Title: METHOD FOR PRODUCTION OF HEAT INSULATING COMPOSITE MATERIALS AND HEAT INSULATING COMPOSITEMATERIAL PRODUCED THEREBY
Number/Link: WO2013/021324
Applicant/Assignee: HIT KONSULTING
Publication date: 14-02-2013
“Gist”: Expandable polystyrene beads are added to rigid PUR or PIR foam system.
Why it is interesting: EPS beads with a softening temperature of 80-90°C are added to the isocyanate stream in an amount of 15-60% w/w to the total system. The exotherm has to be exactly right to fully expand and not degrade the EPS, and is controlled by the ratio PU/EPS. This idea is not new, but it remains an interesting route to cheap insulation. The claim is relatively narrow so could get granted imo.
Expandable Polystyrene (Wikimedia)
Innovation in Polyurethanes 
bonarmike
/ February 20, 2013You have added here an interesting post, I want to say thanks for sharing this post about thermal Foams Insulation post.