Carbodiimides and/or oligomeric polycarbodiimides based on 1,3-bis(1-methyl-1-isocyanatoethyl)benzene, their preparation, and their use as hydrolysis stabilizers

US5504241A · kind A · utility

Assignee

• BASF SE

Inventors

• Siegmund Pohl · Ludwigshafen, DE
• Friedhelm Lehrich · Bohmte, DE
• Manfred Genz · Ostercappeln, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Helmut Tesch · Bad Dürkheim, DE
• Roland Minges · Havelsee, DE
• Joachim Streu · Dachau, DE

Key dates

• Filing date: Mar 7, 1995
• Grant date: Apr 2, 1996
• Expiry date: Mar 7, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There is now provided a carbodiimide or polycarbodiimide of the formula: ##STR1## where the R radicals are identical or different and are selected from the group consisting of --NHCONHR.sup.1 --, --NHCONR.sup.1 R.sup.2 --, and --NHCOOR.sup.3 --, where R.sup.1 and R.sup.2 may be identical or different and are alkyl, cycloalkyl, or aralkyl, and R.sup.3 is identical to R.sup.1 or is alkoxypolyoxyalkylene, and n is an integer from 0 to 10. There is also provided an ester containing plastic which contains this carbodiimide as an anti-hydrolysis agent. The plastics may be a polyurethane cellular or non-cellular elastomer or thermoplastic.