Patent Title: POLYOLS FORMED FROM SELF-METATHESIZED NATURAL OILS AND THEIR USE IN MAKING POLYURETHANE FOAMS

 Number/Link: US2017/0291983

Applicant/Assignee:  Trent Univ.

Publication date: 12 october 2017

“Gist”: NOPs from self-metathesized soy oils

Why it is interesting: The use of metathesis chemistry to modify natural oils before converting them to polyols has been discussed before in this blog:  see e.g. US2015/0337073, to the same applicant, which relates to cross-metathesis of natural oils using (e.g.) 1-butene. The current case is about self-metathesis of unsaturated natural oils, resulting in ‘metathesis oligomers’ which are then (partially) epoxidated and hydroxylated to prepare the polyols. In the examples soybean oil is turned into polyols with OH values between about 100 and 250, which are used to make flexible foams with densities of more than 150 kg/m³.

Oligomer from self-metathesis of unsaturated triglycerid