Stable, foamed caulk and sealant compounds and methods of use thereof
AssigneeDAP Products Inc.
InventorsPatrick J. Lucas, Anthony J. Taylor
Life of this patent
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Abstract
Stable foam caulk, sealant and insulation compositions are disclosed. The compositions comprise solid, waxy non-ionic lipophilic surfactants having low HLB values. These surfactants, upon foamed dispensing of the composition, provide stable support for bubbles formed from drying of a latex emulsion of a film forming polymer and a volatile liquid hydrocarbon propellant. In addition to use in caulking, sealant or insulation methods, the composition can be used to form artificial terrains and other hardenable structural surfaces as backgrounds or support means for hobbies, crafts, and the like.
Claims13
Method of providing an insulating layer between structural units comprising applying a layer of a foamable composition adjacent one of said structural units, said foamable composition comprising:
- (a) an aqueous emulsion comprising a film forming polymer
- (b) a liquid propellant;
- and
- (c) a solid, lipophilic non-ionic surfactant having an HLB value of about 3-8, said composition exhibiting a volumetric expansion about 18-24 hours after said dispensing of about 0.45 and greater.
Dependencies are inferred from the claim text.