METHOD OF PRODUCING SEALING COMPOSITION AND COMPOSITION THEREOF Russian patent published in 2013 - IPC C09K3/10 

FIELD: chemistry.

SUBSTANCE: disclosed is a sealing composition which contains the following (pts.wt): a compound based on low-molecular weight siloxane rubber (100), oligodimethyl siloxane with kinematic viscosity of 10-350 mm²/s (10-50) and finely dispersed silicon dioxide with specific surface area of 50-300 m²/s (10-40). Also disclosed is a method of producing said composition, wherein a pre-dried and vacuum-treated mixture of silicon dioxide and oligodimethyl siloxane is added to a dried and deaerated compound based on low-molecular weight siloxane rubber.

EFFECT: method of producing sealing composition having the disclosed composition improves physical and mechanical properties of coating electronic devices in order to protect them from mechanical and electric factors and prolong stable operation of electronic devices in conditions of high humidity and high supply voltages.

2 cl, 2 dwg, 1 tbl, 7 ex