发明名称 |
Herstellung eines fein verteilten, pulverförmigen Carotinoidpräparats |
摘要 |
The present invention relates to a continous process for the preparation of a pulverous carotenoid, retinoid or natural colourant preparation, wherein the active ingredient is finely divided, which process comprises the steps of a) forming a suspension of the active ingredient in a water-immiscible organic solvent optionally containing an antioxidant and/or an oil, b) feeding the suspension of step a) to a heat exchanger and heating said suspension to 100-250 DEG C, whereby the residence time in the heat exchanger is less than 5 see, c) rapidly mixing the solution of step b) at a temperature in the range of 20-100 DEG C with an aqueous solution of a swellable colloid optionally containing a stabilizer, d) removing the organic solvent and e) converting the dispersion of step d) into a pulverous preparation. |
申请公布号 |
DE69929641(D1) |
申请公布日期 |
2006.04.13 |
申请号 |
DE1999629641 |
申请日期 |
1999.02.19 |
申请人 |
DSM IP ASSETS B.V., TE HEERLEN |
发明人 |
STEIN, HERMANN;VIARDOT, KLAUS;YANG, BIN |
分类号 |
A23L1/275;C07C403/24;A23L1/27;C09B61/00;C09B67/04 |
主分类号 |
A23L1/275 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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