EPOXY-URETHANE COMPOSITION Russian patent published in 2024 - IPC C08L63/00 C09J163/02 

FIELD: adhesive materials.

SUBSTANCE: invention relates to modified epoxy-urethane compositions used to produce universal adhesives (glues), sealants and binders for flexible composites. Disclosed is an epoxy-urethane composition for adhesives, sealants and binders for flexible composites, containing an epoxy component and a curing agent, where the epoxy component includes (wt.%): low-viscosity epoxy resin (65.0–72.0) and a mixture of tri-, di- and monofunctional ether cyclocarbonates, including a trifunctional oligoester cyclocarbonate (8.0–17.5), difunctional (9.0–10.0) and monofunctional (5.0–10.0) ether cyclocarbonates, wherein composition per 100 wt.pts. epoxy component contains from 16.9 to 20.3 wt.pts. curing agent.

EFFECT: creation of a universal epoxy-urethane composition having improved strength properties, including both shear strength and tensile strength with acceptable elasticity of the composition, allowing the use of the composition as an adhesive applicable on both rigid and elastic substrates, as a sealant, for example for sealing hollow fiber gas separation modules, or as a binder for creating flexible composite materials, for example flat foil conductors and loops, as well as flexible printed circuits.

7 cl, 2 dwg, 5 tbl, 3 ex