Patent Title: POLYAMIDE DISPERSION IN POLYOL AND PREPARATION THEREOF

 Number/Link: WO2017/216209

Applicant/Assignee:  BASF

Publication date: 21 December 2017

“Gist”: Polyamide particles from polyether diamine and adipic acid are dispersed in polyol

Why it is interesting: Conventional polymer polyols contain either SAN-, polyurethane- or polyurea particles (see e.g. here).  According to this invention, polymer polyol dispersions can also be prepared by reacting a diamine, containing at least 50 wt% of a linear polyether having two terminal primary amine groups with a dicarboxylic acid (e.g. adipic acid) in a polyether polyol.  The reaction results in a dispersion of polyamide particles in the polyether polyol, stabilized by the polyether diamine. The polymer polyols are useful for flexible foam production and are said to show an improved hydrolysis resistance.

Adipic acid