Permanently non-dusting pigment and dye preparations, method for

Details Permanently non-dusting pigment and dye preparations, method for Permanently non-dusting pigment and dye preparations, method for

1986-06-12

1987-10-27

Noland, Tom

Measuring and testing

Simulated environment

73150R, 73866, 8400, G01N 500, G01N 1900, G01N 3300, G01N 3322

Patent

active

047021160

ABSTRACT:
The dust producing properties of a pigment or dye are measured under conditions which close approximate those during handling. A vessel with baffles having pigment or dye therein is rotated for a specified time while air is drawn through the rotating vessel by a specified amount of vacuum applied downstream of the vessel. The baffles disturb the pigment or dye in the vessel, creating dust particles which are entrained in an airstream created by the vacuum. Larger particles trapped in this vacuum are removed by a separator, while the dust particles are trapped in the airstream are trapped by a filter. The dusting properties of the pigment or dye in the vessel may then be determined by weighing the filter.

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Chem. Abstrct, vol. 96, No. 22, (1982), 182693r, "Nondusting and rapidly wettable vat dyes with medium and high dispersibility". (p. 84)

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