Propylene Glycol → HCID 12142619, compound

HRID 1064553Notes

Reaction equation

HRID 1064553 reaction equation
[CH2:1](O)[CH:2]([OH:4])[CH3:3].[CH3:6][C:7](=[O:11])CCC.[N-:12]=[C:13]=[O:14]>>[OH:4][CH:2]([CH3:3])[CH2:1][NH:12][C:13]([O:11][CH2:7][CH3:6])=[O:14]

Participants

4

Reactant 3

HCID 1030Propylene GlycolHCID 78952-PentanoneHCID 105034Isocyanate

Product 1

HCID 12142619HCID 12142619, compound

Conditions

Temperature
52 °C

Procedure

999.28 Parts propylene glycol and 434.85 parts 2-pentanone were added to a mixing vessel equipped with a condenser, nitrogen blanket, agitator, and addition funnel. The contents were heated to about 52° C., followed by addition of 1450.97 parts MONDUR MR polymeric isocyanate while keeping the exotherm below 75° C. The addition funnel was next rinsed with 154.87 parts 2-pentanone. The reaction mixture was held at 75° C. for one to two hours until the isocyanate was consumed (thereby forming a beta-hydroxypropyl urethane polymer), then cooled to 60° C. while adding 759.92 parts propylene glycol monomethyl ether (thereby forming a beta-hydroxypropyl urethane solution). The resulting blocked polymeric isocyanate solution was mixed for 30 minutes and stored in a plastic storage vessel.

Workup

  1. customequipped with a condenser
  2. additionnitrogen blanket, agitator, and addition funnel
  3. customthe exotherm below 75° C
  4. washThe addition funnel was next rinsed with 154.87 parts 2-pentanone
  5. waitThe reaction mixture was held at 75° C. for one to two hours until the isocyanate
  6. customwas consumed (

Sources & evidence

ORD record
ord-da446e1fc8db49fda914c234266ee1ae
Source dataset
uspto-grants-2005_11
Patent number
US06969754B2

Reaction notes

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