Process for the production of aqueous polyurethane dispersions
作者： Gerhard Moormann , Harald Petersen , Wolfgang Henning
DOI:
关键词:
摘要: The present invention relates to a process for the continuous production of aqueous polyurethane dispersions, i.e. dispersions or suspensions both pure polyurethanes and ureas, by mixing product, which has been obtained reaction polyisocyanates with compounds having molecular weight 400 about 10,000 containing at least two isocyanate-reactive groups, water, characterized in that polyisocyanate product water is carried out co-current reactor, one components be mixed mixture being compressed an initilal pressure from 20 500 bar expanded through coaxially arranged nozzle into short residence time tube where it other component component.
lens.org参考文章(13)
Rudner Bernard, Polymeric hydrazinium salts ,(1959)
Artur Reischl, Microporous sheets and a process for making them ,(1974)
Dieter Dieterich, Gunter Mertens, Wolfgang Wenzel, Process for the preparation of stable aqueous dispersions of oligourethanes or polyurethanes and their use as coating compounds for flexible or rigid substrates ,(1980)
Jurgen Grammel, Helmut Reiff, Dieter Dieterich, Wolfgang Wenzel, Aqueous polyurethane dispersions from solvent-free prepolymers using sulfonate diols ,(1977)
Dieterich Dieter, Bayer Otto, Peter Julius, Aqueous dispersions of quaternized polyurethanes ,(1963)
Peter Kelmchuk, Stabilized polyamide compositions ,(1971)
Helmut Reiff, Dieter Dieterich, Light fast quaternized or amine salt polyurethanes from 2-alkyl - 2 - dialkylaminomethyl-1,3-propane diols ,(1971)
D Dieterich, Polyurethane polyelectrolytes and process for preparing same ,(1972)
Wolfgang Dr Henning, Peter Dipl Ing Fuhrmann, Walter Dr Meckel, Verfahren zur kontinuierlichen herstellung von waessrigen polyurethandispersionen und ihre verwendung als beschichtungsmittel oder als klebstoff ,(1986)
Dieter Dr Dieterich, Artur Dr Reischl, Harro Dr Witt, Microporous polyurethane coatings - prepd by coagulating polyurethane contg anionic and or cationic polyurethanes ,(1974)