Diisocyanate (DDI) bụ aliphatic diisocyanate pụrụ iche nke nwere azụ carbon atom dimer 36 fatty acid. Nhazi ya na-enye DDI mgbanwe na njikọta ka mma karịa isocyanates aliphatic ndị ọzọ. DDI nwere ihe onwunwe nke obere nsí, enweghị odo odo, na-agbaze na ọtụtụ ihe mgbaze organic, obere mmetụta mmiri na obere viscosity. DDI bụ ụdị ọrụ abụọ Isocyanate, ọ nwere ike ịrụ ọrụ na ngwakọta hydrogen abụọ ma ọ bụ karịa na-arụ ọrụ iji mepụta polymer. Enwere ike iji DDI mee ihe na rocket propellant siri ike, imecha ákwà, akwụkwọ, akpụkpọ anụ na ihe mgbochi ákwà, ọgwụgwọ nchekwa osisi, ite eletriki na nkwadebe nke ihe pụrụ iche nke polyurethane (urea) elastomers, ihe nrapado na ihe mkpuchi, wdg.

N'ụlọ ọrụ ákwà, DDI na-egosi ezigbo ojiji n'ihe ndị na-egbochi mmiri na ihe ndị na-eme ka ákwà dị nro. Ọ naghị emetụta mmiri karịa isocyanates na-esi ísì ụtọ, a pụkwara iji ya kwadebe mmiri emulsions siri ike.

Ojiji nke 0.125%DDI na-eme ka ákwà ahụ dị nro nke na-adịgide adịgide; Ákwà ndị e ji ihe nro cationic na-adịghị adịgide adịgide gwọọ nwere mgbanwe yiri nke ahụ mgbe e sachara ha ugboro 26. Ihe na-egbochi mmiri ákwà nke ejiri 1%DDI mee nwere otu ma ọ bụ mmetụta ka mma nke ihe na-egbochi mmiri dị ka ihe na-egbochi mmiri abụba pyridine (ule AATCC).

DDI nwere ike ime ka mmetụta nke ákwà ndị na-egbochi mmiri na nke na-egbochi mmanụ dịkwuo mma. Mgbe ejiri ya mee ihe ọnụ, DDI nwere ike ime ka ákwà ndị na-egbochi mmiri na nke na-egbochi mmanụ dịkwuo mma nke ukwuu.

Ma nyocha ụlọ nyocha na nke ubi egosila na DDI nwere ike iguzogide ịsa na ihicha nkụ karịa fluoride ma ọ bụ ihe mgbakwunye ákwà dịka ihe ndị na-egbochi njigide.

DDI, nke e ji dimer fatty acids kwadebe, bụ ụdị isocyanate akwụkwọ ndụ akwụkwọ ndụ, nke a na-emegharị emegharị. Ma e jiri ya tụnyere isocyanate TDI, MDI, HDI na IPDI zuru ụwa ọnụ, DDI anaghị egbu egbu ma ọ bụ na-akpali akpali. Site na ewu ewu nke ihe ndị e ji dimeric acid emepụta na China na mmụba nke nlebara anya ndị mmadụ na-enweta na akụ na ụba nchekwa gburugburu ebe obibi dị ala na mmepe na-adịgide adịgide, mkpa ọ dị iji ihe ndị e ji biomechable emeghari iji kwadebe DDI apụtala nke nta nke nta, nke nwere mkpa bara uru maka ịkwalite mmepe nke ụlọ ọrụ polyurethane.