1)  Isocyanic acid, polymethylenepolyphenylene ester
异氰酸聚亚甲基聚亚苯基酯
2)  Poly [methylene (polyphenyl iso-cyanate)]
异氰酸聚亚甲基聚亚苯基酯
3)  Isocyanic acid, polymethylenepolyphenylene ester, polymer with .alpha.-hydro-.omega.-hydroxypoly [oxy(methyl-1,2-ethanediyl)] ether with 2,2-bis(hydroxymethyl)-1,3-propanediol
异氰酸聚亚甲基聚亚苯基酯与α-氢-&omega
4)  acid, polymethylenepolyphenylene ester,polymer with alpha-hydro- omega-hydroxypoly[oxy(methyl-1,2-ethanediyl)] ether with2,2-bi
异氰酸聚亚甲基聚亚苯基酯与α-氢-&omega
5)  Isocyanic acid, polymethylenepolyphenylene ester, polymer with .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)]and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol
异氰酸聚亚甲基聚亚苯基酯与α-氢代-&omega
6)  Isocyanic acid, polymethylenepolyphenylene ester, polymer with oxybis[propanol]
异氰酸聚亚甲基聚亚苯基酯与氧基双[丙醇]的聚合物
参考词条
补充资料:异氰酸聚亚甲基聚亚苯基酯
分子式:C6H4(NCO)CH2C6H4(NCO)C8H5NO)X
分子量:350-400
CAS号:9016-87-9

性质:褐色透明液体。相对密度为1.200,折光率1.6240。蒸气压(25℃)为2.13×10-5kPa。

制备方法:将苯胺和甲醛按摩尔比1.6-2.0:1配合,再配入盐酸作为缩作催化剂,加入缩合器中,于90-110℃反应30-60min,得到一定比例二苯基甲烷-4,4'-二胺和多次甲基多苯基甲胺,再经光气化、分离、提纯即可得PAPI和MDI。原料消耗定额:甲醛(100%)150kg/t、苯胺750kg/t、光气850kg/t。

用途:用于制聚氨酯材料,广泛应物于建筑行业、汽车工业、电器工业等作保温材料或垫褥等。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。