Diad leksab et say panaggawa na PAPI {0} .
Say PAPI (a krudo MDI) so napapawala ed parehon paraan a singa say MDI likud a say ratio na karakel na aniline so mas melag la{_0} Say pankakasakey na PAPI tan say karakel na asosasyon na PAPI tan MDnia-mablin tuloy, apasakey ya ad-amin, a talagan apasakey, a singa, apasakey ya ala-mado, a say ala-maan et duaray stepnen. diamina ed silong na ginawa na sakey ya asido na sakey a Lewis, insan say ginawa na polimine so nipaarap ed saray reaksion na poli pian nagamoran so PAPIT___33}} diad saray pankakasakey na polimina ya alaokan na ngalngalin 50 % na satan et nayarin say kontrolado na satan et say 50 . formadide, salanti, say karakel na substansia{6{}} et denesidi itan a sanen say molar ya anniline et 1:75, manga 50% na panag-apag-apag ed saray sinyal}, say inka-interamite ed sinyal, so ginawan ka-gramon, say inka-interamite ed sigmi-alsamo, so ginawan ka-gramon, say inka-interamite ed sinisimon, say inka-interamite, so ginawan ka-intinomina, so ginawan ka-gramon, say anitora ya insipsip, say animon -inlara-minaimon ka-inyramisa, say anira-dostials, so anipos na kala-ngatan si-karain, say animon insiim-doro, so anira-alsa nen say intira-dom. Say 1{13}6 anggad {12} Say pan-uman na O so mipara ed panag-operaan parad polimina so mipara ed saray MD{} . formadehyde ya inkarga na saray materyales{20}}} No say ratio na karakel na aniline/pormar na substansia et 4/12}, say sintes ya pomilana et walaan na manga 75% na pantutugma na diamiin. Kaslakan, say proseso na pankakasakey na MDI tan PAPI so inadapta.