Process for preparing pulverulent coating composition based upon

Details Process for preparing pulverulent coating composition based upon Process for preparing pulverulent coating composition based upon

1986-03-18

1987-08-18

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

525432, 528495, 528310, 528323, 528326, C08G 6946

Patent

active

046878386

ABSTRACT:
The invention concerns an improved precipitation process in the manufacture of coating powders based on polyamides having at least ten aliphatically bound carbon atoms per carbonamide group. Rapid cooling takes place with stirring mainly by distilling the ethanol solvent until the temperature of precipitation is set in the range from 90.degree. to 113.degree. C. With the beginning of the saturation limit (about 125.degree. C.), the temperature difference between the coolant in the jacket and the solution inside is maintained at most at .+-.3.degree. C. The solution is maintained during the precipitation stage at constant temperature (isothermal procedure) by further distillation of the ethanol.

REFERENCES:
patent: 4334056 (1982-06-01), Meyer et al.

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