Ko te Diisocyanate (DDI) he diisocyanate aliphatic ahurei me te 36 ngā ngota waro dimer ngako pūtake. Nā te hanganga ka pai ake te ngāwari me te piri o te DDI i ētahi atu isocyanate aliphatic. He iti te paitini o te DDI, kāore e kōwhai, ka rewa i roto i te nuinga o ngā whakarewa waro, he iti te aro ki te wai me te iti te matotoru. Ko te DDI he momo Isocyanate mahi rua, ka taea te mahi me te rua, neke atu rānei o ngā matū hauwai hohe hei hanga polymer. Ka taea te whakamahi i te DDI ki te whakarewa rōkete totoka, te whakaoti kakahu, te pepa, te hiako me te ārai kakahu, te maimoatanga tiaki rakau, te kohua hiko me te whakarite i ngā āhuatanga motuhake o te polyurethane (urea) elastomers, te piripiri me te hiri, me ētahi atu.

I roto i te umanga kakahu, he tino pai te whakamahinga o te DDI i roto i ngā āhuatanga ātete-wai me te whakangawari i ngā kakahu. He iti ake te aro ki te wai i ngā isocyanates kakara, ā, ka taea te whakamahi hei hanga i ngā emulsions wai pumau.

Mā te whakamahinga o te 0.125%DDI ka roa te ngohengohe o te papanga; he rite tonu te ngāwari o ngā papanga e whakamahia ana he whakangawari cationic kāore e roa te mau i muri i te 26 horoinga. He rite tonu, he pai ake rānei te pānga ārai wai o te ātete wai o te papanga e whakamahi ana i te 1%DDI ki te ātete wai o te ngako pyridine (whakamātautau AATCC).

Ka taea e te DDI te whakapai ake i te pānga o te ārai wai me te ārai hinu mō ngā kakahu whai fluorine. Ina whakamahia ngātahi, ka taea e te DDI te whakapai ake i ngā āhuatanga ārai wai me te ārai hinu o ngā kakahu.

Kua whakaatuhia e ngā aromatawai taiwhanga me ngā aromatawai parae he pai ake te ātete o te DDI ki te horoi me te horoi maroke i te fluoride, i ngā tāpiringa papanga rānei pērā i ngā kaihoko antistatic.

Ko te DDI, i hangaia mai i ngā waikawa ngako dimer, he momo isocyanate matomato, ka taea te whakahou i te koiora. Ki te whakatauritea ki te isocyanate whānui TDI, MDI, HDI me te IPDI, kāore te DDI i te paitini, kāore hoki e whakaohooho. I te rongonuitanga o ngā rauemi mata waikawa dimeric i Haina me te aro nui o te tangata ki te ōhanga tiaki taiao waro iti me te whanaketanga tauwhiro, kua puta haere te hiranga o te whakamahi i ngā rauemi mata ka taea te whakahou i te koiora hei whakarite i te DDI, he mea nui tēnei mō te whakatairanga i te whanaketanga o te umanga polyurethane.