منابع مشابه
Isocyanate asthma: respiratory symptoms caused by diphenyl-methane di-isocyanate.
Tanser, A. R., Bourke, M. P., and Blandford, A. G. (1973). Thorax, 28, 596-600. Isocyanate asthma: respiratory symptoms caused by diphenyl-methane di-isocyanate. We investigated 57 employees of a factory where diphenyl-methane di-isocyanate (MDI) was used to prepare the materials for making rigid polyurethane foam. Four employees had developed hypersensitivity to MDI. Two had severe, and one mo...
متن کاملIsocyanate asthma: respiratory symptoms due to 1,5-naphthylene di-isocyanate.
Occupationally related asthma developing in three patients due specifically to exposure to 1,5-naphthylene di-isocyanate (NDI), a hot curing agent used in manufacturing rubber, has been confirmed for the first time using bronchial provocation testing. This substance has been thought to be safer than toluene di-isocyanate (TDI) and diphenylmethane di-isocyanate (MDI) because of its relatively hi...
متن کاملOverview on Isocyanate-induced Health Disorders
The determination of isocyanates concentrations in air is complicated by thepresence of these substances as monomers and oligomers as well as in thevapor and aerosol phases. Direct-reading instruments (DRIs) are available fordetermining the diisocyanate concentrations in workplace air, but they arecalibrated for the monomers only. Industry uses polymeric diisocyanateswhich c...
متن کاملCO2 conversion to isocyanate via multiple N-Si bond cleavage at a bulky uranium(III) complex.
The reaction of the sterically saturated uranium(III) tetrasilylamido complex [K(18c6)][U(N(SiMe3)2)4] with CO2 leads to CO2 insertion into the U-N bond affording the stable U(IV) isocyanate complex [K(18c6)][U(N(SiMe3)2)3(NCO)2]n that was crystallographically characterized. DFT studies indicate that the reaction involves the [2+2] cyclo-addition of a double bond of O=CO to the U-N(SiMe3)2 bond...
متن کاملBiomarkers Predicting Isocyanate-Induced Asthma
THREE DIISOCYANATES CAN CAUSE OCCUPATIONAL ASTHMA (OA): toluene diisocyanate (TDI), 4,4 diphenylmethane diisocyanate (MDI), and 1,6-hexamethylene diisocyanate (HDI). We analyzed potential biomarkers of isocyanate-induced OA, based on investigated immunologic, genetic, neurogenic, and protein markers, because there is no serological testing method. The prevalence of serum IgG to cytokeratin (CK)...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1956
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.77.1411