Blowing agents suppliers

TABLE 4.7 Selected Suppliers of Chemical Blowing Agents... 

Some properties of physical blowing agents are given in Table 4.3. Most of the data in Table 4.3 come from Solvay, Honeywell and DuPont websites, but some has been provided by various suppliers at Rapra conferences. 

For example, in profile foam operations, where higher density foams are desired, it is general practice to use chemical blowing agents (CBA). These materials, which decompose under polymer melt processing conditions to yield gases to expand the polymer, are usually dry-blended with the resin and then fed to the extruder. They can also be compounded directly into the resin by the polymer supplier and provided as a ready-to-use masterbatch. 

Examples of blowing agents are listed in Table 1, and some suppliers are cited in Table 2. 

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