FIELD: fat-and-oil industry, in particular far acid production.
SUBSTANCE: claimed method includes vacuum distillation under residual pressure of 0.67-1.33 kPa and at temperature of 220-230°C. Distillation is carried out in presence of boric acid in amount of 0.5-2.0 % and ionol in amount of 0/1-0/2 % based on the acid mass.
EFFECT: stabilized processes of fat acid oxidation and polymerization.
1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS OF OBTAINING MIXTURE OF HIGHER FATTY ACIDS | 2006 |
|
RU2324727C1 |
| HIGH-ACIDITY OIL CONCENTRATE PREPARATION METHOD | 2003 |
|
RU2235123C1 |
| 0 |
|
SU555082A1 | |
| METHOD OF DISTILLATION OF CRUDE GLYCEROL | 2002 |
|
RU2210560C1 |
| METHOD OF PREPARING CONCENTRATE OF PROCESS LUBRICANT FOR WORKING OF METALS | 2002 |
|
RU2213130C1 |
| METHOD OF PREPARING C18-C25 SYNTHETIC ALIPHATIC ACIDS METHYL ESTERS | 0 |
|
SU727623A1 |
| 0 |
|
SU407942A1 | |
| METHOD OF OBTAINING SECONDARY HIGHER FATTY ALCOHOLS C13-C17 | 0 |
|
SU1104127A1 |
| HIGHER UNSATURATED FATTY ACID MIXTURE PREPARATION METHOD | 2004 |
|
RU2264444C1 |
| REDUCTION OF VISCOSITY OF REACTION-ABLE HEAVY BYPRODUCTS DURING OBTAINING 1,3-PROPANDIOL | 2003 |
|
RU2343141C2 |
