Patent ID: 9708436
Date: 2017-07-18
CPC Classifications: C07C,C08G,C08J

Claim:
1. A method of making a polyurethane comprising contacting at least one polyisocyanate with at least one polyol in the presence of a catalytically effective amount of a composition obtained by contacting at least one tertiary amine with at least one inert gas wherein the tertiary amine and gas are in equilibrium, wherein the partial pressure of oxygen in the composition is less than under ambient conditions, wherein the amine contains at least one isocyanate reactive group comprising at least one member selected from the group consisting of secondary amine, hydroxyl, amide, and urea, wherein a concentration of DMF in the composition is less than about 10 parts per million, wherein a concentration of formaldehyde in the composition is less than about 10 parts per million, and wherein a concentration of antioxidants in the composition is less than about 5 parts per million.