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US 12,258,459 B2Granted
HydroFluoro olefin propellant in a polyurethane foam composition
AssigneeIcp Construction, Inc.
InventorsAndrew P. Shinko, Anthony J. Taylor
Life of this patent
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Abstract
A process and composition is described for the inclusion of polyether polyols in concentrations greater than 10% loading on the B-side formulation with a catalyst package less than 1% loading on the B-side formulation. In one specific example, the use of glycerin as a fluorine ion scavenger is utilized to improve performance of the polyurethane systems through a twelve-month shelf life.
Claims2
A two component low pressure polyurethane foam comprising:
- an A-side comprising:
- at least one diisocyanate, and
- an HFO propellant;
- and
- a B-side comprising:
- approximately 30-50% by weight of the B-side of at least one polyester polyol;
- approximately 35% or greater by weight of the B-side of at least one polyether polyol;
- approximately 1-15% by weight of the B-side of a triol that comprises glycerin as a fluoride ion scavenger;
- an amine catalyst;
- a catalyst that includes an organotin catalyst;
- and
- an HFO propellant;
- and
- a catalytic decay ratio (gel) is <1.5;
- a catalytic decay ratio (tack-free) is <1.5;
- and
- water in an amount of less than 1% by weight of the B-side prior to inclusion of the HFO propellant at the B-side.
14 more elements
Dependencies are inferred from the claim text.