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重要文件

256439

Sigma-Aldrich

4,4′-亚甲基双(异氰酸苯酯)

98%

同義詞:

4,4′-MDI, 二苯基甲烷-4,4′-二异氰酸酯

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About This Item

線性公式:
CH2(C6H4NCO)2
CAS號碼:
分子量::
250.25
Beilstein:
797662
EC號碼:
MDL號碼:
分類程式碼代碼:
12162002
PubChem物質ID:
NACRES:
NA.23

品質等級

化驗

98%

形狀

solid

反應適用性

reagent type: cross-linking reagent

bp

200 °C/5 mmHg (lit.)

mp

42-45 °C (lit.)

密度

1.18 g/mL at 25 °C (lit.)

儲存溫度

−20°C

SMILES 字串

O=C=Nc1ccc(Cc2ccc(cc2)N=C=O)cc1

InChI

1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2

InChI 密鑰

UPMLOUAZCHDJJD-UHFFFAOYSA-N

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一般說明

4,4′-亚甲基双(异氰酸苯酯)(MDI) 是一种芳香族二异氰酸酯类单体,广泛应用于聚氨酯塑料、绝热泡沫、涂料、粘合剂和密封剂的生产。由于两个异氰酸酯官能团的存在,它具有很高的反应活性。MDI以良好的强度、耐用性和耐化学和环境损伤而著称,这些性质使其可用于树脂组合物、平版印刷版、涂层膜、光学膜、图像显示设备、半导体设备和聚氨酯泡沫生产。

應用

4,4′-亚甲基双(苯基异氰酸酯)可用作起始材料来合成:
  • 适用于医疗植入物的聚氨酯阳离子聚合物。
  • 一种用于制备自愈合聚氨酯弹性体的预聚物。
它还可作为交联剂用于合成具有改善的机械性能的 PEBA(聚醚嵌段酰胺)共聚物,这种聚合物主要用于鞋底、医用管、航天部件和化学分离。此外,MDI 也可作为交联剂用于共价修饰氧化石墨烯(GO),并可增强聚苯烯涂层的耐腐蚀性。由此产生的聚苯乙烯GO-MDI复合涂层的耐磨性优于未修饰聚苯烯涂层。这种方法可用于改善各种工业和生物医学应用中材料的耐用性。

象形圖

Health hazardExclamation mark

訊號詞

Danger

危險分類

Acute Tox. 4 Inhalation - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

411.8 °F - closed cup

閃點(°C)

211 °C - closed cup

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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Global Trade Item Number

庫存單位GTIN
256439-500G4061826058138
256439-50G4061826058145
256439-5KG4061833605783

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