Pentaerythritol → HCID 86761498, compound

HRID 1645198Notes

Reaction equation

OC[C:3]([CH2:8][OH:9])(CO)CO.C([CH:12]=[C:13]([CH3:20])[C:14]([O:16][N:17]=[C:18]=[O:19])=[O:15])C>>[C:14]([OH:16])(=[O:15])[C:13]([CH3:20])=[CH2:12].[C:14]([OH:16])(=[O:15])[C:13]([CH3:20])=[CH2:12].[C:14]([OH:16])(=[O:15])[C:13]([CH3:20])=[CH2:12].[C:14]([OH:16])(=[O:15])[C:13]([CH3:20])=[CH2:12].[NH2:17][C:18]([O:9][CH2:8][CH3:3])=[O:19]

Participants

Reactant 2

HCID 8285Pentaerythritol

HCID 57197251HCID 57197251, compound

Product 1

HCID 86761498HCID 86761498, compound

Procedure

To 5000 g (0.31 mol) of dried macrotetrol (e.g., polycaprolactone, MW 16.000 g/mol, pentaerythritol initiated), 193.8 g (1.25 mol) of isocyanato ethylmethacrylate IEM (Karenz Moi) was added dropwise at 110° C. during 0.5 hour. The reaction was carried out at 110° C. until absorption by an isocyanate group at a wavelength of 2250 cm−1 in the infrared absorption spectrum was no longer observed in order to obtain an urethane tetramethacrylate.

Workup

customThe reaction was carried out at 110° C. until absorption by an isocyanate group at a wavelength of 2250 cm−1 in the infrared absorption spectrum

Sources & evidence

ORD record: ord-3533507df75c447d9c85dcf9d3195065
Source dataset: uspto-grants-2012_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08124705B2

Reaction notes

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