Pretreatment of pigments to prepare liquids for enteric coating
Film coating fluids commonly contain different pigments. The objective of this work was a study of the distribution of these particles in the coating film. Different pretreatment forms (pigment suspension, pigment paste and untreated pigments) were applied. They were incorporated into a Eudragit® L...
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Published in | Pharmazie Vol. 63; no. 7; pp. 514 - 515 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Germany
Govi-Verlag
01.07.2008
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Subjects | |
Online Access | Get full text |
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Summary: | Film coating fluids commonly contain different pigments. The objective of this work was a study of the distribution of these particles in the coating film. Different pretreatment forms (pigment suspension, pigment paste and untreated pigments) were applied. They were incorporated into
a Eudragit® L 30 D-55 dispersion. The surface roughness and the mechanical properties of the free films indicated, that the most homogeneous film was obtained with the pigment paste. The homogeneity of the film was investigated by mechanical testing. The protective effect of the coating
did not vary with the application of pigments in different forms, but the appearance of the coated tablets underwent a considerable change. |
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Bibliography: | 0031-7144(20080701)63:7L.514;1- ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0031-7144 |
DOI: | 10.1691/ph.2008.8074 |