Blowing agent enhancers for polyurethane foam production

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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C252S067000, C252S068000, C252S069000, C252S364000, C516S012000, C521S112000, C521S116000, C521S117000, C521S131000, C521S170000, C521S174000

Reexamination Certificate

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06921779

ABSTRACT:
Rigid polyurethane blowing agent enhancers, methods for using them, and the products produced by these methods are disclosed. The enhancers are low molecular weight alcohols and/or ethers that assist the action of blowing agents comprising a hydrohalocarbon compound.

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patent: WO 02/26913 (2002-04-01), None

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