Process for producing polyol-containing dispersions and...

Details Process for producing polyol-containing dispersions and... Process for producing polyol-containing dispersions and...

C - Chemistry, Metallurgy

08

J

C08J 11/24 (2006.01) C08G 18/64 (2006.01) C08L 75/00 (2006.01)

Patent

CA 2087718

ABSTRACT This invention relates to a process for preparing polyol- containing dispersions by reacting polyurethane-urea waste with at least one linear and/or branched-chain diol and/or polyol with a mol mass of 50-1000 g/mol in a ratio by weight of polymer waste to diol and/or polyol of greater than 3:1 at a temperature of 150-250°C, optionally in the presence of acid or basic catalysts, and by dispersing the reaction product in at least one primary polyol with a mol mass up to about 6000 g/mol. The resultant dispersions are suitable for the preparation of polyurethanes or polyurethane-ureas.

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