Substituted p,p'-methylene-bis-anilines

Details Substituted p,p'-methylene-bis-anilines Substituted p,p'-methylene-bis-anilines

C - Chemistry, Metallurgy

08

G

400/113, 402/142

C08G 18/83 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 59/50 (2006.01)

Patent

CA 1226302

ABSTRACT OF THE DISCLOSURE SUBSTITUTED p,p'-METHYLENE-BIS-ANILINES Chain extension or cross-linking agents for poly- urethanes or epoxide resins are disclosed, which agents comprise 2,2'-dichloro-6,6'-diethylmethylene-bis-aniline or a mixture thereof with a compound of the formula: Image wherein R1, R2, R3 and R4 are the same or different and each represents a straight-chain or branched alkyl radical having from 2 to 4 C atoms, or R1 and/or R3 is chlorine and the remaining R's have the above-mentioned signifcance. A process for the production of 2,2'-dichloro-6,6'-diethyl- methylene-bis-aniline or a mixture as specified above is also disclosed, in which 2-ethyl-6-chloroaniline is condensed with itself or with an aniline having the formula: Image wherein R5 and R6 are the same or different and each represents straight-chain or branched alkyl having from 2 to 4 C atoms, or R5 can also represent chlorine, in an acidic medium in the presence of formaldehyde or a compound which can form formal- dehyde. The compounds in the mixture can be condensation products of two molecules of such aniline derivatives.

485743

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