GB284272A - Improvements in the manufacture and production of methylol ureas - Google Patents

Improvements in the manufacture and production of methylol ureas

Info

Publication number
GB284272A
GB284272A GB2601/28A GB260128A GB284272A GB 284272 A GB284272 A GB 284272A GB 2601/28 A GB2601/28 A GB 2601/28A GB 260128 A GB260128 A GB 260128A GB 284272 A GB284272 A GB 284272A
Authority
GB
United Kingdom
Prior art keywords
urea
manufacture
production
methylol ureas
solution
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
GB2601/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB284272A publication Critical patent/GB284272A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C335/04—Derivatives of thiourea
    • C07C335/06—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms
    • C07C335/08—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms of a saturated carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1854—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas by reactions not involving the formation of the N-C(O)-N- moiety
    • C07C273/1863—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas by reactions not involving the formation of the N-C(O)-N- moiety from urea

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

284,272. Walter, G. Nov. 28, 1925, [Convention date]. Divided on 262,148. Samples furnished. Methylol compounds of urea, thiourea, and their derivatives are obtained by reacting on urea &c. with formaldehyde or a polymer thereof in an organic solvent at ordinary or slightly elevated temperature and in the presence of a base. In an example, urea is added to a cold solution of paraformaldehyde in alcohol containing sodium hydroxide, whereupon dimethylol urea separates from the solution and is filtered off.
GB2601/28A 1925-11-28 1926-11-29 Improvements in the manufacture and production of methylol ureas Expired GB284272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT284272X 1925-11-28

Publications (1)

Publication Number Publication Date
GB284272A true GB284272A (en) 1928-05-29

Family

ID=3670805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2601/28A Expired GB284272A (en) 1925-11-28 1926-11-29 Improvements in the manufacture and production of methylol ureas

Country Status (1)

Country Link
GB (1) GB284272A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103242201A (en) * 2013-04-26 2013-08-14 中科院广州化学有限公司 Preparation method of urea formaldehyde intermediate dimethylol urea

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103242201A (en) * 2013-04-26 2013-08-14 中科院广州化学有限公司 Preparation method of urea formaldehyde intermediate dimethylol urea
CN103242201B (en) * 2013-04-26 2015-06-10 中科院广州化学有限公司 Preparation method of urea formaldehyde intermediate dimethylol urea

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