Open cell spray fire-retardant foam
AssigneeJohns Manville
InventorsScott Snider, Lance Wang, Jawed Asrar
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Abstract
Embodiments of the present technology may include an open cell spray polyurethane foam. The foam may include a polymer. The polymer may formed by the polymerization of a reaction product of (1) a saccharide with an epoxide and (2) an isocyanate. The reaction product may have greater than 25 weight percent and less than 99 weight percent of the saccharide. The foam may exhibit a fire retardancy sufficient to pass flame tests in accordance with Appendix X and/or ASTM E-4.
Claims20
An open cell spray polyurethane foam, the foam comprising a polyurethane formed by a polymerization of:
- a polyether polyol consisting of a product formed by a reaction of reactants consisting of a saccharide with an epoxide, wherein greater than 25 wt. % and less than 99 wt. % of the polyether polyol is from the saccharide;
- and
- an isocyanate, wherein:
- the saccharide is sucrose, and
- the foam excludes greater than 10 wt. % free sucrose.
A formulation for forming an open cell spray foam, the formulation comprising by weight:
- 16-61% a polyether polyol consisting of a product formed by a reaction of reactants consisting of a saccharide with an epoxide, wherein greater than 25 wt. % and less than 99 wt. % of the polyether polyol is from the saccharide, wherein the formulation excludes greater than 10 wt. % free sucrose.
Dependencies are inferred from the claim text.