US 12,146,022 B2
Polyol components and use thereof for the production of rigid polyurethane foams
Sirus Zarbakhsh, Ludwigshafen (DE); Johann Klassen, Lemfoerde (DE); and Mark Elbing, Gross Groenau (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 16/497,673
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Mar. 23, 2018, PCT No. PCT/EP2018/057479
§ 371(c)(1), (2) Date Sep. 25, 2019,
PCT Pub. No. WO2018/177941, PCT Pub. Date Oct. 4, 2018.
Claims priority of application No. 17163074 (EP), filed on Mar. 27, 2017.
Prior Publication US 2020/0048400 A1, Feb. 13, 2020
Int. Cl. C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 18/66 (2006.01); C08G 18/76 (2006.01); C08G 65/26 (2006.01); C08J 9/14 (2006.01)
CPC C08G 18/4816 (2013.01) [C08G 18/482 (2013.01); C08G 18/4829 (2013.01); C08G 18/4883 (2013.01); C08G 18/5033 (2013.01); C08G 18/6674 (2013.01); C08G 18/7664 (2013.01); C08G 2110/0025 (2021.01)] 10 Claims
 
1. A method of manufacturing a rigid polyurethane foam, the method comprising:
reacting a polyol component P) with a polyisocyanate in a closed mold,
wherein said polyol component P) comprises:
a) 1 to 70 wt % of at least one polyether polyol A) having an OH number in a range of from 300 to 500 mg KOH/g, comprising units based on mixtures having a functionality in a range of from 5.7 to 6.4 of 10 to 29.9 wt % of a monomer ai), 0.1 to 20 wt % of a monomer aii) and 60 to 89.9 wt % of a monomer aiii), wherein
ai) is sucrose,
aii) is selected from the group consisting of monopropylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, glycerol and mixtures thereof,
aiii) is solely propylene oxide as alkylene oxide,
wherein the sum total of ai), aii) and/or aiii) adds up to 100 wt %,
b) 1 to 50 wt % of at least one polyether polyol B) having an OH number in a range of from 300 to 500 mg KOH/g, comprising units based on mixtures having a functionality in a range of from 3.0 to 5.0 of monomers bi) and bii),
the at least one polyether polyol B) being obtained under catalysis with at least one of imidazole, trimethylamine, N, N-dimethylcyclohexylamine or dimethylethanolamine, wherein
bi) is selected from the group consisting of 2,3-tolylenediamine, 3,4-tolylenediamine, 2,4-tolylenediamine, 2,5-tolylenediamine, 2,6-tolylenediamine and mixtures thereof,
bii) is solely propylene oxide as alkylene oxide,
wherein at least one polyether polyol B) is prepared with propylene oxide as the sole alkylene oxide,
c) 1 to 12 wt % of at least one polyether polyol C) having an OH number in a range of from 100 to 290 mg KOH/g, comprising units based on mixtures having a functionality in a range of from 2.8 to 5.0 of monomers ci) and cii), wherein
ci) is selected from the group consisting of ethylenediamine, 1,3-propylenediamine, 1,3-butylenediamine, 1,4-butylenediamine, 1,2-hexamethylenediamine, 1,3-hexamethylenediamine, 1,4-hexamethylenediamine, 1,5-hexamethylenediamine, 1,6-hexamethylenediamine, phenylenediamines, 2,3-tolylenediamine, 3,4-tolylenediamine, 2,4-tolylenediamine, 2,5-tolylenediamine, 2,6-tolylenediamine, 4,4′-diaminodiphenylmethane, 2,4′-diaminodiphenylmethane, 2,2′-diaminodiphenylmethane, glycerol, trimethylolpropane, monopropylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol and mixtures thereof,
cii) is selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide and mixtures thereof as alkylene oxides,
d) 0.1 to 10 wt % of at least one catalyst D),
e) 0.1 to 10 wt % of at least one auxiliary and/or added substance E), and
f) 0 to 10 wt % of at least one blowing agent F),
wherein the sum total of components A), B), C), D), E) and, when present, F) adds up to 100 wt %.