Insulation boards and methods for their manufacture

Details Insulation boards and methods for their manufacture Insulation boards and methods for their manufacture

2003-08-01

2010-11-23

Cooney, John (Department: 1796)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S130000, C521S131000, C521S170000, C428S304400, C428S423100

Reexamination Certificate

active

07838568

ABSTRACT:
A method of manufacturing a polyisocyanurate foam insulation board, the method comprising contacting a stream of reactants that comprise an isocyanate-reactive compound with a stream of reactants that include an isocyanate compound to form a reaction product, where the step of contacting takes place in the presence of a blowing agent and a low-boiling inert gas, and where the amount of low-boiling inert gas present at the time of the contacting is sufficient to result in frothing of the reaction product.

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patent: WO 00/24813 (2000-05-01), None
patent: WO 02/072680 (2002-09-01), None

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