Carbamate solutions

US6506811B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Peter W. K. Woo · Diepholz, DE
• Anke Schulze · Wetschen, DE
• Edmund Stadler · Hollfeld, DE
• Dieter Tintelnot · Diepholz, DE
• Udo Hadick · Lemförde, DE
• Ralf Hinrichs · Ehrenburg, DE
• Horst Hurkamp · Dinklage, DE
• Klaus Sobolewski · Diepholz, DE

Key dates

• Filing date: Sep 28, 2001
• Grant date: Jan 14, 2003
• Expiry date: Sep 28, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2410/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Carbamate solutions are obtainable by reacting at least one alkanolamine with carbon dioxide in, as solvent, at least one organic compound having a molecular weight of from 60 to 600 and containing at least one hydroxyl group, wherein the carbamate contains at least 0.51 mol of bound carbon dioxide per mole of alkanolamine and the alkanolamine has one of the following formulae:NH2—X—OH  (I)HO—X—Y—OH  (II)HO—X—NR9—(CR7R8)n5—Y—OH  (III)whereX: —[(CR1R2)n1—NR3]n2—[(CR4R5)n3—NR6]n4—(CR7R8)n5—Y: —[NR6—(CR4R5)n3]n4—[NR3—(CR1R2)n1]n2—andn1, n3, n5: identical or different integers selected from the group consisting of 1, 2, 3, 4,n2, n4: identical or different integers selected from the group consisting of 0, 1, 2, 3, 4, 5, 6, where for each of X and Y the sum of n2 and n4 is greater than or equal to 1,R1, R2, R4, R5, R7, R8: identical or different radicals selected from the group consisting of hydrogen, aliphatic, cycloaliphatic, araliphatic and aromatic radicals having from 1 to 20 carbon atoms,R3, R6, R9: identical or different …