GB463764A - Improvements in or relating to the manufacture of luminescent bodies - Google Patents
Improvements in or relating to the manufacture of luminescent bodiesInfo
- Publication number
- GB463764A GB463764A GB14994/36A GB1499436A GB463764A GB 463764 A GB463764 A GB 463764A GB 14994/36 A GB14994/36 A GB 14994/36A GB 1499436 A GB1499436 A GB 1499436A GB 463764 A GB463764 A GB 463764A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- formaldehyde
- urea
- luminescent substances
- relating
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In the preparation of luminous urea-formaldehyde bodies where, after the initial reaction of the urea and the formaldehyde, acidification is effected by adding an anhydride in admixture with an alcohol and boiling off the alcohol in vacuo at a moderate temperature, the luminescent substances are introduced in powdery form after the initial reaction but before or during the boiling, whereby they are distributed regularly in the mass. The mass may be centrifuged to distribute the luminescent substances on the surface of the body. If easily destructible luminescent substances are employed, the grains thereof may be coated with a semi - liquid formaldehyde - urea condensate before their introduction into the mass. Specification 420,317 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR463764X | 1935-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB463764A true GB463764A (en) | 1937-04-06 |
Family
ID=8901949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14994/36A Expired GB463764A (en) | 1935-05-27 | 1936-05-27 | Improvements in or relating to the manufacture of luminescent bodies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB463764A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120044B (en) * | 1955-10-26 | 1961-12-21 | Roehm & Haas Gmbh | Method of stabilizing fine metal powders |
US5794009A (en) * | 1996-05-09 | 1998-08-11 | Eagle Research Corp. | Multiple protocol management system |
-
1936
- 1936-05-27 GB GB14994/36A patent/GB463764A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120044B (en) * | 1955-10-26 | 1961-12-21 | Roehm & Haas Gmbh | Method of stabilizing fine metal powders |
US5794009A (en) * | 1996-05-09 | 1998-08-11 | Eagle Research Corp. | Multiple protocol management system |
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