FR2457855A1 - Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour - Google Patents

Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour

Info

Publication number
FR2457855A1
FR2457855A1 FR7913637A FR7913637A FR2457855A1 FR 2457855 A1 FR2457855 A1 FR 2457855A1 FR 7913637 A FR7913637 A FR 7913637A FR 7913637 A FR7913637 A FR 7913637A FR 2457855 A1 FR2457855 A1 FR 2457855A1
Authority
FR
France
Prior art keywords
isocyanate
prepd
biuret
mfr
hexa
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.)
Granted
Application number
FR7913637A
Other languages
French (fr)
Other versions
FR2457855B1 (en
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.)
BRUSILOVSKY MIKHAIL
Original Assignee
BRUSILOVSKY MIKHAIL
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 BRUSILOVSKY MIKHAIL filed Critical BRUSILOVSKY MIKHAIL
Priority to FR7913637A priority Critical patent/FR2457855A1/en
Priority to NL7904323A priority patent/NL173166C/en
Publication of FR2457855A1 publication Critical patent/FR2457855A1/en
Application granted granted Critical
Publication of FR2457855B1 publication Critical patent/FR2457855B1/fr
Granted 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/7806—Nitrogen containing -N-C=0 groups
    • C08G18/7818—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups
    • C08G18/7831—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups containing biuret groups
    • 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
    • C07C273/1872—Preparation of compounds comprising a -N-C(O)-N-C(O)-N- moiety

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Paints Or Removers (AREA)

Abstract

Biuret-structure polyisocyanates are prepd. by reacting 1,6-hexamethylene-diisocyanate at 150-170 degrees C with water which is delivered into the reaction zone in the form of vapours in a mixt. (moisture content 0.1-2.0 Kg/Kg) with air or an inert gas at 110-130 degrees C. The polyisocyanates are useful for the mfr. of paints and varnishes, e.g. light and weather resistant polyurethanes. The polyisocyanates (molecular mass about 800) have a relatively low viscosity and high isocyanate gp. content (about 23.59%). No polyurea is formed, so that losses of the diisocyanate are reduced and no filtration step is required. The process is single-staged, technologically simple and continuous.
FR7913637A 1979-05-29 1979-05-29 Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour Granted FR2457855A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7913637A FR2457855A1 (en) 1979-05-29 1979-05-29 Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour
NL7904323A NL173166C (en) 1979-05-29 1979-06-01 METHOD FOR PREPARING POLYISOCYANATES WITH A BIURETRY STRUCTURE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913637A FR2457855A1 (en) 1979-05-29 1979-05-29 Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour
NL7904323A NL173166C (en) 1979-05-29 1979-06-01 METHOD FOR PREPARING POLYISOCYANATES WITH A BIURETRY STRUCTURE

Publications (2)

Publication Number Publication Date
FR2457855A1 true FR2457855A1 (en) 1980-12-26
FR2457855B1 FR2457855B1 (en) 1983-10-14

Family

ID=26221184

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7913637A Granted FR2457855A1 (en) 1979-05-29 1979-05-29 Biuret-structure poly:isocyanate(s) for paint mfr. - prepd. continuously from 1,6-hexa:methylene di:isocyanate and water vapour

Country Status (2)

Country Link
FR (1) FR2457855A1 (en)
NL (1) NL173166C (en)

Also Published As

Publication number Publication date
NL7904323A (en) 1980-12-03
FR2457855B1 (en) 1983-10-14
NL173166C (en) 1983-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse