IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0488710
(1995-06-08)
|
|
발명자
/ 주소 |
|
| 출원인 / 주소 |
- Pharmacia & Upjohn Company
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
67 인용 특허 :
0 |
초록
The solid can be a pharmaceutical, agricultural chemical, commercial chemical, fine chemical, food item, photographic chemical, dye, explosive, paint, polymer or cosmetic.
대표청구항
▼
[ I claim:] [1.] A process for producing a non-sterile freely divided solid of less than or equal to 30 microns selected from the group consisting of a pharmaceutical, agricultural chemical, commercial chemical, free chemical, food item, photographic chemical, dye, explosive, polymer or cosmetic whi
[ I claim:] [1.] A process for producing a non-sterile freely divided solid of less than or equal to 30 microns selected from the group consisting of a pharmaceutical, agricultural chemical, commercial chemical, free chemical, food item, photographic chemical, dye, explosive, polymer or cosmetic which comprises: (1) dissolving the solid to be finely divided in a liquid carrier solvent to form an injection solution and(2) adding the injection solution of step (1) to a volume of anti-solvent sufficient to precipitate or crystallize the solid, where the anti-solvent is selected from the group consisting of carbon dioxide, ethane, ethylene, nitrous oxide, fluoroform (CHF.sub.3), dimethyl ether, propane, butane, isobutanes, propylene, chlorotrifluormethane (CClF.sub.3), sulfur hexafluoride (SF.sub.6), bromotrifluoromethane (CBrF.sub.3), chlorodifluoromethane (CHClF.sub.2), hexafluoroethane, carbon tetrafluoride and mixtures thereof where the finely divided solid is of substantially the same purity as was the pharmaceutical, agricultural chemical, commercial chemical, fine chemical, food item, photographic chemical, dye, explosive, polymer or cosmetic starting material.
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