GB625305A - Improvements in or relating to the production of melamine - Google Patents

Improvements in or relating to the production of melamine

Info

Publication number
GB625305A
GB625305A GB564947A GB564947A GB625305A GB 625305 A GB625305 A GB 625305A GB 564947 A GB564947 A GB 564947A GB 564947 A GB564947 A GB 564947A GB 625305 A GB625305 A GB 625305A
Authority
GB
United Kingdom
Prior art keywords
under
melamine
ammonia
pressure
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
Application number
GB564947A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB564947A priority Critical patent/GB625305A/en
Publication of GB625305A publication Critical patent/GB625305A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Melamine is prepared by heating dicyandiamide in the presence of ammonia as a gaseous suppressant under a pressure lying within the optimum range for ammonia under the conditions of reaction. In an example, dicyandiamide is heated for three hours at 190 DEG C. under a pressure between 30-45 atmospheres, or at 175 DEG C. under a pressure between 25-40 atmospheres. The Provisional Specification describes also the use as suppressants of gases other than ammonia.
GB564947A 1947-02-27 1947-02-27 Improvements in or relating to the production of melamine Expired GB625305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB564947A GB625305A (en) 1947-02-27 1947-02-27 Improvements in or relating to the production of melamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB564947A GB625305A (en) 1947-02-27 1947-02-27 Improvements in or relating to the production of melamine

Publications (1)

Publication Number Publication Date
GB625305A true GB625305A (en) 1949-06-24

Family

ID=9800029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB564947A Expired GB625305A (en) 1947-02-27 1947-02-27 Improvements in or relating to the production of melamine

Country Status (1)

Country Link
GB (1) GB625305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706729A (en) * 1955-04-19 Method for preparing melamine from

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706729A (en) * 1955-04-19 Method for preparing melamine from

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