Verfahren zur Herstellung von 2,4,6-Triisocyanato-toluol
申请人:BASF Aktiengesellschaft
公开号:EP0072915A2
公开(公告)日:1983-03-02
Die Erfindung betrifft ein Verfahren zur Herstellung von 2,4,6-Triisocyanato-toluol durch Umsetzung von 2,4,6-Triamino-toluolhydrochlorid mit Phosgen in Gegenwart von o-Dichlorbenzol oder Mono- undoder Dicarbonsäureestern mit Siedepunkten von 165° bis 250°C als Lösungsmittel.
Polyurethane-polyurea particles and process for production thereof
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP0400999A2
公开(公告)日:1990-12-05
Polyurethane polyurea particles are obtainable by an interfacial polymerization reaction between a hydrophobic phase which is capable of forming a three-dimensional crosslinked structure by reaction and is a mixture comprising a polyisocyanate compound and a polyhydroxy compound with the isocyanate groups being stoichiometrically in excess, and a polyamine in an amount not more than one equivalent of the stoichiometric excess of isocyanate groups in the hydrophobic phase, and by polyurethanization reaction inside the particles.