Heat labile foam-in-place polyurethane foam
AssigneesBattelle Savannah River Alliance, LLC, Nicholas M. Marshall
InventorsEdward T. Ketusky, Mark D. Kranjc, James M. Shuler, Nicholas M. Marshall
Life of this patent
Estimating the term…
Abstract
Disclosed are foamable compositions that can be particularly beneficial for foam-in-place packaging purposes. The foamable compositions can be reacted to form a polyurethane foam that can be utilized to secure packaging contents inside a transport packages, and that at a later time can be readily decomposed at low degradation temperatures, e.g., about 90° C. or less. The polyurethane foam can also act as a sink for hydrogen radicals and as such can be utilized for transport of high energy emitting materials, e.g., γ-radiating materials.
Claims24
A foamable composition comprising:
- a polyol component comprising a first polyol component and a second polyol component;
- a multi-functional isocyanate component;
- a blowing agent;
- and
- a degradation catalyst;
- wherein the foamable composition comprises a first portion and a second portion, the first portion comprising a prepolymer that is the reaction product of the first polyol component and the multi-functional isocyanate component, the second portion comprising the second polyol component;
- wherein either the first or the second polyol component comprises an allylic and/or a benzylic carbonate polyol, the allylic and/or the benzylic carbonate polyol having been formed from at least one polyol including one or more secondary or tertiary R—O linkages;
- wherein upon reaction, the foamable composition forms a polyurethane foam that includes allylic carbonate and/or benzylic carbonate linkages in the polyurethane backbone, the degradation catalyst assisting in the degradation of the polyurethane foam;
- and wherein a foam formed from the foamable composition has a degradation temperature of about 90° C. or less.
A foamable composition comprising:
- a polyol component, the polyol component comprising an allylic and/or a benzylic carbonate polyol, the allylic and/or the benzylic carbonate polyol having been formed from at least one polyol including one or more secondary or tertiary R—O linkages;
- a multi-functional isocyanate component;
- a blowing agent;
- and
- a degradation catalyst;
- wherein upon reaction, the foamable composition forms a polyurethane foam that includes allylic carbonate and/or benzylic carbonate linkages in the polyurethane backbone, the degradation catalyst assisting in the degradation of the polyurethane foam;
- and wherein a foam formed from the foamable composition has a degradation temperature of about 90° C. or less.
Dependencies are inferred from the claim text.