At NINGBO INNO PHARMCHEM CO.,LTD., we are focused on providing insights into the chemical components that drive innovation in the industries we serve. One such crucial component in polyurethane manufacturing is 2,2'-Dimorpholinodiethylether, widely known as DMDEE. This amine catalyst is central to achieving specific performance characteristics in a variety of polyurethane products.

The chemical structure of DMDEE lends itself to its function as a potent blowing catalyst. Its tertiary amine nature facilitates the catalytic reaction between isocyanate (NCO) groups and active hydrogen compounds, most notably water. This reaction produces carbon dioxide gas, which is the primary blowing agent in many polyurethane foam systems. DMDEE is particularly effective in promoting this gas-forming reaction while exhibiting a lower propensity for the gelation (cross-linking) reaction. This selective activity is critical for controlling the rate of foam rise and the final cell structure, ensuring predictable outcomes in applications like flexible foams and rigid foam sealants.

Moreover, DMDEE's molecular structure provides a degree of steric hindrance around the amine groups. This steric effect is key to its ability to prolong the storage stability of isocyanate-containing prepolymers. For manufacturers producing one-component polyurethane systems, such as spray foams or sealants, this extended shelf life is a significant advantage, ensuring product integrity and performance over time. The amine catalyst's stability in moisture-cured systems further highlights its utility.

The application of DMDEE catalyst is diverse, extending to systems utilizing TDI, MDI, and IPDI. Its role in catalyzing the NCO-water reaction is fundamental to achieving the desired foaming characteristics. Understanding these chemical principles allows manufacturers to better harness the capabilities of DMDEE to create high-quality polyurethane products. NINGBO INNO PHARMCHEM CO.,LTD. is a trusted supplier of essential chemical catalysts, supporting advancements in material science and manufacturing.