Chemical Name: Methylene-bis(4-cyclohexylisocyanate)
Synonyms: 4,4-Methylenedicyclohexyl diisocyanate; Nacconate H 12
CAS No.: 5124-30-1
Molecular Fomula: C15H22N2O2
Molecular weight: 262.35
Appearance: Transparent colorless liquid
Assay: 99.5%
A cycloaliphatic diisocyanate with superior light stability and chemical resistance. Also known as HMDI or H12MDI, it is widely used in high-performance polyurethane formulations.
Parameter | Value | Comparison with MDI | Comparison with TDI |
---|---|---|---|
Molecular Formula | C15H22N2O2 | More hydrophobic | Lower viscosity |
Molecular Weight | 262.35 g/mol | Better UV resistance | Higher reactivity |
Appearance | Colorless to pale yellow liquid | Less yellowing | Faster curing |
NCO Content | 32.0±0.3% | Higher durability | Lower cost |
Client: Leading European OEM
Challenge: Develop scratch-resistant clearcoat maintaining gloss after 5 years
Solution: H12MDI-based formulation showed 92% gloss retention vs 78% with conventional isocyanates
Client: US-based catheter producer
Requirement: Biocompatible material with repeated sterilization capability
Result: HMDI elastomer survived 200+ autoclave cycles without degradation
Factor | Importance | Recommended Specification |
---|---|---|
Purity | Critical | >99.5% by HPLC |
Packaging | High | Nitrogen-inerted steel drums |
Technical Support | Essential | Formulation assistance available |
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