Nimero y'ikibazo: 89-32-7 PMDA Pyromellitic dianhydride

Intangiriro ngufi

Pyromellitic dianhydride (PMDA), ibicuruzwa byuzuye ni umweru cyangwa kristu z'umuhondo muto. Iyo bishyizwe mu mwuka utose, bikurura vuba ubushuhe buva mu mwuka bigashyirwamo aside Pyromellitic. Bishongeshejwe muri dimethyl sulfoxide, dimethylformamide, acetone n'ibindi bintu bishongesha ibinyabuzima, ntibishongeshwa muri ether, chloroforme na benzene. Bikoreshwa cyane cyane nk'ibikoresho fatizo bya polyimide, hamwe n'ibikoresho bihuza mu gukora epoxy curing agent no gukuraho polyester resin.

Aside ya Pyromellitic (PMA), izwi kandi nka 1,2,4,5-benzenetetracarboxylicacid, kristu y'umweru kugeza ku muhondo, ikoreshwa cyane cyane mu gukora polyimide, octyl pyromelliate, nibindi, ni yo mashini nyamukuru yo gukora umuti uvura matting.