ELASTIC OPOLYAMINES, ELASTIC AMINOGROUP-TERMINATED ADDUCTS, THEIR COMPOSITIONS AND APPLICATION METHODS Russian patent published in 2015 - IPC C08G75/02 C08G75/14 C08G2/10 C08G75/12 

FIELD: chemistry.

SUBSTANCE: aminogroup-terminated polyformal adduct has general formula (4), (5). Aminogroup-terminated polyformal adduct has general formula F-CH₂-CH(OH)-R¹⁶-S-R¹⁵-S-R¹⁶-CH(OH)-CH₂-F (13), {F-CH₂-CH(OH)-R¹⁶-S-R¹⁵-S-R¹⁶-CH(OH)-CH₂-V'-}_zB (14). Terminal aminogroups R⁵ and F in these compounds have general formula A-Y-(CR² ₂)_p-[-O-(CR¹ ₂O_n-]_m-O-(CR² ₂)_p-Y-A' (1'). Sealing composition includes product of reaction of said adduct and prepolymer with terminal isocyanate groups. Method of hole sealing consists in the fact that sealant, obtained from said composition, is applied on hole with further solidification of sealant.

EFFECT: invention makes it possible to increase adduct elasticity, increase hardness, tensile strength, relative extension, rupture strength of cured sealant.

20 cl, 1 dwg, 1 tbl, 27 ex