METHOD OF EVALUATING QUALITY OF MINERAL-BASED SOAP GREASE DURING PROLONGED STORAGE IN SEALED CONTAINER Russian patent published in 2014 - IPC G01N33/30 

FIELD: chemistry.

SUBSTANCE: initial values of the most information bearing quality factors of the grease are determined. Containers with grease are placed into a climatic heating and cooling chamber. A 24 hour cycle, during which temperature is measured from minus 60°C to 60°C is taken as one year of storage. After each cycle, values of factors identical to the initial values are determined in said heating and cooling chamber. The value of each of said factors corresponding to a year of storage in natural conditions is calculated using a given formula using given software. Testing continues for values of factors within the range of allowable values and if at least one of the factors obtained by calculation deviates from the allowable value, the shelf life of the grease is taken to be the number of years numerically equal to the number of cycles preceding the change in the quality factors which does not correspond to standards.

EFFECT: high accuracy, reliability, efficiency and low consumption of grease.

2 cl, 1 ex, 2 tbl