GB1550521A - Process for the preparation of polyisocyanates which contain biuret groups - Google Patents

Process for the preparation of polyisocyanates which contain biuret groups

Info

Publication number
GB1550521A
GB1550521A GB9418/77A GB941877A GB1550521A GB 1550521 A GB1550521 A GB 1550521A GB 9418/77 A GB9418/77 A GB 9418/77A GB 941877 A GB941877 A GB 941877A GB 1550521 A GB1550521 A GB 1550521A
Authority
GB
United Kingdom
Prior art keywords
polyisocyanates
biuret groups
preparation
groups
contain biuret
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
GB9418/77A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1550521A publication Critical patent/GB1550521A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C273/1809—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 with formation of the N-C(O)-N moiety
    • C07C273/1818—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 with formation of the N-C(O)-N moiety from -N=C=O and XNR'R"
    • C07C273/1827—X being H
    • 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
    • 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
    • C08G18/80—Masked polyisocyanates
    • C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
    • C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
    • C08G18/8038—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3225

Abstract

Polyisocyanates that contain biuret groups are prepared. They are obtained by reacting organic polyamines having two primary amino groups not attached to aliphatic and/or cycloaliphatic moieties with organic polyisocyanates that are free of biuret groups in a molar NH2/NCO ratio of from 1:5 to 1:100. The polyamines are reacted in the form of vapour directly with the polyisocyanates which have been heated to a temperature of from 100 DEG C to 250 DEG C. The resulting polyisocyanates with biuret groups can be used for preparing high-grade, weather-resistant, light-stable coatings.
GB9418/77A 1976-03-10 1977-03-07 Process for the preparation of polyisocyanates which contain biuret groups Expired GB1550521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2609995A DE2609995C3 (en) 1976-03-10 1976-03-10 Process for the preparation of polyisocyanates containing biuret groups

Publications (1)

Publication Number Publication Date
GB1550521A true GB1550521A (en) 1979-08-15

Family

ID=5972047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9418/77A Expired GB1550521A (en) 1976-03-10 1977-03-07 Process for the preparation of polyisocyanates which contain biuret groups

Country Status (13)

Country Link
JP (1) JPS52108927A (en)
AT (1) AT346832B (en)
AU (1) AU506589B2 (en)
BE (1) BE852265A (en)
BR (1) BR7701381A (en)
CA (1) CA1077956A (en)
CH (1) CH627739A5 (en)
DD (1) DD130041A5 (en)
DE (1) DE2609995C3 (en)
ES (1) ES456660A1 (en)
FR (1) FR2357589A1 (en)
GB (1) GB1550521A (en)
NL (1) NL7702438A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803103A1 (en) * 1978-01-25 1979-07-26 Bayer Ag PROCESS FOR THE PREPARATION OF ORGANIC POLYISOCYANATES CONTAINING BIURET AND / OR UREA GROUPS
DE3003543A1 (en) * 1980-01-31 1981-08-06 Bayer Ag, 5090 Leverkusen METHOD FOR THE PRODUCTION OF MODIFIED POLYISOCYNATES AND THEIR USE AS A BUILD-UP COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS
DE3143060A1 (en) * 1981-10-30 1983-05-11 Chemische Werke Hüls AG, 4370 Marl Powder coatings based on blocked isophorone diisocyanate adducts
IN172016B (en) * 1986-04-25 1993-03-13 Uop Inc
DE3700209A1 (en) * 1987-01-07 1988-07-21 Bayer Ag METHOD FOR PRODUCING POLYISOCYANATES WITH BIURET STRUCTURE
DE4439421A1 (en) * 1994-11-04 1996-05-09 Huels Chemische Werke Ag New polyamines containing urea groups and processes for their preparation
DE19633404A1 (en) * 1996-08-19 1998-02-26 Basf Ag Process for the production of polyisocyanates containing biuret groups from (cyclo) aliphatic diisocyanates
EP2681189A1 (en) 2011-03-03 2014-01-08 Basf Se Process for preparing polyisocyanates containing biuret groups
US8609887B2 (en) 2011-03-03 2013-12-17 Basf Se Process for preparing polyisocyanates comprising biuret groups

Also Published As

Publication number Publication date
FR2357589A1 (en) 1978-02-03
FR2357589B1 (en) 1983-10-07
BR7701381A (en) 1978-05-02
DE2609995A1 (en) 1977-09-22
DE2609995C3 (en) 1979-12-06
DD130041A5 (en) 1978-03-01
NL7702438A (en) 1977-09-13
DE2609995B2 (en) 1978-03-23
CH627739A5 (en) 1982-01-29
CA1077956A (en) 1980-05-20
AT346832B (en) 1978-11-27
JPS6229426B2 (en) 1987-06-25
AU506589B2 (en) 1980-01-10
AU2307777A (en) 1978-09-14
BE852265A (en) 1977-09-09
JPS52108927A (en) 1977-09-12
ES456660A1 (en) 1978-01-16
ATA153977A (en) 1978-04-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950307