Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-02-06
1976-01-13
Czaja, Donald E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C08L 6702
Patent
active
039323455
ABSTRACT:
There is disclosed an improvement in the pigmenting of polyesters derived from free dicarboxylic acids and glycols employing a slurry consisting of pigmenting agent and a glycol which improvement comprises heating said slurry to a temperature ranging from about 90.degree. C. to about 1.degree. to 2.degree. C. below the boiling point of the glycol constituent and adding the heated slurry to the polyester forming reactants when the temperature of said reactants ranges from about 210.degree. to 240.degree. C. and the pressure in the reaction vessel employed ranges from about 20 to 70 pounds per square inch gauge.
REFERENCES:
patent: 2962466 (1960-11-01), Parnell
patent: 3002942 (1961-10-01), Zoetbroad et al.
patent: 3275590 (1966-09-01), Thomas
Brunner F. W.
Czaja Donald E.
Person S. M.
The Goodyear Tire & Rubber Company
Ward J. P.
LandOfFree
Method for preparing pigmented polyesters wherein the pigment gl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for preparing pigmented polyesters wherein the pigment gl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing pigmented polyesters wherein the pigment gl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-745852