Silicone Foams Prepared Using Non-Fluorinated Blowing Agents
AssigneeHenry Company, LLC
InventorsAlex Ionkin, Divya Chopra
Life of this patent
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Abstract
Disclosed herein are new types of foam insulation, and in particular, foam insulation for the exterior surfaces of residential, industrial, institutional or commercial buildings made using new silicone spray foam systems. These inventions relate to isocyanate-free foams used for thermal insulation, flame-retardancy and water resistance. The foams are prepared from silicone polymers with non-fluorinated blowing agents and can be used in the construction industry.
Claims40
A pre-foam mix, comprising:
- (i) at least one foamable silicone pre-polymer;
- and
- (ii) one blowing agent comprising at least one non-fluorinated blowing agent.
A foam, comprising at least one partially-cured silicone polymer and at least one non-fluorinated blowing agent.
A foam, comprising at least one partially-cured silicone polymer, wherein said foam is prepared using at least one non-fluorinated blowing agent.
A foam, comprising at least one substantially-cured silicone polymer and at least one non-fluorinated blowing agent.
A foam, comprising at least one substantially-cured silicone polymer, wherein said foam is prepared using at least one non-fluorinated blowing agent.
A process for preparing a foam, comprising at least one foamable silicone polymer, said process comprising the steps of:
- preparing a pre-foam mix, comprising:
- (i) at least one foamable silicone pre-polymer;
- and
- (ii) at least one blowing agent comprising at least one non-fluorinated blowing agent;
- optionally mixing one or more additional silicone pre-polymers into the pre-foam mix;
- removing at least a portion of said at least one blowing agent;
- and
- partially or substantially fully curing said at least one foamable silicone pre-polymer or said product of optionally mixing one or more additional silicone pre-polymers.
A method for insulating an exterior surface of a building comprising, spraying the exterior surface of the building with a mixture of silicone pre-polymer and a blowing agent, to produce a silicone foam, wherein said silicone foam is prepared by curing the silicone pre-polymer, and optionally at least one surfactant, wherein said silicone foam has an open-cell structure, a close-cell structure, or a hybrid-structure, and wherein said open cell structure comprises cells which are essentially open, but also includes some randomly occurring, solid cell walls.
A method for insulating the exterior surface of a building, comprising:
- spraying a mixture of silicone pre-polymers on to a sheathing material of the exterior surface of a building to produce a silicone foam layer on the sheathing material, wherein said foam is prepared by reacting a first silicone pre-polymer as an A component, and a second silicone pre-polymer as a B Component, wherein one or both of the A and B components comprise a non-fluorinated blowing agent and optionally at least one surfactant, and said silicone foam layer having an open-cell, close-cell, or hybrid structure, wherein said silicone foam has a foam density of between 50 and 350 kg/m3, and has a cell size of between 0.03 μm and 1.5 μm, so that said silicone foam layer acts as a water and air barrier, while also being water permeable;
- and
- covering said open cell silicone foam layer with one or more of brick, wood, wood siding, wood composite siding, vinyl siding, or aluminum siding.
Dependencies are inferred from the claim text.