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1. (WO1998050345) PREPARATION OF HYDROXY URETHANES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/050345 International Application No.: PCT/US1998/009202
Publication Date: 12.11.1998 International Filing Date: 06.05.1998
Chapter 2 Demand Filed: 07.12.1998
IPC:
C07C 269/04 (2006.01) ,C08F 8/32 (2006.01)
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
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
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US
Inventors:
ANDERSON, Albert, Gordon; US
Agent:
SIEGELL, Barbara, C.; E.I. du Pont de Nemours and Company Legal Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
08/848,45508.05.1997US
Title (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.
Designated States: AU, BR, CA, IL, JP, KR
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
KR1020010012318IL132452EP0983231JP2001524129 CA2288329AU1998075649