Granulation of Organic Dyes for Castable Smoke Compositions.
Abstract
Processing of castable smoke compositions having an end-of-mix viscosity less than 5 kilopoises and a solids loading greater than 80% by weight is only possible when granulated dyes are used. Since the organic dyes used in these compositions are commercially available only as very fine powders, two methods of granulation have been developed. The first method, by fusion, crystallization and grinding, is useful for single component dyes, such as orange, where there is a single melting point. The second method, by compaction and grinding, has, on the other hand, given good results with all the dyes tried and can be used in a continuous process to economically produce granulated material of the desired size. Also discussed are the properties of the material and its advantages with respect to the manufacture of smoke compositions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1978
- Accession Number
- ADA062157
Entities
People
- Abhishek Roy
- G. Couture