Production of elastic, compact or cellular moldings based on elastomers containing N-benzylurea groups in bound form, elastomers of this type, and N-benzylpolyoxyalkylene-polyamines which are suitable for this purpose

US5122547A · kind A · utility

Assignee

• BASF SE

Inventors

• Johannes Becker · Pfaffenhofen an der Ilm, DE
• Guenther Matzke · Heidelberg, DE
• Hans U. Schmidt · Griesheim, DE
• Willibald Schoenleben

Key dates

• Filing date: Dec 17, 1990
• Grant date: Jun 16, 1992
• Expiry date: Dec 17, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2120/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-benzylurea groups in bound form, by reacting PA0 a) one or more organic and/or modified organic polyisocyanates with PA0 b) N-benzylpolyoxyalkylene-polyamines or mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups and PA0 c) one or more alkyl-substituted aromatic polyamines having a molecular weight of up to 500, in the presence or absence of PA0 d) catalysts and, if desired, PA0 e) blowing agents, PA0 f) auxiliaries and/or PA0 g) additives, and to the N-benzylpolyoxyalkylene-polyamines and mixtures of N-benzylpolyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing from 2 to 4 primary amino groups which can be used for this purpose, and to the elastomers prepared.