A method of applying a foam composition using spray foam equipment, the foam composition comprising the reaction product of a compound of formula (a) with a compound of formula (c): wherein R 1, and R 3, at each occurrence, are each independently selected from a saturated or unsaturated, linear, branched, or cyclic hydrocarbon group, wherein each hydrocarbon group optionally includes one or more heteroatoms; an aromatic group; a heteroaromatic group; and a heterocyclic group; or any combination thereof; wherein said groups, at each occurrence, are independently unsubstituted or substituted with one or more suitable substituents; m is 2 to 200; and the method comprising: providing a first container for the compound of formula (a), the first container in fluid communication with a first conduit, the first conduit in fluid communication with a mixing chamber; providing a second container for the compound of formula (c), the second container in fluid communication with a second conduit, the second conduit in fluid communication with the mixing chamber; pneumatically pumping the compound of formula (a) from the first container to the first conduit and bringing the compound of formula (a) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); pneumatically pumping the compound of formula (c) from the second container to the second conduit and bringing the compound of formula (c) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); combining the compound of formula (a) and the compound of formula (c) in the mixing chamber to form a reaction mixture; pumping the reaction mixture from the mixing chamber through a third conduit to a nozzle or other orifice, the third conduit heated to a temperature of 21 °C to 93 °C (70 °F to 200 °F); and expelling the reaction mixture through the nozzle or orifice. R 1, and R 3, at each occurrence, are each independently selected from a saturated or unsaturated, linear, branched, or cyclic hydrocarbon group, wherein each hydrocarbon group optionally includes one or more heteroatoms; an aromatic group; a heteroaromatic group; and a heterocyclic group; or any combination thereof; wherein said groups, at each occurrence, are independently unsubstituted or substituted with one or more suitable substituents; m is 2 to 200; and the method comprising: providing a first container for the compound of formula (a), the first container in fluid communication with a first conduit, the first conduit in fluid communication with a mixing chamber; providing a second container for the compound of formula (c), the second container in fluid communication with a second conduit, the second conduit in fluid communication with the mixing chamber; pneumatically pumping the compound of formula (a) from the first container to the first conduit and bringing the compound of formula (a) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); pneumatically pumping the compound of formula (c) from the second container to the second conduit and bringing the compound of formula (c) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); combining the compound of formula (a) and the compound of formula (c) in the mixing chamber to form a reaction mixture; pumping the reaction mixture from the mixing chamber through a third conduit to a nozzle or other orifice, the third conduit heated to a temperature of 21 °C to 93 °C (70 °F to 200 °F); and expelling the reaction mixture through the nozzle or orifice. providing a first container for the compound of formula (a), the first container in fluid communication with a first conduit, the first conduit in fluid communication with a mixing chamber; providing a second container for the compound of formula (c), the second container in fluid communication with a second conduit, the second conduit in fluid communication with the mixing chamber; pneumatically pumping the compound of formula (a) from the first container to the first conduit and bringing the compound of formula (a) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); pneumatically pumping the compound of formula (c) from the second container to the second conduit and bringing the compound of formula (c) to the mixing chamber under a pressure of from 3,447-13,790 kPa (500-2,000 psi); combining the compound of formula (a) and the compound of formula (c) in the mixing chamber to form a reaction mixture; pumping the reaction mixture from the mixing chamber through a third conduit to a nozzle or other orifice, the third conduit heated to a temperature of 21 °C to 93 °C (70 °F to 200 °F); and expelling the reaction mixture through the nozzle or orifice.