One-component spray foam compositions and dispensers thereof
AssigneeDap Global Inc.
InventorsKenneth Rueschhoff, Nicholas Yeates, James Kenney, Jay Zhang, Kevin Corcoran
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Abstract
Described herein are one-component spray foam compositions having a low post post-expansion rate. Also described herein are methods of making and using one-component spray foam compositions having a low post-expansion rate. Also described herein are dispensers for dispensing the one-component spray foam compositions having a low post-expansion rate. Compositions and methods in accordance with the present disclosure are useful in a wide variety of applications, and are particularly useful in construction applications.
Claims20
A one-component polyurethane spray foam composition comprising:
- (a) an isocyanate-containing compound selected from the group consisting of 4,4′-diphenylmethane diisocyanate, polymeric 4,4′-diphenylmethane diisocyanate, prepolymers based on 4,4′-diphenylmethane diisocyanate, and combinations thereof, wherein the isocyanate-containing compound comprises an isocyanate (NCO) content;
- (b) a polyol comprising a hydroxyl (OH) content;
- (c) a propellant;
- (d) optionally a flame retardant;
- (e) optionally a plasticizer;
- (f) optionally a surfactant;
- and
- (g) optionally a catalyst;
- wherein a ratio of NCO:OH is in a range of from about 3.5 to about 5.5;
- wherein a cured composition is producible from the one-component polyurethane spray foam composition.
Dependencies are inferred from the claim text.