Use of polysiloxane-polyoxyalkylene block copolymers in the preparation of rigid polyurethane foams
作者： Rolf-Dieter Langenhagen , Hans-Joachim Dr. Kollmeier , Helmut Schator , Christian Dr. Weitemeyer
DOI:
关键词:
摘要: A process of preparing rigid polyurethane foams is disclosed, wherein polysiloxane polyoxyalkylene block copolymers which have at least one aminofunctional group the general formula, ##STR1## linked to a silicon atom, are used in an amount 0.2 5% by weight, based on polyol or prepolymer having isocyanate groups, provide foams, otherwise contain closed cells, with partially open cells.
lens.org 参考文章(11)
K Kraft, M Dahm, M Roegler, Polyurethane foam resin stabilizers ,(1971)
Carl J. Litteral, David L. Mullins, Preparation of hydrolyzable polysiloxane-polyoxyalkylene block copolymers ,(1977)
Edward L Morehouse, Siloxane-oxyalkylene copolymer foam stabilizers ,(1966)
Feyyaz Omer Baskent, Michael Ray Sandner, Use of organosiloxane compositions as foam stabilizers in flexible polyester polyurethane foam ,(1981)
Rolf-Dieter Langenhagen, Hans-Joachim Dr. Kollmeier, Process for the production of rigid polyurethane foams ,(1984)
Rolf-Dieter Langenhagen, Helmut Lammerting, Hans-Joachim Kollmeier, Bernd-Juergen Klietsch, Process for the production of highly resilient, cold-curing polyurethane foams ,(1983)
James A. McClanahan, Raymond A. Dunleavy, Rigid and semiflexible polyurethane foams produced with phenol-aldehyde-amine resins ,(1979)
Hans Joachim Meiners, Johan Bernhard Koster, Hans Heinrich Moretto, Process for the production of cold hardening foams containing urethane groups by in-mold foaming ,(1975)
Morgan David Brereton, Vickers Edward Jervis, Improvements in the manufacture of foamed polyurethanes ,(1967)
Rossmy Gerd, PROCESS FOR PRODUCING POLYURETHANE FOAM ,(1970)