COMPOUND Russian patent published in 2006 - IPC C08L63/02 C09K3/10 C09D5/34 C09J163/02 

FIELD: insulation materials.

SUBSTANCE: compound used for protection and sealing of miniaturized electric appliances, including ferrite phase shifters with closed mm-range magnet system and the like, is composed of, wt parts: 4,4'-isopropylidenediphenol epoxide resin (ED-20 or ED-16)m 90-110; low-molecular synthetic dimethylsiloxane rubber (SKTN A), 10-30; amine hardener (AF-20), 15-25; cold-cure catalyst (No 68), 0.4-1.2; and organic solvent mixture, 10-15. Amine hardener is phenol/formaldehyde/ethylenefiamine reaction product. Organic solvent mixture is constituted by 2:1 mixture of xylene with ethyl alcohol.

EFFECT: strengthened structure and improved stability of phase-time characteristics within extended working temperature range and increased electric strength of miniaturized ferrite phase shifters under sinusoidal vibration conditions with acceleration temperature up to 10g within frequency range 1-500 Hz.

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