Weather-resistive barrier for buildings

A building and weather resistance technology, applied in the direction of building structure, building, building components, etc., can solve the problems of cladding bending, undulation, use, etc.

Active Publication Date: 2009-06-03
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, foam is designed to seal slits and is not suitable for use on joints with an open space on one side
As a result, these foams tend not to bond well to wood or plaster sheathing, resulting in uneven joint coverage
But when these foams are dry, they are difficult to compress, so they are not usually used to seal the seams between sheathing sheets, because when the cladding is applied, the expanded foam cannot be compressed, causing cladding curve or undulate outward from the building

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0039] Examples 1-8: Foam Formation and Evaluation.

[0040] Add 80 g of polymer emulsion Rhoplex with gentle mixing TM Surfactants are added to EC-2540 (Tg-10°C). The liquid mixture was placed in the mixing bowl of a 5 liter Hobart bakery mixer and then whipped at high speed (#3) for 5 minutes with a whisk unit. The density of the resulting foam was measured by scooping the foam into a 135 ml paper cup, striking level, and then weighing.

[0041] In order to verify whether the foam has the ability to be compressed to a thickness of less than 2 mm after drying under a pressure of not more than 0.035 MPa, the following test is used. The foam prepared above was spread on a flat plate in strips 50 mm wide and 12 mm thick (2 x 0.5 inches). After drying for 24 hours, the thickness of the bars was measured and noted in Table 1 as "H24h".

[0042] A 75 mm long x 25 mm wide x 3.3 mm thick plate of duralumin was placed over the strip of dried foam completely across the width of th...

Embodiment 9-12

[0045] Examples 9-12 Additional latexes

[0046] Foams were formed from other latexes in the same manner as in Examples 1-8. Their properties are shown in Table 2.

[0047] Table 2 Foams formed from additional emulsion polymers All used 80 grams of emulsion, 0.8 grams of Stanfax-234 and 0.8 grams of Stanfax-320

[0048] Reality

Embodiment 13

[0049] Example 13 Foams containing lower polymer fractions and high amounts of surfactant

[0050] 50g Rhoplex TM A mixture of EC-2540, 10 grams of water, 40 grams of Stanfax-234 and 10 grams of Stanfax-320 was whipped into a foam as in Examples 1-8.

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Abstract

The present invention forms a weather-resistive barrier on a building by applying a compressible latex foam on the gaps between adjacent sheets of construction sheathing and coating the sheets and the foam with an aqueous coating composition.

Description

[0001] This application claims priority under US 35 U.S.C. 119(e) to US Provisional Patent Application No. 61 / 000,486, filed October 26, 2007. technical field [0002] The present invention relates to a method of manufacturing a weather resistant barrier for buildings. Background technique [0003] Many buildings are constructed with wood-, cement- or plaster-based sheets that are exteriorly attached to a decorative surface or cladding such as wood, aluminum or vinyl-based panels. In the construction of these buildings, flexible sheets (such as Tyvek, linoleum or tar paper from DuPont) are nailed or U-shaped in many cases before the cladding material is installed. Nailed to the sheathing of the construction. These sheets provide some protection while the building is being constructed and after the cladding has been installed. These protections include resistance to wind and liquid water penetration. [0004] But using these flexible sheets is very laborious because the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/62
CPCC08J2333/06E04B1/68C08J9/30Y10T156/10B05D3/00E04B1/92
Inventor M·D·鲍I·克雷拉J·C·茨威克辛克
Owner ROHM & HAAS CO
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