Use of isophoronediamine isomer mixtures in polyaddition resins

Details Use of isophoronediamine isomer mixtures in polyaddition resins Use of isophoronediamine isomer mixtures in polyaddition resins

C - Chemistry, Metallurgy

08

K

C08K 5/17 (2006.01) C08G 18/32 (2006.01) C08G 59/50 (2006.01) C08J 3/24 (2006.01)

Patent

CA 2093374

ABSTRACT OF THE DISCLOSURE The invention is directed towards the use of isophoronediamine isomer mixtures consisting of more than 40 % preferably more than 50 to 70 %, of the trans- and less than 60 %, preferably less than 50 to 30 %, of the cis-isomer as reactant in polyaddition resins selected from epoxy, polyurethane and polyurea resins. As curing agents in epoxy resins compared with previously known isomer mixtures, the isomer mixtures lead to an extended pot life with simultaneously reduced maximum curing temperature and therefore reduced shrinkage problems. The isomer mixtures are also suitable as amine components with reduced reactivity for the chain extension of polyurethane/polyureas.

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