ANAEROBIC SEALING COMPOSITION Russian patent published in 2015 - IPC C09K3/10 C09J4/02 C09J175/04 C08G18/10 

FIELD: chemistry.

SUBSTANCE: invention relates to field of anaerobic sealing compositions based on (meth)acryl monomers, applied as gasket in sealing flanges and flat joints, made of various metals and alloys, in particular applied in butt end sealing of pumps, steering units, units of thrust reverse systems and other hydrosystems of airplanes. Anaerobic sealing composition contains, wt. p.: (meth)acryl monomer 20.0-55.0, initiator 2.0-5.1, inhibitor 0.05-0.1, functional additives 4.0-20.0 and mixture, containing 93-80 wt % of product of interaction of hydroxyl-containing polybutadiene rubber SKD-GTRA, aromatic and/or aliphatic diisocyanate, hydroxyl-containing (meth)acrylate and water with their molar ratio respectively (1-5):(2-6):2:(0.001-0.1) and 7-20 wt % of product of interaction of hydroxyl-containing (meth)acrylate, water and 2,4-toluylenediisicyanate with their molar ratio 2:(0.001-0.1):1 - 80.0-45.0.

EFFECT: preservation of adhesive strength of hardened anaerobic sealing composition in exploitation of products in medium of hydraulic liquid based on phosphoric acid ethers with achievement of required rate of hardening and limit of adhesion tearing strength.

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