Pentaerythritol → rosin PE

HRID 426897

Reaktionsgleichung

Reaktionsgleichung von HRID 426897
[CH:1]1[CH:6]=[CH:5][C:4](/[CH:7]=[CH:8]/[CH2:9][O:10][C@@H:11]2[O:16][C@H:15]([CH2:17][OH:18])[C@@H:14]([OH:19])[C@H:13]([OH:20])[C@H:12]2[OH:21])=[CH:3][CH:2]=1.[OH:22][CH2:23][C:24]([CH2:29][OH:30])([CH2:27][OH:28])[CH2:25][OH:26]>>[CH:1]1[CH:2]=[CH:3][C:4](/[CH:7]=[CH:8]/[CH2:9][O:10][C@@H:11]2[O:16][C@H:15]([CH2:17][OH:18])[C@@H:14]([OH:19])[C@H:13]([OH:20])[C@H:12]2[OH:21])=[CH:5][CH:6]=1.[OH:22][CH2:23][C:24]([CH2:29][OH:30])([CH2:27][OH:28])[CH2:25][OH:26]

Komponenten

3

Edukt 2

HCID 8285PentaerythritolHCID 5280656(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(E)-3-phenylprop-2-enoxy]oxane-3,4,5-triol

Produkt 1

HCID 131711645rosin PE

Reaktionsbedingungen

Temperatur
220 °C

Versuchsvorschrift

To a suitable reactor are introduced 500 parts of WW rosin which is then heated under nitrogen to 220° C. Thereafter, 67.5 parts of technical pentaerythritol (PE) are added. The temperature is next raised to between 270° C. and 275° C., and stirred for one hour, at which time the acid number is found to be equal to 103. A catalyst, namely, 0.25 part of p-touenesulfonic acid is then added to the reaction mixture. The reaction temperature is maintained for a total of 11 hours at 275° C. At the end of this period, esterification had been found to be substantially completed, producing a rosin/PE ester having an acid number equal to 13, an N color, and an 84° C. Ring and Ball softening point.

Aufarbeitung

  1. temperatureThe temperature is next raised to between 270° C. and 275° C.
  2. additionA catalyst, namely, 0.25 part of p-touenesulfonic acid is then added to the reaction mixture
  3. temperatureThe reaction temperature is maintained for a total of 11 hours at 275° C

Quellen und Nachweise

ORD-Eintrag
ord-88c464ea96574c60a9b55a35c185b5d4
Quelldatensatz
uspto-grants-1979_10
Patentnummer
US04172070

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