GB319822A - Process for the manufacture of condensation products of cyanamide and formaldehyde - Google Patents

Process for the manufacture of condensation products of cyanamide and formaldehyde

Info

Publication number
GB319822A
GB319822A GB18811/28A GB1881128A GB319822A GB 319822 A GB319822 A GB 319822A GB 18811/28 A GB18811/28 A GB 18811/28A GB 1881128 A GB1881128 A GB 1881128A GB 319822 A GB319822 A GB 319822A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
cyanamide
calcium
precipitated
condensation products
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
GB18811/28A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB18811/28A priority Critical patent/GB319822A/en
Publication of GB319822A publication Critical patent/GB319822A/en
Expired legal-status Critical Current

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

Abstract

319,822. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). June 28, 1928. Cyanamide-formaldehyde condensation products.-Cyanamide is condensed with formaldehyde in alkaline, neutral, or acid conditions. In examples (1) an aqueous extract of calcium cyanamide is neutralized with hydrochloric acid and formaldehyde is added, the condensation product being precipitated; if desired the calcium in the solution may be previously removed for instance by precipitation with sulphuric acid, otherwise it is precipitated with the product; a small alkalinity is produced by the calcium remaining, or mav be produced in other ways, for instance by adding alkalies, amines, pyridine, etc.; (2) an aqueous extract of calcium cyanamide is acidified with hydrochloric acid and formaldehyde is added, the mixture being heated for a long time at 60-100‹ C., when the condensation product is precipitated.
GB18811/28A 1928-06-28 1928-06-28 Process for the manufacture of condensation products of cyanamide and formaldehyde Expired GB319822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18811/28A GB319822A (en) 1928-06-28 1928-06-28 Process for the manufacture of condensation products of cyanamide and formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18811/28A GB319822A (en) 1928-06-28 1928-06-28 Process for the manufacture of condensation products of cyanamide and formaldehyde

Publications (1)

Publication Number Publication Date
GB319822A true GB319822A (en) 1929-09-30

Family

ID=10118803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18811/28A Expired GB319822A (en) 1928-06-28 1928-06-28 Process for the manufacture of condensation products of cyanamide and formaldehyde

Country Status (1)

Country Link
GB (1) GB319822A (en)

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