ʻO Diisocyanate (DDI) kahi diisocyanate aliphatic kū hoʻokahi me 36 carbon atom dimer fatty acid iwi kuamoʻo. Hāʻawi ka hale i ka DDI i ka maʻalahi a me ka hoʻopili ʻana ma mua o nā isocyanates aliphatic. Loaʻa i ka DDI nā waiwai haʻahaʻa, ʻaʻohe melemele, hoʻoheheʻe i ka hapa nui o nā mea hoʻoheheʻe organik, haʻahaʻa wai haʻahaʻa a haʻahaʻa viscosity. ʻO DDI kahi ʻano hana ʻelua Isocyanate, hiki iā ia ke hana me ʻelua a ʻoi aku paha nā pūhui hydrogen ikaika e hana i ka polymer. Hiki ke hoʻohana ʻia ka DDI i loko o ka rocket propellant, ka hoʻopau lole, ka pepa, ka ʻili a me ka pale lole, ka mālama mālama lāʻau, ka ipu uila a me ka hoʻomākaukau ʻana i nā waiwai kūikawā o ka polyurethane (urea) elastomers, adhesive a me ka sealant, etc.

Ma ka ʻoihana Fabric, hōʻike ʻo DDI i kahi manaʻo noi maikaʻi loa i ka wai-repellent a me nā waiwai palupalu i nā lole. ʻAʻole hiki ke hoʻohana ʻia no ka hoʻomākaukau ʻana i nā emulsion aqueous paʻa.

ʻO ka hoʻohanaʻana i ka 0.125% DDI e hāʻawi i ka lole i kahi palupalu paʻa; ʻO nā lole i mālama ʻia me nā mea hoʻomaʻemaʻe cationic hiki ʻole ke hoʻololi like ma hope o 26 holoi ʻana. He like a ʻoi aku ka maikaʻi o ka hoʻoheheʻe wai ʻana i ka wai me ka hoʻohana ʻana i ka 1%DDI e like me ka momona pyridine water repellent (AATCC test).

Hiki i ka DDI ke hoʻomaikaʻi i ka hopena o ka wai-repellent a me ka aila-repellent no nā lole fluorinated. Ke hoʻohana pū ʻia, hiki i ka DDI ke hoʻomaikaʻi nui i ka wai-repellent a me ka aila-repellent waiwai o nā lole.

Ua hōʻike ʻia nā loiloi ʻelua a me nā loiloi he ʻoi aku ka maikaʻi o ka DDI i ka holoi ʻana a me ka hoʻomaʻemaʻe maloʻo ma mua o ka fluoride a i ʻole nā ​​mea hoʻohui lole e like me nā mea antistatic.

ʻO DDI, i hoʻomākaukau ʻia mai ka dimer fatty acids, he ʻano ʻōmaʻomaʻo maʻamau, bio-renewable isocyanate. Ke hoʻohālikelike ʻia me ka honua isocyanate TDI, MDI, HDI a me IPDI, ʻaʻohe mea ʻawaʻawa a hoʻoulu ʻole ʻo DDI. Me ka kaulana o ka dimeric acid raw material ma Kina a me ka hoʻonui nui ʻana o ka poʻe i ka haʻahaʻa kalapona palekana hoʻokele waiwai a me ka hoʻomohala hoʻomau, ʻo ke koʻikoʻi o ka hoʻohana ʻana i nā kumuwaiwai bio-renewable no ka hoʻomākaukau ʻana i ka DDI ua puka mālie, he mea koʻikoʻi koʻikoʻi koʻikoʻi no ka hoʻolaha ʻana i ka ulu ʻana o ka ʻoihana polyurethane.