METHOD OF OBTAINING POLYURETHANE POLYMER, CONTAINING POLYESTHERPOLYOLS WITH TERMINAL SECONDARY HYDROXYL GROUPS Russian patent published in 2015 - IPC C08G18/42 C08G18/18 C08G18/10 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining polyurethane polymer and polyurethane polymer obtained by said method. Described is method of obtaining soft foam polyurethane, including stage of reaction of: A) polyesterpoluols, which have terminal secondary hydroxyl groups, obtained by reaction of polyesters, containing terminal carboxyl groups, with epoxide of general formula , with R1 representing alkyl residue or aryl residue, and polyester, containing terminal carboxyl groups, having acid number from ≥25 mg KOH/g to ≤400 mg KOH/g and hydroxyl number ≤5 mg KOH/g with B1) polyisocyanates, selected from the group, including toluylene diisocyanate, diphenylmethane diisocyanate, polymer diphenylmethane diisocyanate, xylylene diisocyanate, naphthylene diisocyanate, hexamethylene diisocyanate, diisocyanate dicyclohexylmethane and/or isophorone diisocyanate. Also described is soft polyurethane, obtained by claimed method.

EFFECT: possibility to apply specified quantity of tin-based catalysts as partial substitution of amine catalysts, which has favourable effect on reduction of negative properties, caused by great amounts of amine catalyst, such as, for instance, odor or characteristics of ageing.

14 cl, 5 ex, 2 tbl