標準號：BS EN ISO 8781-1-1991
中文標準名稱：顏料和稀釋劑.色散特性評定方法.第1部分:有色顏料著色度變化評定
英文標準名稱：Pigments and extenders. Methods of assessment of dispersion characteristics. Assessment from the charge in tinting strength of coloured pigments
標準類型：G54
發布日期：1991/4/30 12:00:00
實施日期：1991/4/30 12:00:00
中國標準分類號：G54
國際標準分類號：87.060.10
適用范圍：Relates to coloured pigments which have been dispersed by one of the methods described in ISO 8780. The method is of general use for comparing similar pigments, for example a test pigment against an agreed reference pigment. The principle consists in dispersing the pigment in stages under specified conditions in an agreed binder system. After each dispersion stage, a portion of the mill base is taken and mixed separately with a white pigment to form a reduced paste. The tinting strength of each reduced paste is determined as described in ISO 787-24. The percentage increase in tinting strength between two dispersion stages is calculated in order to assess the ease of dispersibility of the pigment.