FR1214996A - Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde - Google Patents

Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde

Info

Publication number
FR1214996A
FR1214996A FR777686A FR777686A FR1214996A FR 1214996 A FR1214996 A FR 1214996A FR 777686 A FR777686 A FR 777686A FR 777686 A FR777686 A FR 777686A FR 1214996 A FR1214996 A FR 1214996A
Authority
FR
France
Prior art keywords
improvements relating
formaldehyde solutions
concentrated urea
urea
concentrated
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
FR777686A
Other languages
English (en)
Inventor
Guido Greco
Luciano Luciani
Umberto Soldano
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Application granted granted Critical
Publication of FR1214996A publication Critical patent/FR1214996A/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
FR777686A 1957-10-30 1958-10-28 Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde Expired FR1214996A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1214996X 1957-10-30

Publications (1)

Publication Number Publication Date
FR1214996A true FR1214996A (fr) 1960-04-13

Family

ID=11433509

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777686A Expired FR1214996A (fr) 1957-10-30 1958-10-28 Perfectionnements relatifs aux solutions concentrées urée-formaldéhyde

Country Status (1)

Country Link
FR (1) FR1214996A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189538B (de) * 1962-06-08 1965-03-25 Stamicarbon Verfahren zur Herstellung einer konzentrierten Formaldehydloesung durch mehrstufige Absorption
DE1189539B (de) * 1962-07-17 1965-03-25 Stamicarbon Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Melaminharze geeigneten konzentrierten Formaldehydloesung
DE1192636B (de) * 1962-09-25 1965-05-13 Stamicarbon Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Phenolharze geeigneten konzentrierten Formaldehydloesung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189538B (de) * 1962-06-08 1965-03-25 Stamicarbon Verfahren zur Herstellung einer konzentrierten Formaldehydloesung durch mehrstufige Absorption
DE1189539B (de) * 1962-07-17 1965-03-25 Stamicarbon Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Melaminharze geeigneten konzentrierten Formaldehydloesung
DE1192636B (de) * 1962-09-25 1965-05-13 Stamicarbon Verfahren zur Herstellung einer als Ausgangsstoff fuer Formaldehyd-Phenolharze geeigneten konzentrierten Formaldehydloesung

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