4,4 ‘- bis (butylamino diphenylmethane) CAS 5285-60-9 , molecular formula: C21H30N2.

MDBA is a liquid secondary diamine, in which the hydrogen atom on each amino group is replaced by a secondary butyl. In a limited space, the combination of active hydrogen atoms and secondary butyl produces many unique properties. The amino group forms urea bonds that affect the hard segment, while butyl acts as an internal plasticizer. It is connected to the polymer matrix and neither leaches nor precipitates. At the same time, alkyl increases the solubility of diamine, making it almost capable of mixing with any polyol and polyamine.

Chinese name: 4,4 ‘- bis (butylamino diphenylmethane)

Foreign name: MDBA

CAS number: 5285-60-9

EINECS: 226-122-6

Molecular formula: C21H30N2

Molecular weight: 310.48

Physical and chemical properties

Appearance: Dark amber

Density: 1.4g/cm3

Boiling point: 554.1 ° C at 760 mmHg

Flash point: 288.9 ° C

Steam pressure: 2.56E-12mmHg at 25 ° C

Purpose

4,4 ‘- bis (butylamino diphenylmethane) can be used in hard foam, soft foam, coatings, adhesives, sealants, elastomers, with a typical usage of 1-5% of polyols; 4,4 ‘- bis (butylamino diphenylmethane) can also be used for spraying polyurea and various compounds used for metal and concrete repair

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