Urethane oxazolidines

US4002601A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Hajek · Leverkusen, DE
• Kuno Wagner · Leverkusen, DE

Key dates

• Filing date: Sep 18, 1975
• Grant date: Jan 11, 1977
• Expiry date: Sep 18, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/8064
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to compounds corresponding to the following general formula: ##STR1## wherein M REPRESENTS AN INTEGER OF FROM 1 TO 6; PA1 N represents an integer of from 0 to 4; PA1 R.sub.1 represents an aliphatic hydrocarbon group containing from 2 to 6 carbon atoms; PA1 R.sub.2 and R.sub.3 which may be the same or different, each represents hydrogen, an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, a cycloaliphatic hydrocarbon group containing from 5 to 7 carbon atoms, or an aromatic hydrocarbon group containing from 6 to 10 carbon atoms, or when taken together with the ring carbon atom they may form a 5- or 6-membered cycloaliphatic hydrocarbon ring; PA1 R.sub.4 represents an aliphatic hydrocarbon group containing from 2 to 6 carbon atoms; and PA1 R.sub.5 represents a residue of the type which may be obtained by removing the isocyanate groups from an organic (n + m)-valent polyisocyanate. The invention also relates to a process for preparing urethanes which contain oxazolidine groups and optionally isocyanate groups, characterized in that N-hydroxyalkyl-oxazolidines are reacted with organic polyisocyanates at an OH/NCO ratio of from 1:1 to 1:6.