| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: described is hardened composition containing: polymer polythioether; and polyepoxy-compound based on multi-base acid, in which polymer polythioether is obtained by method including the following stages: carrying out reaction of first polythiol with compound having one epoxy-group and second group, different from epoxy-group, which can react with thiol group with formation of first prepolymer, where polytiol preferably reacts with second group; carrying out reaction of first prepolymer and second polytiol with epoxy-group until second prepolymer is obtained; and carrying out reaction of second prepolymer and third polytiol with polyvinyl ether and polyfunctionalising agent. Also described is method of obtaining said above hardened composition, its application as sealant, leak-proof sealing up. ^ EFFECT: improved corrosion stability and adhesion of said hardened compositions under impact of fuels. ^ 15 cl, 6 tbl, 2 ex |
