URETHAN-CONTAINING SIMPLE POLYETHERS WITH TERMINAL PRIMARY AMINO-GROUPS AS HARDENING AGENTS OF EPOXYDIANE RESINS AND EPOXY COMPOSITION BASED ON THEREOF (VARIANTS) Russian patent published in 1997 - IPC

FIELD: organic polymers. SUBSTANCE: product: new compounds of the following structural formula: (I) where R - or -CH₂-C₆H₄-CH₂-; n= 2-28; y/x = 0.01-1.00; z = (x + y) = 2.4-2.9, molecular mass is 840-5360. Indicated polyethers were synthesized by interaction of aliphatic diamines with simple polyethers containing the terminal cyclocarbonate, epoxy- and hydroxyl-groups. Using urethan-containing simple polyether the following compositions were prepared that involve, p. p.: compound (I) epoxydiane resine 100 p. p. and hardening agent - compound of the formula (I) 42-550, and epoxydiane resin 100, and compound of the formula (I) 42-166, and water 7-60. Compositions were prepared by components mixing followed by hardening at the room temperature for 20-28 h. The hardened products show high indices of physico-mechanical properties. Synthesized polymers were used in different branches of industry. EFFECT: enhanced quality of compositions. 3 cl, 5 tbl