THERMALLY HARDENED COMPOSITIONS BASED ON EPOXY RESINS, WHICH CONTAIN NON-AROMATIC UREAS AS ACCELERANTS Russian patent published in 2013 - IPC C08L63/00 C08G59/18 C08G59/68 C08K5/21 C08K5/205 C09J163/00 C08G59/20 C08G59/40 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to thermally hardened composition based on epoxy resins, which contains: (a) at least one epoxy resin A, which has on average more than one epoxy group per molecule; (b) at least one hardener B of opoxy resin, which is activated at increased temperature and represents amine, amide, anhydride of carboxylic acid or polyphenol; and (c) at least one accelerant C of formula (Ia) or (Ib), where R¹ represents H or n-valent aliphatic, or araliphatic residue; R² and R³ represent each independently on each other alkyl group; R^1' represents n'-atom aliphatic residue; R^2' represents alkyl group; R^3' independently on each other represent H, or alkyl group, or aralkyl group; and n and n' - each has value from 1 to 4, in particular, 1 or 2; and d) at least one viscosity modifier D. Invention also relates to application of such composition in form of one-component thermally hardened glue, for obtaining coatings and for obtaining structural foam for reinforcement of cavities, as well as to method of gluing heat-resistant materials with application of composition by invention and to glued together/glued to product, thus obtained, and to vehicle or vehicle component, which contain such foamed product. Also described is application of accelerant of formula (Ia) or (Ib) for increasing viscosity of claimed compositions based on epoxy resins.

EFFECT: obtaining thermally hardened compositions based on epoxy resins, which have good stability in storage, are quickly hardened and have high impact strength.

26 cl, 2 tbl, 5 ex