Reaction #3765233
Related Literature (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US04172070
Conditions: temp:220.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
Procedure: 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. The temperature is next raised to between 270° C. and 275° C. 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
Source ID: ord-88c464ea96574c60a9b55a35c185b5d4