COMPOSITION BASED ON EPOXY RESINS AND FILM, PREPREG AND FIBRE-REINFORCED PLASTIC OBTAINED USING SAID COMPOSITION Russian patent published in 2016 - IPC C08L63/00 C08L53/00 C08J5/24 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions based on epoxy resins, which are preferably used in fibre-reinforced plastics. Disclosed is a composition based on epoxy resins for making composite materials, containing: epoxy resin, having an oxazolidone ring structure in molecule; bifunctional epoxy resin of bisphenol type with number-average molecular weight of at least 600, but not more than 1,300, having in molecule an oxazolidone ring structure; tri-block copolymer selected from poly(methyl methacrylate)/poly (butyl acrylate)/poly(methyl methacrylate) and poly(styrene)/poly (butadiene)/poly(methyl methacrylate; and a curing agent. Invention also discloses a film made from a composition based on epoxy resins, a prepreg and fibre-reinforced plastic.

EFFECT: technical result is disclosed composition can provide both suitability to processing of prepreg at room temperature and suppression of occurrence of voids in moulded product, and fibre-reinforced plastic obtained from disclosed composition has excellent mechanical properties, viscosity at destruction and resistance to high temperatures.

19 cl, 2 tbl, 20 ex