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Redispersible powder composition for dry mortar formulations

A composition and formulation technology, applied in the field of preparing dry mortar formulations, prolonging the drying time of dry mortar formulations, and redispersible powder compositions, can solve problems such as loss of binding properties

Inactive Publication Date: 2012-02-22
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While conventional mortars may result in a loss of bonding properties, the extended open-time properties of tile adhesives will give installers the time they need to achieve optimum adhesion

Method used

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  • Redispersible powder composition for dry mortar formulations
  • Redispersible powder composition for dry mortar formulations
  • Redispersible powder composition for dry mortar formulations

Examples

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preparation example Construction

[0049] The present invention also provides a method of preparing the modified dry mortar formulation. The preparation method comprises the following steps: a) providing a standard dry mortar formulation, b) mixing the modifier composition detailed above with the standard dry mortar formulation, wherein the compound of the modifier composition Can be mixed with said standard dry mortar formulations independently or in combination. Preferably, based on the weight of the modified dry mortar formulation, the content of the modifier composition is 0.3-40%, preferably 0.4-30%, more preferably 0.5-15%.

[0050]When preparing the modified dry mortar formulations of the present invention, the relative amounts of essential and optional compounds in the modifier composition should be adapted to the total amount required for the final modified dry mortar formulation. As known to those skilled in the art, the modifier compositions can be prepared with appropriate amounts of required and o...

Embodiment

[0063] The performance of the cementitious tile adhesives of the present invention was investigated by comparing various formulations in dry mortar with and without superplasticizer without changing the water-solids ratio.

[0064] In Tables 2 and 3, the tested formulations as reference as well as the formulations of the invention are listed. No. 1-6 formulations (Table 2) are used as reference, and No. 7-12 formulations (Table 3) are formulations of the present invention.

[0065] All formulations contain the following components as a base: 30% by weight of Ordinary Portland cement CEM 1 42.5R (Holcim, Germany), 33.275% by weight of siliceous sand F32 (Kurz, Germany) Microgram Furuike (Quarzwerke Frechen, Germany)), 33.275% by weight of siliceous sand F 36 (Germany's Kozwerke Frechen (Quarzwerke Frechen, Germany)) and 0.45% by weight of Walocel MKX 15000PF01 (hydroxyethyl methyl Cellulose based, Dow Wolff Cellulosics, Germany). Additionally, all formulations contained 3% by...

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Abstract

The present invention relates to a redispersible powder composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA). The invention further relates to a dry mortar formulation comprising said redispersible powder composition. Furthermore, the invention is directed to a method of increasing the open time of a dry mortar formulation without deteriorating the mechanical strength of the cured dry mortar formulation.

Description

technical field [0001] The present invention relates to redispersible powder compositions for the preparation of dry mortar formulations, in particular cement bonded brick and tile adhesives (CBTA). The invention also relates to dry mortar formulations comprising said redispersible powder composition. In addition, the present invention relates to a method of extending the open time of a dry mortar formulation without reducing the mechanical strength of the cured dry mortar formulation. Background technique [0002] Brick and tile adhesives are used to lay tiles on the floors or walls of residential and commercial buildings. Depending on local building techniques, regional needs and building traditions, codes and guidelines for raw materials as well as performance standards and testing adhesives may vary from country to country. [0003] In addition to the aforementioned differences, in any case, important performance criteria include tensile bond strength, open time, and s...

Claims

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Application Information

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IPC IPC(8): C08L31/04C08L25/10C08L51/08C08K3/34C04B24/26
CPCC04B28/04C04B40/0042C04B2111/00637Y02W30/91C04B14/06C04B14/106C04B20/0076C04B24/2647C04B24/2676C04B24/383C04B40/0608C04B14/16C04B24/2682C04B2103/0057C04B2103/0088C04B14/08C04B24/2611C04B18/08C04B24/2641C04B14/14C04B24/26
Inventor L·芬格勒R·基塞韦特
Owner DOW GLOBAL TECH LLC
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