| 摘要 |
FIELD: domestic chemistry. SUBSTANCE: cream has gatch or petrolatum removing oil filtrate - waste of paraffin or ceresine production at drop falling point 40-60 C 80-90 wt.-%, dye 0.5-3.5 wt.-%, and white-spirit or turpentine 9.5-16.5 wt.-%. Paraffin or ceresine waste is put into reactor, heated to 65-70 C and stirred. Dye is dissolved preliminary in organic solvent and added into reactor. Stirring is carried out for 10-15 min. Mass is cooled to temperature 5 C above cream solidification point. Properties: water resistance is 80-100 scores; dust accumulation is 1.1-1.4 mg/cm ; luster is 11-13 units; an aqueous extract pH is 6.2-6.7. EFFECT: improved quality of cream. 3 tblr
|
