Process or improving the insulating capacity of expanded...

Details Process or improving the insulating capacity of expanded... Process or improving the insulating capacity of expanded...

2006-04-13

2010-11-02

Mulcahy, Peter D (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S057000, C521S080000, C521S146000, C521S147000, C521S148000, C524S495000, C524S496000

Reexamination Certificate

active

07825165

ABSTRACT:
Process for improving the insulating capacity of expanded vinyl aromatic which comprises:1) preparing beads of expandable vinyl aromatic polymers containing 1-10% by weight, calculated with respect to the polymer, of an expanding agent englobed in the polymeric matrix and 0.001-25% by weight, calculated with respect to the polymer (a), of an athermanous additive comprising carbon black homogeneously distributed in the polymeric matrix;2) treating the surface of the beads, before deposition of the coating, with a liquid lubricating agent; and3) thermally treating the beads with hot air at a temperature ranging from 30 to 60° C.

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English translation of the Notification of Transmittal of the International Preliminary Report on Patentability ( The references identified in notice were filed in the first Information Disclosure Statement dated Oct. 15, 2007.
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