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GB523448A - - Google Patents

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Publication number
GB523448A
GB523448A GB523448DA GB523448A GB 523448 A GB523448 A GB 523448A GB 523448D A GB523448D A GB 523448DA GB 523448 A GB523448 A GB 523448A
Authority
GB
United Kingdom
Prior art keywords
melanine
dec
ammetine
basle
melan
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
Application number
Publication date
Publication of GB523448A publication Critical patent/GB523448A/en
Expired legal-status Critical Current

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Cosmetics (AREA)

Abstract

523,448. Melanine. SOC. OF CHEMICAL INDUSTRY IN BASLE. Dec. 29, 1938, No. 37727. Convention date, Dec. 31, 1937. [Class 2 (iii)] Melanine is manufactured by heating melan in a closed vessel at a temperature above 150‹ C. with anhydrous ammonia in quantity amounting to at least twice that theoretically required, thus depressing the formation of undesired ammetine.
GB523448D Expired GB523448A (en)

Publications (1)

Publication Number Publication Date
GB523448A true GB523448A (en) 1900-01-01

Family

ID=1748036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB523448D Expired GB523448A (en)

Country Status (1)

Country Link
GB (1) GB523448A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475709A (en) * 1949-07-12 Treatment of melam
US2537937A (en) * 1951-01-09 Method for preparing substituted
US2559617A (en) * 1951-07-10 Manufacture of melamine
US2566230A (en) * 1951-08-28 Preparation of melamine
DE1231250B (en) * 1961-02-07 1966-12-29 Nippon Carbide Kogyo Kk Process for the production of melamine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475709A (en) * 1949-07-12 Treatment of melam
US2537937A (en) * 1951-01-09 Method for preparing substituted
US2559617A (en) * 1951-07-10 Manufacture of melamine
US2566230A (en) * 1951-08-28 Preparation of melamine
DE1231250B (en) * 1961-02-07 1966-12-29 Nippon Carbide Kogyo Kk Process for the production of melamine

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