FIELD: organic chemistry, chemistry of polymers.
SUBSTANCE: invention relates to chemistry of polyurethans, namely, to spandex improved composition. Spandex is product of reaction of at least one polymeric glycol and at least one polyol comprising alkoxylated aromatic functional group with at least one organic diisocyanate followed by the polymerization process of synthesized protected glycol with at least one diamine. Alkoxylated diphenol or alkoxylated dihydrophenol is used as polyol comprising alkoxylated aromatic functional group. Also, invention describes a method for synthesis of spandex that comprises (with exception for steps in preparing isocyanate-protected polyols and their polymerization with diamines) molding steps from reaction mixture, molding from a melt, dry molding or wet molding of polyurethane also. Spandex possesses the best stability to high-temperature coloring and minimal loss of physical properties, such as elastic recovery of form.
EFFECT: improved method of synthesis.
16 cl, 4 tbl, 5 dwg
