Title: ISOCYANATE-BASED POLYMER FOAM COMPOSITE WITH IMPROVED THERMAL INSULATION PROPERTIES

 Number/Link: US20140151593

Applicant/Assignee: Dow

Publication date: 5-06-2014 (Priority PCT/US)

“Gist”: Use of fluorinated carbon black to improve insulation value of rigid polyurethane foams

Why it is interesting: It is known that carbon black can be used to improve the insulation value of rigid foams by reducing the radiation component of the thermal conductivity. The carbon black however needs to have a very small particle size and needs to be extremely well dispersed into the reacting medium. According to the invention using a fluorinated carbon black improves the dispersion into the raw materials which, in turn, improves the final insulation value of the foam.
A small but valuable innovation.

Different grades of carbon black