Patent ID: 7723545
Filing Date: 2010-05-25
Classification: B01J

Abstract:
1. Method for the production of free-flowing carbodiimide compounds, comprising the steps of: preparation of a particulate solid carbodiimide compound; storage of a mass of the particulate carbodiimide compound at a surface pressure of at least 30 g/cm crushing of the baked-together mass of the carbodiimide compound into a crushed particulate carbodiimide compound; sieving of the crushed particulate carbodiimide compound, whereby particles of a size in excess of 4.0 mm and particles of a size of less than 0.1 mm are separated from the crushed particulate carbodiimide compound such that a fraction containing particles of a free-flowing carbodiimide compound with long-term stability is obtained.