GB500686A - A process for the preparation of zinc oxide powder - Google Patents
A process for the preparation of zinc oxide powderInfo
- Publication number
- GB500686A GB500686A GB12624/38A GB1262438A GB500686A GB 500686 A GB500686 A GB 500686A GB 12624/38 A GB12624/38 A GB 12624/38A GB 1262438 A GB1262438 A GB 1262438A GB 500686 A GB500686 A GB 500686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc oxide
- powder
- preparation
- temperatures
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/849—Preparations for artificial teeth, for filling teeth or for capping teeth comprising inorganic cements
- A61K6/864—Phosphate cements
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Preparations (AREA)
Abstract
500,686. Phosphate cements. DEUTSCHE GOLD-UND SILBER-SCHE1DEANSTALT VORM. ROESSLER, LOEBICH, O., and HINDERER, O. April 27, 1938, No. 12624. [Class 70] [Also in Group III] In the preparation of a zinc oxide powder for use in the production of phosphate cements for dental purposes, the initial material consisting of zinc oxide with or without subordinate quantities of magnesium oxide, bismuth oxide, or aluminium silicates is ground extremely finely, and the resulting powder then subjected to heat treatment at temperatures which do not cause sintering to such a degree that the produc has to be reground. Temperatures of 700-800 G. are preferred, but any temperature from 400 to 1000‹ C. may be used. The heat treatment removes the discoloration developed by grinding and avoids too rapid setting when the powder is triturated with phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12624/38A GB500686A (en) | 1938-04-27 | 1938-04-27 | A process for the preparation of zinc oxide powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12624/38A GB500686A (en) | 1938-04-27 | 1938-04-27 | A process for the preparation of zinc oxide powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB500686A true GB500686A (en) | 1939-02-14 |
Family
ID=10008115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12624/38A Expired GB500686A (en) | 1938-04-27 | 1938-04-27 | A process for the preparation of zinc oxide powder |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB500686A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2603554A (en) * | 1948-06-01 | 1952-07-15 | American Zinc Lead & Smelting | Production of zinc oxide |
-
1938
- 1938-04-27 GB GB12624/38A patent/GB500686A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2603554A (en) * | 1948-06-01 | 1952-07-15 | American Zinc Lead & Smelting | Production of zinc oxide |
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