433497
聚(丙二醇)，甲苯基-2,4-二异氰酸酯封端
average Mn ~2,300 (narrow MW distribution), isocyanate ~3.6 wt. %
别名:
甲苯二异氰酸酯-聚丙二醇共聚物, 聚丙二醇-甲苯二异氰酸酯共聚物
InChI key
SKQGWWNTEKONHY-UHFFFAOYSA-N
SMILES string
CC(O)CO.Cc1ccc(cc1N=C=O)N=C=O
form
viscous liquid
mol wt
average Mn ~2,300 (narrow MW distribution), degree of polymerization ~34
composition
isocyanate, ~3.6 wt. %
hardness
80 (Shore A, reacted with MOCA)
impurities
<0.1% residual TDI
refractive index
n20/D 1.4742
viscosity
≤1,700 cP(40 °C)(lit.)
density
1.05 g/mL at 25 °C
Quality Level
Application
导辊和粘合剂加工垫。
Features and Benefits
粘度比常规聚氨酯低聚物更低。芳族异氰酸酯比脂族异氰酸酯更加活泼。芳族异氰酸酯的光稳定性不如脂族异氰酸酯。
Physical form
聚氨酯预聚物。
signalword
Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
target_organs
Respiratory system
存储类别
10 - Combustible liquids
wgk
WGK 3
flash_point_f
235.4 °F - closed cup
flash_point_c
113 °C - closed cup
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The authors discuss experience in 168 operations for extirpation and segmental resection of affected bronchi in children with bronchiectases. To prevent recanalization of the bronchus after its segmental resection and to prevent the formation of an abscess in the isolated
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