AQUEOUS TWO-COMPONENT POLYURETHANE-FORMING COMPOSITIONS AND A PROCESS FOR THEIR PREPARATION

The present invention is directed to a process for the preparation of an aqueous two-component polyurethane- forming composition by a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) also blending with water either before, during or after dispers...

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Bibliographic Details
Main Authors TIRPAK, ROBIN E, MARKUSCH, PETER H, ROSTHAUSER, JAMES W
Format Patent
LanguageEnglish
French
Published 22.04.2003
Edition5
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:The present invention is directed to a process for the preparation of an aqueous two-component polyurethane- forming composition by a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) also blending with water either before, during or after dispersing the polyisocyanate, a polyhydroxyl compound which i) has a molecular weight of 62 to 10,000, ii) contains at least two hydroxyl groups, iii) is water soluble or water dispersible, iv) does not contain urea or urethane groups and v) is selected from the group of polyesters, polylactones, polycarbonates, polyethers, polythioethers, polyacetals, polyether esters, polyester amides and polyamides, wherein the equivalent ratio of isocyanate groups to aqueous groups is 0.8:1 to 6:1. The present invention is also directed to the aqueous composition prepared by this process and to its use as a binder for fiberglass.
Bibliography:Application Number: CA19922072693