The Modification of Polyurethane Foams Using New Boroorganic Polyols: Obtaining of Polyols with the Use of Hydroxypropyl Urea Derivatives

Table 2

Reaction conditions of EBUI and EBUII with PC.

Synth.	Kind of EBU	Initial molar ratio of reagent	Amount of K2CO3 (mole/BHPU mole)	Temp. (°C)	Reaction time (h)	Formal molar ratio BHPU : oxypropylene unit in product
1	EBUI	1 : 6	0.09	160	30	—
2		1 : 6	0.15	160	26.5	1 : 5.7
3		1 : 6	0.09	180	9.75	1 : 5.95
4		1 : 6	0.09*	180	42	1 : 5.0
5		1 : 6	0.15*	180	34.5	1 : 5.4
6		1 : 12	0.12	180	14	1 : 12.2
7		1 : 18	0.12	180	22	1 : 16.8
8	EBUII	1 : 6	0.12	180	9.5	1 : 3.8
9		1 : 12	0.12	180	13	1 : 9.6
10		1 : 18	0.12	180	17.5	1 : 15.2

∗DABCO was used as catalyst.