SEALING COMPOSITION Russian patent published in 2000 - IPC

FIELD: chemical industry. SUBSTANCE: described is sealing composition comprising polysulfide oligomer, manganese dioxide, plasticizer, stearic acid, aerosil, diphenyl guanidine and modifying additive. Modifying additive includes unsaturated polyether resin prepared by polycondensation of mixture of norbornendicarboxylic acid anhydride and maleic or phthalic anhydride at molar ratio thereof of 4: 6 with mixture of ethylene glycol or propylene glycol and diethylene glycol at molar ratio thereof of 3:7, at molar ratio of acid anhydrides and glycols of 1:1, ratio of components being as follows, wt parts: polysulfide oligomer, 100; filler, 83.43-142; manganese dioxide, 6.2- 10; plasticizer, 7.19-15; stearic acid, 0.13-0.7; aerosil, 0.55-4.34; diphenyl guanidine, 0.2-1.5; and said modifying additive, 0.5-5. EFFECT: increased adhesion of sealant based on claimed sealing composition to glass and duralumin alloy with physicomechanical properties retained. 2 tbl