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1. (EP0983231) PREPARATION OF HYDROXY URETHANES

Office : European Patent Office
Application Number: 98923338 Application Date: 06.05.1998
Publication Number: 0983231 Publication Date: 08.03.2000
Publication Kind : B1
Designated States: BE, CH, DE, DK, ES, FR, GB, IT, LI, NL, SE
Prior PCT appl.: Application Number:US1998009202 ; Publication Number: Click to see the data
IPC:
C07C 269/04
C07C 271/12
C08F 8/32
C08F 20/26
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
269
Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups
04
from amines with formation of carbamate groups
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
271
Derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups
06
Esters of carbamic acids
08
having oxygen atoms of carbamate groups bound to acyclic carbon atoms
10
with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
12
to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
8
Chemical modification by after-treatment
30
Introducing nitrogen atoms or nitrogen-containing groups
32
by reaction with amines
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
20
Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02
Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10
Esters
26
Esters containing oxygen in addition to the carboxy oxygen
CPC:
C07C 269/04
Applicants: DU PONT
Inventors: ANDERSON ALBERT GORDON
Priority Data: 84845597 08.05.1997 US
9809202 06.05.1998 US
Title: (DE) HERSTELLUNG VON HYDROXYURETHANEN
(EN) PREPARATION OF HYDROXY URETHANES
(FR) PREPARATION D'HYDROXY-URETHANES
Abstract:
(EN) The reactions of cyclic carbonates, especially 1,3-dioxolan-2-ones, with amines, especially primary amines, are catalyzed by the presence of a base whose conjugate acid has a pKa of about 11 or more. The products are hydroxy urethanes, and the process can be used to form cross-linked polymers which contain urethane groups. Such cross-linked polymers are useful in coatings.
(FR) Selon l'invention, les réactions de carbonates cycliques, en particulier des 1,3-dioxolan-2-ones, avec des amines, en particulier des amines primaires, sont catalysées par la présence d'une base dont l'acide conjugué présente un pKa d'au moins environ 11. Les produits obtenus sont des hydroxy-uréthanes, et le procédé peut être utilisé pour former des polymères réticulés qui contiennent des groupes uréthane. De tels polymères réticulés peuvent être utilisés dans des revêtements.
Also published as:
KR1020010012318IL132452JP2001524129 CA2288329AU1998075649WO/1998/050345