Diisocyanate (DDI) yog ib qho aliphatic diisocyanate tshwj xeeb nrog 36 carbon atom dimer fatty acid backbone. Cov qauv no ua rau DDI yooj ywm thiab lo dua li lwm cov aliphatic isocyanates. DDI muaj cov khoom uas tsis muaj tshuaj lom, tsis muaj daj, yaj hauv feem ntau cov organic solvents, tsis tshua muaj dej thiab tsis tshua muaj viscosity. DDI yog ib hom Isocyanate uas muaj ob qho kev ua haujlwm, nws tuaj yeem ua haujlwm nrog ob lossis ntau dua cov hydrogen sib xyaw ua ke los ua polymer. DDI tuaj yeem siv rau hauv cov khoom siv foob pob hluav taws, cov ntaub tiav, ntawv, tawv thiab ntaub tiv thaiv, kev kho ntoo, hluav taws xob potting thiab kev npaj cov khoom tshwj xeeb ntawm polyurethane (urea) elastomers, nplaum thiab sealant, thiab lwm yam.

Hauv kev lag luam ntaub, DDI qhia tau tias muaj kev siv zoo heev rau cov khoom uas tsis ntub dej thiab ua rau cov ntaub mos. Nws tsis tshua muaj kev cuam tshuam rau dej dua li cov isocyanates uas muaj ntxhiab thiab siv tau los npaj cov emulsions dej ruaj khov.

Kev siv 0.125% DDI ua rau cov ntaub mos muag thiab ruaj khov; Cov ntaub uas kho nrog cov tshuaj cationic softeners uas tsis ruaj khov muaj qhov yooj ywm zoo sib xws tom qab ntxuav 26 zaug. Cov ntaub uas tsis ntub dej siv 1% DDI muaj cov nyhuv tsis ntub dej zoo ib yam lossis zoo dua li cov tshuaj tsis ntub dej rog pyridine (AATCC test).

DDI tuaj yeem txhim kho cov nyhuv ntawm cov tshuaj fluorine uas tiv thaiv dej thiab roj ntawm cov ntaub. Thaum siv ua ke, DDI tuaj yeem txhim kho cov yam ntxwv ntawm cov ntaub uas tiv thaiv dej thiab roj.

Ob qho kev ntsuam xyuas hauv chaw kuaj mob thiab thaj chaw tau qhia tias DDI muaj kev tiv taus zoo dua rau kev ntxuav thiab kev ntxuav qhuav dua li cov tshuaj fluoride lossis cov khoom siv ntxiv rau ntaub xws li cov neeg sawv cev tiv thaiv hluav taws xob.

DDI, npaj los ntawm dimer fatty acids, yog ib hom isocyanate ntsuab, bio-renewable. Piv nrog rau universal isocyanate TDI, MDI, HDI thiab IPDI, DDI tsis muaj tshuaj lom thiab tsis ua rau muaj kev cuam tshuam. Nrog rau qhov nrov ntawm dimeric acid raw cov ntaub ntawv hauv Suav teb thiab tib neeg txoj kev saib xyuas rau kev tiv thaiv ib puag ncig uas tsis muaj carbon tsawg thiab kev txhim kho kom ruaj khov, qhov tseem ceeb ntawm kev siv cov ntaub ntawv bio-renewable raw los npaj DDI tau maj mam tshwm sim, uas muaj qhov tseem ceeb rau kev txhawb nqa kev txhim kho kev lag luam polyurethane.