Process for preparing rosin and colorless rosin comprising dispr

Details Process for preparing rosin and colorless rosin comprising dispr Process for preparing rosin and colorless rosin comprising dispr

1994-07-26

1995-03-07

Foelak, Morton

Chemistry: natural resins or derivatives; peptides or proteins;

Natural resins or derivatives

Rosin or derivative used as starting material in process, or...

530212, 530213, 530223, 530226, 530228, C09F 700, C09F 104

Patent

active

053959205

ABSTRACT:
The present invention relates to a process for preparing a rosin ester, which comprises esterifying a purified product of a disproportionated rosin with an alcohol, and then subjecting the esterified rosin to dehydrogenation in the presence of a dehydrogenating catalyst, a process for preparing a rosin ester, which comprises heating a purified rosin and an alcohol in the presence of a disproportionating catalyst, simultaneously subjecting the resulting rosin to disproportionation and esterification, dehydrogenating the reactant in the presence of a dehydrogenating catalyst, and thereafter adding an organic phosphorus compound to the reaction system, a process for preparing a colorless rosin, which comprises simultaneously subjecting a purified rosin to disproportionation and dehydrogenation in the presence of a catalyst, and then adding an organic phosphorus compound to the reaction system and a process for preparing a colorless rosin, which comprises dehydrogenating a purified disproportionated rosin in the presence of a dehydrogenating catalyst. According to the present invention, rosin esters and colorless rosins which have remarkably improved various properties from the viewpoints of color tone, odor, stability and the like can be cheaply provided.

REFERENCES:
patent: 3313754 (1967-04-01), Logan
patent: 3664981 (1972-05-01), Mahlman
patent: 4643848 (1987-02-01), Thomas et al.
patent: 4847010 (1989-07-01), Maeda et al.
patent: 4906733 (1990-03-01), Kodama et al.
patent: 5175250 (1992-12-01), Hazen
Supplementary European Search Report in European Patent Appln. No. 93900394.3 mailed Jul. 8, 1994.

Affiliated with

Also associated with

Rating

Process for preparing rosin and colorless rosin comprising dispr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing rosin and colorless rosin comprising dispr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing rosin and colorless rosin comprising dispr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1406839