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Room temperature crosslinked foam

A foam and cross-linking agent technology, applied in the direction of building, building structure, etc., to improve the cell structure and reduce the threat of damage

Inactive Publication Date: 2012-03-21
OWENS CORNING INTELLECTUAL CAPITAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Despite these attempts to reduce or eliminate the use of isocyanates in spray foams and / or reduce emissions of isocyanates into the air, there remains a need in the art for non-toxic and environmentally friendly spray foams

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Table 1 sets forth components that may be used to prepare at least one exemplary embodiment of the foam of the present invention.

[0123] Table 1

[0124]

[0125]

[0126]

[0127] Contemplated examples of forming the foam, encapsulated catalyst, and reaction mixture using the exemplary components identified in Table 1 are set forth in Tables 2, 3, and 4.

[0128] Table 2 - Two-Part Foam Compositions

[0129]

[0130]

[0131] Table 3 - Encapsulated crosslinkers and blowing agents

[0132] components

Packaging material 1 (g)

Packaging material 2 (grams)

Packaging material 3 (grams)

Packaging material 4 (grams)

sodium bicarbonate

14

7

7

citric acid

14

7

7

XAMA

20

20

20

Melamine formaldehyde

10

10

10

10

[0133] Table 4 - One-Part Foam Compositions

[0134] components

Foam 1 (gram)

Foam 2 (grams)

...

Embodiment 2

[0139] Embodiment 2: the mensuration of air leakage

[0140] Air leakage for various wall constructions was determined in accordance with the standards set forth in ASTM E283, which is hereby incorporated by reference herein in its entirety. The frame structure is formed by conventional frame columns spaced 16 inches from each other, the outer walls of which are provided with a sheath formed of corrugated cardboard, and figure 2 Similar to that shown in . Table 5 presents the different replicates of the sample wall structure and the respective air leakage results.

[0141] Table 5 - Air Leakage

[0142]

[0143]

[0144] a) Due to the very high leakage of these samples, the results shown are estimates.

[0145] As shown in Table 5, it was demonstrated that the wall structure using the foam of the present invention had much lower air leakage than the wall structure not comprising any foam of the present invention. For example, a wall structure that was insulated and ...

Embodiment 3

[0146] Example 3: Foam Rate of Foams Comprising Sodium Bicarbonate

[0147]Foams according to the invention were prepared according to the procedure described above. Specifically, a first component comprising a functionalized resin (i.e. carboxylated acrylic latex) and an acid (i.e. polyacrylic acid) and a second component comprising a room temperature crosslinker (i.e. polyfunctional aziridine) and sodium bicarbonate Mix in portions to allow the components to react to form a foam. The foam was foamed to 700ml expansion. In one sample, the sodium bicarbonate had an average particle size of 50 microns. In the second sample, the sodium bicarbonate had an average particle size of 11 microns. The results are shown in Table 6.

[0148] Table 6 - Foaming Rates Due to Sodium Bicarbonate

[0149] Particle size of sodium bicarbonate (microns)

[0150] As shown in Table 6, sodium bicarbonate with an average particle size of 11 microns achieved swelling of 700 ml in 28 sec...

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Abstract

Low rise, user friendly latex foams for sealing insulative cavities of a building are provided. The foams may be applied to the interface of the sheathing and the studs within the insulative cavities to reduce air leaks. The latex foams may also be applied to the face of the studs to obtain an additional seal against air infiltration. The foam can be used to affix fiberglass batts, batt flanges, and vapor barriers to the framing without mechanical fasteners. A tackifier may be added to impart an adhesive quality to the foam. The tacky nature of the foam permits the drywall or vapor barrier to be repositioned without damage. Drywall is held onto the face of the studs by the tacky foam while mechanical fasteners are inserted to permanently affix the drywall to the framing. The compressive nature of the foam permits drywall to be attached without significant bowing or detachment.

Description

[0001] Technical Field and Industrial Applicability of the Invention [0002] The present invention relates generally to spray foams, and more particularly to user-friendly foams made of latex for filling cavities, cracks and gaps to improve the sealing and insulating properties of buildings. A method of making the foam is also provided. Background of the invention [0003] Spray foam has found widespread use in the fields of insulation and structural reinforcement. For example, spray foam is commonly used to insulate or impart structural strength to objects such as automobiles, heat sinks, refrigerators, boats, and building structures. In addition, spray foams are used in applications such as upholstery for furniture and bedding, underlayment for carpet underlays, sound absorbing materials, fabric laminates, and energy absorbing materials. Currently, spray foam, especially those used as insulators and sealants for home walls, is polyurethane spray foam. [0004] Polyuretha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08J9/30
CPCC08J3/241C08J2201/024C08J9/08E04F21/085C08J9/0023
Inventor M·考温-埃德森F·奥朗R·奥利瑞
Owner OWENS CORNING INTELLECTUAL CAPITAL LLC