ES368930A1 - A procedure to produce mixtures of appropriate polyamides to obtain simultaneously di-isocyanate of 4,4'difenylmethane and poly-isocyanate composition. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure to produce mixtures of appropriate polyamides to obtain simultaneously di-isocyanate of 4,4'difenylmethane and poly-isocyanate composition. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES368930A1
ES368930A1 ES368930A ES368930A ES368930A1 ES 368930 A1 ES368930 A1 ES 368930A1 ES 368930 A ES368930 A ES 368930A ES 368930 A ES368930 A ES 368930A ES 368930 A1 ES368930 A1 ES 368930A1
Authority
ES
Spain
Prior art keywords
isocyanate
difenylmethane
translation
poly
procedure
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
ES368930A
Other languages
Spanish (es)
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of ES368930A1 publication Critical patent/ES368930A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • 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
    • C08G12/06—Amines
    • C08G12/08—Amines aromatic
    • 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
    • C08G12/40—Chemically modified polycondensates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

A polyamine mixture suitable for producing simultaneously 4,41-diphenylmethane diisocyanate and a polyisocyanate composition preferably containing 50-60% by weight of 4,41-diphenylmethane diisocyanate and the remainder polyisocyanates comprises reacting aniline with formaldehyde in a ratio of 1.5 to 2À3 moles of aniline per mole of formaldehyde in the presence of a mineral acid of 0À7 to 0À95 times the stoichiometric amount of aniline at an initial temperature of 15 to 50 C. for at least one hour and at a final temperature of more than 50 C. to complete the reaction. Subsequently the polyamine mixture may be phosgenated and 4,41-diphenylmethane diisocyanate and the polyisocyanate composition separated from the resulting polyisocyanate mixture or the separation and phosgenation procedures may be reversed.
ES368930A 1969-02-01 1969-06-28 A procedure to produce mixtures of appropriate polyamides to obtain simultaneously di-isocyanate of 4,4'difenylmethane and poly-isocyanate composition. (Machine-translation by Google Translate, not legally binding) Expired ES368930A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP745569A JPS5016355B1 (en) 1969-02-01 1969-02-01

Publications (1)

Publication Number Publication Date
ES368930A1 true ES368930A1 (en) 1971-05-01

Family

ID=11666283

Family Applications (1)

Application Number Title Priority Date Filing Date
ES368930A Expired ES368930A1 (en) 1969-02-01 1969-06-28 A procedure to produce mixtures of appropriate polyamides to obtain simultaneously di-isocyanate of 4,4'difenylmethane and poly-isocyanate composition. (Machine-translation by Google Translate, not legally binding)

Country Status (8)

Country Link
JP (1) JPS5016355B1 (en)
BE (1) BE735258A (en)
CH (1) CH541544A (en)
DE (1) DE1932526B2 (en)
ES (1) ES368930A1 (en)
FR (1) FR2030234A1 (en)
GB (1) GB1257853A (en)
NL (1) NL144590B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238379C3 (en) * 1972-08-04 1984-08-30 Bayer Ag, 5090 Leverkusen Process for the production of polyamines
DE2356828C2 (en) * 1973-11-14 1982-10-21 Bayer Ag, 5090 Leverkusen Process for the production of polyamines and their use as starting material for the production of polyisocyanates

Also Published As

Publication number Publication date
FR2030234A1 (en) 1970-11-13
JPS5016355B1 (en) 1975-06-12
NL6909874A (en) 1970-08-04
DE1932526B2 (en) 1973-01-18
GB1257853A (en) 1971-12-22
DE1932526A1 (en) 1970-09-10
NL144590B (en) 1975-01-15
CH541544A (en) 1973-09-15
BE735258A (en) 1969-12-01

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