| 摘要 |
POLYURETHANE FROTH FOAMS A process for the manufacture of a polyurethane froth foam is provided. The process, which comprises contacting a polyurethane forming formulation with an inert gas under conditions which produce a froth, uses a formulation which contains either (1) an aromatic amine having the formula wherein the R groups are independently selected from hydrogen or alkyl groups and the R1 and R2 groups are independently selected from hydrogen or hydroxyalkyl groups or (2) an alkoxylated bisphenol A. Optionally a second additive which is a linear glycol can also be used. The polyurethane froth foams produced are thermoformable whilst exhibiting good shape retention at ambient temperature. |
