloxane block copolymer from step I) with a base bodying agent to reduce the silanol content of the resin-linear organosiloxane block copolymer to 5 mole % or less; III) optionally, further processing the resin-linear organosiloxane block copolymer; and IV) optionally, removing the organic solvent.