. 2015 Feb 23;11(15):2916–2923. doi: 10.1039/c5sm00218d

W)_rel of different monomer combination and reaction rate constants of conversions of n-butyl alcohol ^a with isocyanates and primary isocyanates with primary and secondary amines taken from ref. 30–32 .

Amine	Isocyanate	k _E(W/O)_rel	k _E(O/W)_rel
En	TDI	1	1
HMDA		4.98	36.47
TEPA		5.99	50.94
(En)_n		10.21	244.21
Secondary AM	Primary isocyanate	1 (ref. 30–32)
Primary AM	Primary isocyanate	2–5 (ref. 30–32)
HMDA	HDI	1	1
	HDI₃	6.52	0.72
	TDI	9.07	40.83
HDI	n-Butyl alcohol	1 ^a ^30–32
TDI	n-Butyl alcohol	66.4 ^a ^30–32

^aThere is no reliable information on absolute reaction rate constants of HDI and TDI with amines. However, trends in conversions of isocyanates with alcohols can be directly compared even though that they react slower than the conversion with amines by a factor of 100–1000. The values correspond to the reaction with the second isocyanate function of the molecule.

Table 1. Relative polyurea microencapsulation rates k E(W/O)rel and k E(O/W)rel of different monomer combination and reaction rate constants of conversions of n-butyl alcohol a with isocyanates and primary isocyanates with primary and secondary amines taken from ref. 30–32 .

Table 1. Relative polyurea microencapsulation rates k _E(W/O)_rel and k _E(O/W)_rel of different monomer combination and reaction rate constants of conversions of n-butyl alcohol ^a with isocyanates and primary isocyanates with primary and secondary amines taken from ref. 30–32 .