N-alkyl aziridine block copolymers and the uses thereof

US6867246B2 · kind B2 · utility

Assignee

• 3M ESPE AG · DE

Inventors

• Reinhold Nowak · Adelshofen, DE
• Joachim W. Zech · Kaufering, DE
• Peter Bissinger · Dießen, DE
• Erich Wanek · Kaufering, DE
• Gunther Eckhardt · Frieding, DE
• Guenther Lechner · Herrsching am Ammersee, DE

Key dates

• Filing date: May 30, 2001
• Grant date: Mar 15, 2005
• Expiry date: May 30, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/12
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

N-alkyl aziridine block copolymers of the general structure (1), wherein R1 represents H, C1-C12 alkyl, C2-C12 alkenyl, C2-C12 alkinyl, C7-C15 aralkyl C7-C15 aralkyl, or C3-C12 cycloalkyl and these groups can be substituted with C1 or F partially, completely or in a mixed manner and/or may contain 0 to 5 heteroatoms selected from O, N, S; R2 represents a group selected from R1 and/or R4; R3 represents SiR13 or SiR12R4, wherein R4 represents a group of the general formula (2), wherein A represents an (n+1) radical saturated, unsaturated or aromatic, linear, branched or cyclic hydrocarbon group that may contain 0 to 5 heteroatoms selected from O, N, S and that comprises 1 to 18 carbon atoms; B is selected from O, S, NR1; D is selected from C(O)O, C(O)NR1, C(O), C(S)NR1, CH2; E represents a diradical saturated or unsaturated, linear, branched or cyclic hydrocarbon group that may contain 0 to 5 heteroatoms selected from O, N, S, and that comprises 0 to 18 carbon atoms; Q represents and α, ω-radical polyether chain of the general formula (3): —[O—CgH2g]h—, wherein g is 2 to 20; h is 1 to 1000; a is 0 or 1; f is an integer from 2 to 1000; n is an integer from 1 to 10; and x, y, z each re…