| 摘要 |
Method of producing envelope pigments with the mineral nucleus, particularly silica or aluminosilicate, encompassing various sequences of all or some of the operations of milling, mixing, precipitation, rinsing, drying or roasting, with carrier being coated by active substance; is characterised in that the carrier is additionally subject to the pneumatic treatment under conditions where its molecules are accelerated to at least 80 m/sec.
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