Title: BIO-BASED FOAM FROM NATURAL OILS
Number/Link: US2012295993
Applicant/Assignee: Not yet disclosed but probably Univ. Delaware
Publication date: 22-11-2012
“Gist”: Natural oils are functionalized with different (mutually reactive) functional groups, blown/frothed with CO2 and subsequently cured optionally in the presence of chain extenders.
Why it is interesting: The foams of this invention are made from 100% renewable materials and without “toxic” isocyanates. Densities in the examples range from about 15 to 200 kg/m³. While the properties, look and feel of these materials probably do not come close to those of PU foams, they could be interesting competitors in some fields such as packaging foams.
Innovation in Polyurethanes 