Blowing agent blends

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

Reexamination Certificate

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Details

C521S174000, C510S412000, C510S415000

Reexamination Certificate

active

07053132

ABSTRACT:
Foam blowing agent blends of trans-1,2-dichloroethylene and one or more pentanes are provided, as are polyol premixes and foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire resistance.

REFERENCES:
patent: 5196137 (1993-03-01), Merchant
patent: 5607912 (1997-03-01), Samejima et al.
patent: 6288135 (2001-09-01), Bement et al.
patent: WO 97/41189 (1997-11-01), None

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