摘要:
A process for the production of expanded polyurea elastomers which comprises reacting:a) an aliphatic polyetheramine having primary amino functions and essentially no free hydroxyl groups;b) carbon dioxide in the form of carbamate, obtained by reacting carbon dioxide with a portion of the aliphatic polyetheramines;c) a polyisocyanate;d) water; ande) a catalyst having a tertiary amino group;in the presence off) an inert, halogen-free blowing agent.
摘要:
The invention relates to a method for producing oligourea compounds by chain building and depolymerization, and to oligourea dispersions, as well as to their use as fungicides, biocides and/or herbicides.
摘要:
The invention in question is concerned with a method for the production of triethylene diamine using ethylene diamine as an educt and zeolite catalysts of the Pentasil type.