Abstract:
The present invention relates to a water-based waterproof composition for coating different substrates characterized in that it is formulated by including a elastomeric acrylic comprising a mechanical reinforcing fiber of an elastic material produced by a fiber yarn process, that, once applied and dried keeps its elongation properties.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates generally to the chemical industry, particularly it relates to the coating production industry and especially to the production of waterproofing compositions for roof and other building elements in civil work. 
       BACKGROUND OF THE INVENTION 
       [0002]    Products on the market, known so far, are fiberless elastomeric acrylic waterproof products that are applied on a surface and, before the first layer dries, a reinforcing fabric roll is extended over and, after it dries, a second hand is applied. Other waterproof products carry reinforcing materials containing fiber material, said fiber being non-elastic polyester or cellulose, other materials include, among others, rubber from ground tires. 
         [0003]    Most of the common reinforcing fibers available on the market are acrylic, polyester, polypropylene, nylon, cellulose, glass fibers, among others, and their use result in being too rigid, i.e. flexible but elastic. 
         [0004]    Current waterproof products carry, as an application system, a reinforcing fiber which rises application labor and materials costs, extend application time and require specialized manpower. The ever-changing weather that cause drastic fluctuations in temperature, relative humidity, frequent rain in rainy seasons, etc., renders the reinforcing fiber brittle and impaired in the short term. 
         [0005]    Also, in conditions where waterproof products are kept dry, elasticity deteriorates causing reinforcing fabric&#39;s breakdown which in turn causes crevices and cracks on the waterproof product surface, and therefore adversely affecting said waterproof product surface. 
         [0006]    Because of the above, an elastomeric acrylic waterproof composition which could address the drawbacks set forth, while also being durable, elastic, easily applicable, and which gives the best results and greatest efficiency, would be of great advantage over waterproof compositions currently known in the art. 
       OBJECTS OF THE INVENTION 
       [0007]    The primary object of the present invention is to make available an elastomeric acrylic waterproof composition that is easily applicable without the need of specialized manpower and not necessitating the use of a reinforcing fiber. 
         [0008]    Another object of the present invention is to make available said elastomeric acrylic waterproof composition, which further, at high temperature and low relative humidity conditions, neither reduces its elongation nor affects its physical and chemical properties. 
         [0009]    Another object of the invention is to make available said elastomeric acrylic waterproof composition that further does not require the use of a reinforcing fiber to bring both good performance and efficiency. 
         [0010]    Another object of the invention is to make available said elastomeric acrylic waterproof composition that also reduces application times. 
         [0011]    Yet another objective of the invention is to allow for the elastomeric acrylic waterproof composition to be used in any kind of weather, thanks to its weather resistance without any loss in its properties. 
         [0012]    Still another object of the invention is to make available said elastomeric acrylic waterproof composition that additionally does not require the use of any further product to provide excellent waterproofing to different substrates. 
         [0013]    Still another object of the invention is to make available said elastomeric acrylic waterproof composition which further allows for the blockage of both water and humidity infiltration. 
         [0014]    Additional features and objectives will be apparent from both the general and detailed description of the present invention when supported by the illustrated embodiments. 
     
    
     DESCRIPTION OF THE INVENTION 
       [0015]    Generally, the waterproof composition consists of an elastomeric acrylic waterproof composition comprising a mechanical reinforcing fiber of an elastic material produced by a fiber yarn process that, once applied and dried keeps its elongation properties. 
         [0016]    The basic aspect of the elastomeric acrylic waterproof composition is the use of elastic fibers of any gauge and length. 
         [0017]    The main role of said elastomeric acrylic waterproof composition is waterproofing of concrete or polyurethane roofs, wood or asbestos sheets. 
         [0018]    The composition is designed such that the use of a reinforcing fabric is not necessary and therefore this step is avoided, in this way a single layer is applied over the substrate surface previously primed, then it is left to dry an then a second layer can be applied. 
         [0019]    The waterproof composition comprises a binder resin, a film forming coalescer, a rheology modifier, a stabilizer dispersant, a preservative, a pH buffer, moistener, a diluent, a foam controller, a drying controller, fillers and extenders, and an elastic mechanical reinforcement. 
         [0020]    Also, the waterproof composition can include a water softener and pigments. 
         [0021]    The binder resin comprises preferably a 50% styrenized emulsified acrylic resin, said film forming coalescer comprises preferable a pentane diol solvent, said rheology modifier, comprises a water-based acrylic thickener, said stabilizer dispersant comprises a poly-acrylic salt, said preservative consists of a formaldehyde solution, said pH buffer comprises a 28% ammonium hydroxide solution, said moistener comprises an alkyl phenol, said diluent consists of industrial water, said foam regulator comprises wax and naphtha, said drying controller being a glycolic solvent, the filler and extenders comprise calcium carbonate, and said elastic mechanical reinforcement consists of elastic fiber. Said water softener comprises a phosphated salt and said pigment is selected from white pigment like titanium dioxide or terracotta pigment like red and/or yellow iron oxide. 
         [0022]    The table below shows the waterproof composition and the function of each element in the formula thereof. 
         [0000]    
       
         
               
               
               
             
           
               
                   
                   
               
               
                   
                 COMPOUND 
                 FUNCTION 
               
               
                   
                   
               
             
             
               
                   
                 Industrial water 
                 Diluent 
               
               
                   
                 Alkyl phenol 
                 Moistener 
               
               
                   
                 Titanium dioxide 
                 White pigment 
               
               
                   
                 Calcium carbonate 
                 Filler and extender 
               
               
                   
                 Wax and naphtha emulsifier 
                 Foam regulator 
               
               
                   
                 Water based acrylic thickener 
                 Rheology modifier 
               
               
                   
                 Elastic fiber 
                 Mechanical reinforcement 
               
               
                   
                 Emulsified 50% styrinized acrylic resin 
                 Binder resin 
               
               
                   
                 Phosphated salt 
                 Water softener 
               
               
                   
                 Poly-acrylic salt 
                 Stabilizer dispersant 
               
               
                   
                 37% Formaldehyde solution 
                 Preservative 
               
               
                   
                 28% Ammonium Hydroxide solution 
                 pH buffer 
               
               
                   
                 Glycolic solvent 
                 Drying controller 
               
               
                   
                 Pentane diol solvent 
                 Film forming coalescer 
               
               
                   
                   
               
             
          
         
       
     
         [0023]    Preferably, said waterproof product has the following quantitative composition, wherein two qualities are noted: 
         [0000]    
       
         
               
               
               
             
               
               
               
               
             
               
               
               
               
               
             
               
               
               
               
             
           
               
                   
               
               
                   
                 ‘MEGA’ 
                 ‘ULTRA’ 
               
               
                   
                 QUALITY 
                 QUALITY 
               
               
                 WATERPROOF COMPOUNDS 
                 Quantity 
                 Quantity 
               
             
          
           
               
                   
                 Quantity 
                 Exact  
                 Exact  
               
               
                   
                 Weight % 
                 amount 
                 amount 
               
               
                 COMPOUND 
                 range 
                 Weight % 
                 Weight % 
               
               
                   
               
             
          
           
               
                  1.  
                 Industrial water 
                 20.00-28.00 
                 26.85 
                 22.05 
               
               
                  2.  
                 Alkyl phenol 
                 0.03-0.30 
                 0.05 
                 0.05 
               
               
                  3.  
                 Titanium dioxide 
                  0.00-10.00 
                 2.30 
                 5.50 
               
               
                  4.  
                 Calcium carbonate 
                   20-40.00 
                 34.00 
                 29.30 
               
               
                  5.  
                 Wax and naphtha emulsifier 
                 0.20-1.00 
                 0.40 
                 0.40 
               
               
                  6.  
                 Water based acrylic thickener 
                 0.50-2.00 
                 1.00 
                 1.00 
               
               
                  7.  
                 Elastic fiber 
                 0.50-3.00 
                 1.00 
                 1.00 
               
               
                  8.  
                 Emulsified water-based resin* 
                 20.00-55.00 
                 31.50 
                 38.00 
               
               
                  9.  
                 Phosphated salt 
                 0.01-0.50 
                 0.05 
                 0.05 
               
               
                 10.  
                 Poly-acrylic salt 
                 0.01-2.00 
                 0.05 
                 0.05 
               
               
                 11.  
                 37% Formaldehyde solution 
                 0.10-0.80 
                 0.20 
                 0.20 
               
               
                 12.  
                 28% Ammonium Hydroxide 
                 0.10-0.80 
                 0.40 
                 0.40 
               
               
                   
                 solution 
                   
                   
                   
               
               
                 13. 
                 Glycolic solvent 
                 0.00-5.00 
                 1.10 
                 1.00 
               
               
                 14.  
                 Penthane diol solvent 
                 0.00-3.00 
                 1.10 
                 1.00 
               
             
          
           
               
                 Total Percent 
                   
                 100 
                 100 
               
               
                   
               
               
                 *The emulsified water-based resin can be of a pure acrylic and/or styrene-containing acrylic type, as well as any other elastomeric resin used in waterproof formulations. 
               
             
          
         
       
     
         [0024]    Additionally said composition can include red and/yellow iron dioxide to provide the waterproof composition with a red terra cotta color. In a quantity from 0.00 to 5.00 weight % and 3.20 weight % Mega quality waterproof composition and finally 3.20 weight % Ultra quality waterproof composition. 
         [0025]    The elastic fiber as a mechanical reinforcement is selected from elastane fibers, gum fibers (rubber band-like), neoprene fiber, natural rubber or synthetic rubber fiber, as well as other natural elastic fibers and synthetic elastic fibers; where elastic fibers are those that can be stretched without any breakage and when released they recover its initial state, but can show some fatigue without recovering its original length. 
         [0026]    The waterproof composition comprises the physical and chemical properties as shown in the following table for both the ULTRA and MEGA waterproof composition qualities: 
         [0000]    
       
         
               
               
               
               
             
           
               
                   
               
               
                 Physical and 
                   
                   
                   
               
               
                 Chemical 
                   
                   
                   
               
               
                 Properties 
                 ASTM 
                 “IMPAC ULTRA” 
                 “IMPAC MEGA” 
               
               
                   
               
             
             
               
                 Density 
                 ASTM D-1475 
                 1.32 +/− 0.05 
                 1.32 +/− 0.05 
               
               
                 Viscosity 
                 ASTM D-2196 
                 60,000-65,000 cps 
                 60,000-65,000 cps 
               
               
                 pH 
                 ASTM E-70 
                 9-10 
                 9-10 
               
               
                 Solids 
                 ASTM D-1644 
                 53% +/− 2 
                 52% +/− 2 
               
               
                 Elongation 
                 ASTM D-2370 
                 200% to 430% 
                 200% to 550% 
               
               
                 Stability 
                 ASTM D-1849 
                 Passes 52° C.  
                 Passes 52° C.  
               
               
                   
                   
                 Stability 
                 Stability 
               
               
                   
               
             
          
         
       
     
         [0027]    The elastomeric acrylic used in said waterproof composition consists of a resin-in-emulsion comprising acrylic monomers, having the following physical and chemical properties: 
         [0000]    
       
         
               
               
               
               
             
           
               
                   
                   
               
               
                   
                 Pysical and Chemical 
                   
                   
               
               
                   
                 Properties 
                 ASTM 
                 Emulsified Resin** 
               
               
                   
                   
               
             
             
               
                   
                 Density 
                 ASTM D-1475 
                 1.00 +/− 0.05 
               
               
                   
                 Viscosity 
                 ASTM D-2196 
                 1,000-25,000 CPS 
               
               
                   
                 pH 
                 ASTM E-70 
                 3-10 
               
               
                   
                 Solids 
                 ASTM D-1644 
                 53% +/− 2 
               
               
                   
                 Elongation 
                 ASTM D-2370 
                 Higher than 600% 
               
               
                   
                 Stability 
                 ASTM D-1849 
                 Passes 52° C. Stability 
               
               
                   
                   
               
               
                   
                 **The water-based emulsified resin can be pure acrylic and/or styrene-acrylic, as well as any other elastomeric resin type used for waterproofing formulations. 
               
             
          
         
       
     
         [0028]    The invention has been described in sufficient detail to enable one skilled in the art to reproduce and obtain the results as already disclosed in the present invention. Nevertheless, any person skilled in the field of the art in relation to the present invention can be able to make modification not described in the present application, however, if the subject matter as claimed in the following claims is required in order to apply such modifications on a given structure or in the manufacture process thereof, said structures should fall within the scope of the invention.