METHOD FOR MAKING OLIGO-(POLY)-ORGANOSILOXANE ADDITIVE Russian patent published in 2009 - IPC C08G77/398 C10M107/50 

FIELD: chemistry.

SUBSTANCE: method for making oligo-(poly)-organosiloxane additive implies reaction of oligoorganosiloxane of formula: (CH₃)3SiO[(CH₃)₂SiO]_m[(CH₃)(CH₂CH₂CF₃)SiO]_nSi(CH₃)₃, where m=5÷63, n=0÷4, and organic transition metal compound chosen from the group including cerium, iron, nickel, cobalt, chrome and copper at temperature 240-290°C combined with the air running through the reaction mass. Before the process, the air is additionally run through oligorganosiloxane within 30-60 minutes at air consumption prior to and during reaction within 1 to 5 ml/min per 1 g of the reaction mass. Organic transition metal compound is preliminary dissolve in a hydrocarbon solvent. The prepared solution is added to oligoorganosiloxane. The produced additives are dissolved in any concentration at temperature 100°C and lower in siloxane base liquids in synthesis of additives, and possess colloid long-term storage-stability.

EFFECT: improved technological effectiveness of making additives with high antioxidant efficiency and colloid long-term storage-stability.

3 cl, 5 ex