Coating agents for producing permanently flexible coatings

Abstract

The invention relates to coating agents on the basis of one or more mineral binders, one or more polymers, one or more fillers and optionally one or more additives, characterised in that 2 to 30% by weight of lime, based on the dry weight of the coating agent, is contained in the coating agent as mineral binder.

Description

technical field

[0001] The present invention relates to coating compositions based on mineral binders, polymers and fillers and their use for producing durable flexible coatings. Background technique

[0002] The use of coating compositions based on mineral binders, polymers and fillers for the production of flexible coatings in the construction sector is known. Coating compositions of this type are used as grouts, for example as described in US 6,166,113 or DE-A 196 20 817 . US 4,710,526 discloses plaster compositions based on cement and cationic polymers for the preparation of flexible coatings with good adhesion properties. KR 10-0913255 describes cementitious polymer-modified stucco compositions for the production of building products with enhanced mechanical and chemical resistance. GB 1 236 263 discloses compositions based on mineral binders, fillers and polymers and additives, such as hydroxycarboxylic acids. US 5,543,188 describes film compositions comprising a po...

Examples

Embodiment 1

[0058] Coating compositions were prepared by adding the ingredients of the following formulations to a Toni mixer (commercial test mixer) under agitation in the following order: first the slaked lime, then the filler, dispersion powder and finally the rest of the additives. After this, mix well on setting 1 for 15 minutes. From the resulting dry mix, aqueous coating compositions were prepared using the stated amounts of water in the manner described in EN 196-1.

[0059] The aqueous coating composition was applied at a wet film thickness of 2 mm on a Teflon formwork assembly (bottom area: 30 x 15 cm). Smooth the wet film with a trowel. After 24 hours of storage under standard conditions according to DIN 50014, the film was cured and after removal of the Teflon formwork components it was placed under the following storage conditions:

[0060] - store one film under standard conditions (23°C / 50% relative humidity) for 28 days (dry storage),

[0061] - Following the dry storag...

technical field

[0001] The present invention relates to coating compositions based on mineral binders, polymers and fillers and their use for producing durable flexible coatings. Background technique

[0002] The use of coating compositions based on mineral binders, polymers and fillers for the production of flexible coatings in the construction sector is known. Coating compositions of this type are used as grouts, for example as described in US 6,166,113 or DE-A 196 20 817 . US 4,710,526 discloses plaster compositions based on cement and cationic polymers for the preparation of flexible coatings with good adhesion properties. KR 10-0913255 describes cementitious polymer-modified stucco compositions for the production of building products with enhanced mechanical and chemical resistance. GB 1 236 263 discloses compositions based on mineral binders, fillers and polymers and additives, such as hydroxycarboxylic acids. US 5,543,188 describes film compositions comprising a po...

Examples

Embodiment 1

[0058] Coating compositions were prepared by adding the ingredients of the following formulations to a Toni mixer (commercial test mixer) under agitation in the following order: first the slaked lime, then the filler, dispersion powder and finally the rest of the additives. After this, mix well on setting 1 for 15 minutes. From the resulting dry mix, aqueous coating compositions were prepared using the stated amounts of water in the manner described in EN 196-1.

[0059] The aqueous coating composition was applied at a wet film thickness of 2 mm on a Teflon formwork assembly (bottom area: 30 x 15 cm). Smooth the wet film with a trowel. After 24 hours of storage under standard conditions according to DIN 50014, the film was cured and after removal of the Teflon formwork components it was placed under the following storage conditions:

[0060] - store one film under standard conditions (23°C / 50% relative humidity) for 28 days (dry storage),

[0061] - Following the dry storag...

Images