Paving joint mortars

Abstract

Polymer powders redispersible in water in paving joint mortars, the paving jointing mortar having approximately 0.5% by weight or more, based on the paving joint dry mortar, of one or more mineral binders, as well as one or more additives and, if necessary, further components. The paving joint mortar can be introduced into a joint in powder form and subsequently watered, or the paving joint mortar can be mixed with water before introduction into the joint and added to the joint in paste form.

1 . Paving joint mortar comprising:
 one or more mineral binders in an amount of about 0.5% by weight or more, based on total dry weight of the paving joint mortar,   one or more additives, and   one or more polymer powders redispersible in water,   wherein the paving joint dry mortar can be added into a joint in powder form and subsequently watered or mixed with water before introducing the mortar into the joint in paste form.   
   
   
       2 . Paving joint mortar according to  claim 1  wherein the one or more mineral binders are present in an amount of approximately 0.5 to 30% by weight, the one or more additives are present in an amount of approximately 30 to 99% by weight, and the one or more polymer powders redispersible in water are present in an amount of approximately 0.5 to 20% by weight, all based on total dry weight of the paving joint mortar. 
   
   
       3 . Paving joint mortar according to  claim 2  wherein the one or more mineral binders are present in an amount of approximately 1.0 to 20% by weight, the one or more additives are present in an amount of approximately 50 to 98% by weight the one or more polymer powders redispersible in water are present in an amount of approximately 1.0 to 15% by weight, all based on total dry weight of the paving joint mortar. 
   
   
       4 . Paving joint mortar according to  claim 1  wherein the one or more polymer powders redispersible in water comprises one or more emulsion polymers, suspension polymers, microemulsion polymers and/or inverse emulsion polymers, each of which have been obtained by drying. 
   
   
       5 . Paving joint mortar according to  claim 4  wherein that the emulsion polymer, suspension polymer, micro-emulsion polymer and/or inverse emulsion polymer is stabilized with one or more high molecular compounds 
   
   
       6 . Paving joint mortar according to  claim 5  wherein that the emulsion polymer, suspension polymer, micro-emulsion polymer and/or inverse emulsion polymer is stabilized with one or more protective colloids and/or with an ionic polymer obtained via radical (co)polymerisation of olefinic monomers in water wherein at least part of the olefinic monomers contains an ionic group. 
   
   
       7 . Paving joint mortar according to  claim 1  wherein the one or more polymer powders redispersible in water comprises at least one polymer based on vinyl acetate, ethylene-vinyl acetate, ethylene-vinyl acetate-vinyl versatate, ethylene-vinyl acetate-vinyl chloride, ethylene-vinyl chloride, vinyl acetate-vinyl versatate, ethylene-vinyl acetate(meth)acrylate, vinyl acetate-vinyl versatate (meth)acrylate, (meth)acrylate, styrene-acrylate, and/or styrene butadiene,
 wherein vinyl versatate is a C 4 - to C 12 -vinyl ester, and   wherein the at least one polymer further comprises 0 to 50% by weight of further monomers, based on total weight of the one or more polymer powders redispersible in water.   
   
   
       8 . Paving joint mortar according to  claim 1  further comprising at least one organic component having functional groups,
 wherein the organic component is in the polymer powder redispersible in water or in the paving jointing dry mortar.   
   
   
       9 . Paving joint mortar according to  claim 8  the functional groups of the at least one organic component further comprise alkoxysilane groups, glycidyl groups, epihalohydrin groups, carboxyl groups, amine groups, hydroxyl groups, ammonium groups, ketone groups, acid anhydride groups, acetoacetonate groups and/or sulfonic acid groups. 
   
   
       10 . Paving joint mortar according to  claim 1  wherein the water is added in the form of a spray mist and/or surface watering. 
   
   
       11 . Paving joint mortar according to  claim 10  wherein the water is added by a lawn sprinkler, water sprinkler, a garden hose with or without distributor nozzle, and/or a watering can. 
   
   
       12 . Paving joint mortar according to  claim 1  wherein the one or more mineral binders are chosen from a hydraulically binding binder, a latent hydraulic binder, and/or a non-hydraulic binder which reacts under the influence of air and water. 
   
   
       13 . Paving joint mortar according to  claim 12  wherein the hydraulically binding binder is at least cement; the latent hydraulic binder is chosen from acidic blast furnace slag, pozzolans and/or metakaolin, and/or a non-hydraulic binder which reacts under the influence of air and water; and the non-hydraulic binder is chosen from calcium hydroxide and/or calcium oxide. 
   
   
       14 . Paving joint mortar according to  claim 1  further comprising components chosen from colour pigments, cellulose ethers, cellulose fibres, water-soluble polymers, in particular polyvinyl alcohol, thickening agents, water retention agents, starch ethers, guar ethers, wetting agents, polycarboxylates, polyacrylamides, hydrophobing agents, air pocket formers, biocides, herbicides, fungicides, defoaming agents, fragrances for keeping away animals, additives for reducing efflorescence, sedimentation and/or separation, setting and solidification accelerators, setting retarders and/or powders which have an alkaline reaction with water.