FIELD: polymer production.
SUBSTANCE: invention relates to foaming agent mixture composed of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane, and also 1,1,1,2-tetrafluoroethane and/or 1,1,1,3,3-pentafluoropropane; to component containing above mixture, auxiliary substances or additives such as fire retardants or catalysts; and to incombustible mixture precursor containing polyols with ether and/or ester groups, which have molecular weight from below 400 and up to 10000 and more than 8 hydroxyl groups, and foaming agent mixture. Foaming agent mixture, component, and incombustible mixture precursor are destined for preparation of foamed plastics, particularly foamed polyurethanes.
EFFECT: improved inflammation temperature of mixtures intended for preparing high-quality foamed plastics.
6 cl, 2 ex
