FIELD: chemistry.
SUBSTANCE: foaming agent of organic amine salt is disclosed, that is, the foaming agent of complex polyurethane, it contains: 1) hexafluorobutene and 2) a mixture of alkanolamine salt (MAA), where the mixture of alkanolamine salt (MAA) contains organic alcohol amine salt compounds, and organic alcohol amine salt compounds are organic alcohol amine salt compounds having the following general formula (I): An– [Bm+]p (I), according to the above formula, An– is an anion having –n valence as a CO2 donor, where n = 1 or 2; Bm+ is an organic amine (B) cation having a group -+NR3R4H and/or a group -+NR3H in the amount of m, where m = 1-5; p= n/m; and where An– is one or two representatives selected from a group consisting of the following anions: carbonate: CO32- and bicarbonate: HO-COO-; where R3 and R4 are independently chosen from H or R; provided that: the compound of the general formula (I) has at least one R-group associated with its atom(s) N, and the mixture of alkanolamine salt (MAA) contains 60-99, wt. %, of monoalkanolamine salt and dialkanolamine salt, based on the total mass of the mixture of alkanolamine salt (MAA); where the group R is HOCH2CH2-, HOCH2CH(CH3)-, or HOCH(CH3)CH2-; where the water content in the mixture of alkanolamine salt (MAA) is from more than 0 to 40, wt. %, and the mentioned organic compound of amine (B) is an organic compound of amine having 2-20 carbon atoms; where the mass ratio of hexafluorobutene to a mixture of alkanolamine salt (MAA) in a composite foaming agent is 0.4-5:1. A method for foaming polyurethane using CO2 and organic amine in a composition for foaming polyurethane is also disclosed. A method for obtaining the amine salt of carbonate alcohol with a low water content from carbonate amine and epoxide is also disclosed.
EFFECT: expansion of the range of foaming agents from organic amine salts.
17 cl, 3 tbl, 31 ex, 3 dwg
