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Flexible watertight roof coatings

A coating, coating technology for the manufacture of roof coatings, polymer blends, capable of solving problems not described with crack bridging qualities or permanently flexible roof coatings

Inactive Publication Date: 2013-05-29
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, roof coatings with crack bridging qualities or permanent flexibility are not described

Method used

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  • Flexible watertight roof coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1 (Ex.1):

[0063] For preparing the coating composition, the ingredients of the dry formulation shown below were placed in a Toni mixer (factory laboratory mixer) and mixed homogeneously on stage 1 for 15 minutes. An aqueous coating composition was prepared from the resulting dry mixture in a similar manner to EN 196-1, using 32% by weight of water, based on the total weight of the dry formulation.

[0064] Dry formula:

[0065] 10% by weight Portland cement,

[0066] 30% by weight quartz sand (diameter: 0.063mm to 0.3mm),

[0067] 13.4% by weight calcium carbonate,

[0068]0.5% by weight of highly dispersible silica (Wacker HDK H15),

[0069] 0.5% by weight defoamer (polysiloxane (silicone) defoamer),

[0070] 1.5% by weight bentonite,

[0071] 44.1% by weight of VINNAPAS LL4040N (vinyl acetate-ethylene copolymer stabilized with polyvinyl alcohol and cationic protective colloid).

[0072] The aqueous coating composition was coated onto a Teflon formw...

Embodiment 2

[0075] Example 2 (Ex.2):

[0076] Similar to Example 1, except that the following dry formula and the following amounts of water were used to prepare the coating composition:

[0077] Dry formula:

[0078] 20% by weight Portland cement,

[0079] 35.9% by weight quartz sand,

[0080] 2% by weight titanium dioxide,

[0081] 0.6% by weight accelerator (calcium formate),

[0082] 1.5% by weight bentonite,

[0083] 40% by weight of VINNAPAS 7055N (vinyl acetate-ethylene-vinyl ester terpolymer stabilized with polyvinyl alcohol).

[0084] Based on the total weight of the dry formulation, 30% by weight of water was used.

Embodiment 3

[0085] Embodiment 3 (Ex.3):

[0086] Similar to Example 1, except that the following dry formula and the following amounts of water were used to prepare the coating composition:

[0087] Dry formula:

[0088] 13% by weight Portland cement,

[0089] 5% by weight aluminate cement,

[0090] 32% by weight quartz sand,

[0091] 5% by weight lightweight filler,

[0092] 13.4% by weight calcium carbonate,

[0093] 0.1% by weight blocker (sodium tartrate),

[0094] 0.5% by weight of highly dispersible silica (Wacker HDK H15),

[0095] 0.3% by weight polyacrylonitrile fibers,

[0096] 0.7% by weight thickener (acrylate thickener),

[0097] 30% by weight of VINNAPAS 5044N (vinyl acetate-ethylene copolymer stabilized with polyvinyl alcohol).

[0098] Based on the total weight of the dry formulation, 35% by weight of water was used.

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Abstract

The invention provides for the use of coating compositions based on one or more mineral binders, one or more polymers, one or more fillers, and, if desired, one or more additives for producing roof coatings, the coating compositions comprising at least 50% by weight of polymers, based on the dry weight of the polymers and of the mineral binders.

Description

technical field [0001] The present invention relates to the use of a coating composition for the manufacture of a roof coating, to a method for the manufacture of a roof coating, and to the roof coating obtainable thereby, and to a polymer comprising vinyl ester and polymer mixtures in the form of aqueous dispersions of (meth)acrylate polymers or water-redispersible powders. Background technique [0002] The roof coating constitutes the top coat on the roof. Roof coatings protect the roof and thus also the entire construction from the weather, more particularly from rain, dew, fog, snow or extreme temperatures. Thus, the roof coating is not a wall nor is it a roof structure, ie not a frame of the roof, but a skin applied to the roof frame. Thus, the roof coating is applied on the outer surface of the roof, ie on the side of the roof facing the environment, and not on the inside, ie on the side facing the interior of the building. Thus, the roof coating is the outer layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/48C04B41/63C04B24/26C04B28/04C04B40/06C04B26/04
CPCC09D5/024C04B41/4869C04B24/2623C04B24/2641C04B28/04C04B40/0608C09D1/08C04B24/2688C04B41/63C04B26/04
Inventor 哈迪·黑罗尔德加里·P·菲舍尔肯尼思·科姆品斯基安克·赖因施密特
Owner WACKER CHEM GMBH
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