Synthesis of MDIPA, an aromatic diamine curative for polyurethane adhesives. Final report
The compound 4,4'-methylene bis-(2,6-diisopropylaniline), or MDIPA, has shown good thermal stability, high butt tensile strength, and excellent compatibility with salt when used as a curative for LLL's Halthane 87 prepolymer. Laboratory-scale synthesis of MDIPA by condensation of commercially-available 2,6-diisopropylaniline and formaldehyde has been accomplished, using the amine sulfate as an intermediate. Polymer Pilot Plant scale-up has been achieved; kilogram quantities at acceptable purity levels (98+ percent) have been produced.
- Research Organization:
- Bendix Corp., Kansas City, MO (United States)
- DOE Contract Number:
- AC04-76DP000613
- OSTI ID:
- 6970915
- Report Number(s):
- BDX-613-2509
- Country of Publication:
- United States
- Language:
- English
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