Water → Hexamethylene diisocyanate

HRID 491239Notes

Reaction equation

HRID 491239 reaction equation
[O:1]=[C:2]=[N:3][CH:4]1[CH2:13][C:12](C)(C)[CH2:11][C:6](C)([CH2:7][N:8]=[C:9]=[O:10])C1.[N-]=C=O.O>>[CH2:7]([N:8]=[C:9]=[O:10])[CH2:6][CH2:11][CH2:12][CH2:13][CH2:4][N:3]=[C:2]=[O:1]

Participants

4

Reactant 3

HCID 962WaterHCID 105034IsocyanateHCID 169132Isophorone diisocyanate

Product 1

HCID 13192Hexamethylene diisocyanate

Conditions

Temperature
60 °C

Procedure

The mixture was made to be at 70° C., and a mixture of 178 parts by mass of isophorone diisocyanate and 244 parts of hexamethylene-1,6-diisocyanate was added thereto, and a resultant mixture was stirred at 80° C. to 90° C. until a content of isocyanate thereof became 5.6% by mass. The prepolymer was cooled to 60° C., and 56 parts by mass of biuret polyisocyanate obtained from 3 mol of hexamethylene diisocyanate and 1 mol of water and 175 parts by mass of bisketimine obtained from isophorone diamine and acetone were sequentially added to obtain an aqueous dispersion of polyurethane.

Workup

  1. customto be at 70° C.
  2. additionwas added

Sources & evidence

ORD record
ord-2517a308436d45f2bfd4fcaf5b9531f1
Source dataset
uspto-grants-2009_05
Patent number
US07531238B2

Reaction notes

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