Foam insulation made with expandable microspheres and methods

Details Foam insulation made with expandable microspheres and methods Foam insulation made with expandable microspheres and methods

2007-06-12

2007-06-12

Cooney, Jr., John M. (Department: 1711)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S054000, C521S130000, C521S131000, C521S170000, C521S174000, C523S218000, C523S219000

Reexamination Certificate

active

10478569

ABSTRACT:
A polyurethane and/or polyisocyanurate foam is made using expandable microspheres which encapsulate a primary blowing agent. By expanding during the foam making process, the microspheres function as a blowing agent. The foam preferably has at least 10% by weight expandable micro spheres which encapsulate a non-halogenated hydrocarbon chemical or a non-halogenated hydrocarbon chemical blend and less than 2% by weight of any non-encapsulated blowing agents.

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