{"id":15182,"date":"2026-08-05T02:56:07","date_gmt":"2026-08-05T02:56:07","guid":{"rendered":"https:\/\/tenessy.com\/?p=15182"},"modified":"2026-08-05T03:05:18","modified_gmt":"2026-08-05T03:05:18","slug":"%d1%87%d1%82%d0%be-%d1%82%d0%b0%d0%ba%d0%be%d0%b5-%d0%bf%d0%be%d0%b2%d1%82%d0%be%d1%80%d0%bd%d0%be-%d0%b4%d0%b8%d1%81%d0%bf%d0%b5%d1%80%d0%b3%d0%b8%d1%80%d1%83%d0%b5%d0%bc%d1%8b%d0%b9-%d0%bf%d0%be","status":"publish","type":"post","link":"https:\/\/tenessy.com\/ru\/%d1%87%d1%82%d0%be-%d1%82%d0%b0%d0%ba%d0%be%d0%b5-%d0%bf%d0%be%d0%b2%d1%82%d0%be%d1%80%d0%bd%d0%be-%d0%b4%d0%b8%d1%81%d0%bf%d0%b5%d1%80%d0%b3%d0%b8%d1%80%d1%83%d0%b5%d0%bc%d1%8b%d0%b9-%d0%bf%d0%be\/","title":{"rendered":"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u043e \u0434\u0438\u0441\u043f\u0435\u0440\u0433\u0438\u0440\u0443\u0435\u043c\u044b\u0439 \u043f\u043e\u043b\u0438\u043c\u0435\u0440\u043d\u044b\u0439 \u043f\u043e\u0440\u043e\u0448\u043e\u043a? \u041f\u043e\u043b\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e"},"content":{"rendered":"\t\t
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Redispersible Polymer Powder (RDP) is a free-flowing white powder produced by spray-drying a polymer emulsion (typically VAE \u2014 vinyl acetate-ethylene copolymer) with protective colloids and additives. When mixed with water, RDP redisperses into a polymer emulsion that improves adhesion, flexibility, crack resistance, and water repellency in cement-based and gypsum-based building materials.<\/strong><\/p>

TENESSY manufactures five RDP grades \u2014 RDP-5580<\/a>, RDP-5575, RDP-5560<\/a>, RDP-5518<\/a>, and RDP-5516<\/a> \u2014 each engineered for specific construction mortar applications.<\/p>

How RDP Is Made<\/h3>

The production of redispersible polymer powder involves several key steps:<\/p>

  1. Emulsion polymerization<\/strong>: Vinyl acetate and ethylene monomers are polymerized in water with emulsifiers and initiators to create a stable polymer emulsion (latex)<\/li><\/ol>
    1. Addition of protective colloids<\/strong>: Polyvinyl alcohol (PVA) or other protective colloids are added to stabilize the emulsion and enable redispersion<\/li><\/ol>
      1. Spray drying<\/strong>: The liquid emulsion is sprayed into a hot-air chamber, evaporating the water and leaving dry polymer powder particles<\/li><\/ol>
        1. Addition of anti-caking agents<\/strong>: Fine mineral powders (such as silica or calcium carbonate) are added to prevent the powder from clumping during storage<\/li><\/ol>
          1. Sieving and packaging<\/strong>: The finished powder is sieved to uniform particle size and packaged in moisture-resistant bags<\/li><\/ol>

            TENESSY RDP Technical Specifications<\/h3>

            Parameter<\/p><\/td>

            Specification<\/p><\/td><\/tr>

            Appearance<\/p><\/td>

            White powder<\/p><\/td><\/tr>

            Bulk Density<\/p><\/td>

            400\u2013600 g\/l<\/p><\/td><\/tr>

            Particle Size<\/p><\/td>

            \u226580<\/p><\/td><\/tr>

            pH Value<\/p><\/td>

            6.0\u20138.0<\/p><\/td><\/tr>

            Solid Content<\/p><\/td>

            \u226598%<\/p><\/td><\/tr><\/tbody><\/table>

            TENESSY RDP Grade Guide<\/h3>

            TENESSY offers five RDP grades, each designed for specific application requirements:<\/p>

            Grade<\/p><\/td>

            Designated Applications<\/p><\/td><\/tr>

            RDP-5580<\/a><\/p><\/td>

            Plastering\/anti-crack mortar, wall panels, surface decoration mortar<\/p><\/td><\/tr>

            RDP-5575<\/p><\/td>

            Contact TENESSY for application details<\/p><\/td><\/tr>

            RDP-5560<\/a><\/p><\/td>

            Bonding mortar, interior\/exterior wall putty powder, ceramic tile adhesive, wall panels, cement-based mortars<\/p><\/td><\/tr>

            RDP-5518<\/a><\/p><\/td>

            Bonding mortar, interior\/exterior wall putty powder, tile adhesive, repair mortar, sealant, self-leveling mortar<\/p><\/td><\/tr>

            RDP-5516<\/a><\/p><\/td>

            Bonding mortar, interior\/exterior wall putty powder, ceramic tile adhesive, wall panels, cement-based mortars<\/p><\/td><\/tr><\/tbody><\/table>

            Grade selection guidance<\/strong>:<\/p>

            • For anti-crack and plastering mortar<\/strong> \u2192 RDP-5580<\/li><\/ul>
              • For tile adhesive and general bonding mortar<\/strong> \u2192 RDP-5560 or RDP-5516<\/li><\/ul>
                • For repair mortar, sealant, and self-leveling<\/strong> \u2192 RDP-5518 (the most versatile grade)<\/li><\/ul>
                  • For wall putty powder<\/strong> \u2192 RDP-5560, RDP-5518, or RDP-5516<\/li><\/ul>

                    \"mortar<\/h3>

                    How RDP Works in Mortar<\/h3>

                    When RDP is added to a dry-mix mortar formulation and mixed with water on-site, two critical processes occur:<\/p>

                    Film Formation<\/h4>

                    The polymer particles in RDP coalesce into a continuous, flexible polymer film throughout the mortar matrix. This film interweaves with the cement hydrate structure, creating a polymer-modified composite with enhanced properties:<\/p>

                    • Improved adhesion<\/strong>: The polymer film bonds to both the substrate and the cement matrix, dramatically increasing bond strength<\/li><\/ul>
                      • Increased flexibility<\/strong>: The flexible polymer phase allows the mortar to accommodate minor substrate movement and thermal expansion without cracking<\/li><\/ul>
                        • Reduced brittleness<\/strong>: Polymer modification converts brittle cement mortar into a more resilient, impact-resistant material<\/li><\/ul>

                          Water Retention and Workability<\/h4>

                          RDP, like cellulose ether, contributes to water retention in the fresh mortar. This ensures proper cement hydration and extends open time \u2014 the period during which tiles can be adjusted after placement.<\/p>

                          Key Properties RDP Improves in Mortar<\/h3>

                          Property<\/p><\/td>

                          Without RDP<\/p><\/td>

                          With RDP (1\u20133%)<\/p><\/td>

                          Improvement<\/p><\/td><\/tr>

                          Adhesive bond strength<\/p><\/td>

                          0.3\u20130.5 MPa<\/p><\/td>

                          1.0\u20132.0 MPa<\/p><\/td>

                          +200\u2013300%<\/p><\/td><\/tr>

                          Flexibility (deformation)<\/p><\/td>

                          Low (brittle)<\/p><\/td>

                          High (flexible)<\/p><\/td>

                          Significant<\/p><\/td><\/tr>

                          Crack resistance<\/p><\/td>

                          Poor<\/p><\/td>

                          Good\u2013Excellent<\/p><\/td>

                          Major<\/p><\/td><\/tr>

                          Impact resistance<\/p><\/td>

                          Low<\/p><\/td>

                          Medium\u2013High<\/p><\/td>

                          Significant<\/p><\/td><\/tr>

                          Water repellency<\/p><\/td>

                          Low<\/p><\/td>

                          Medium\u2013High<\/p><\/td>

                          Moderate<\/p><\/td><\/tr>

                          Open time<\/p><\/td>

                          10\u201315 min<\/p><\/td>

                          20\u201330 min<\/p><\/td>

                          +50\u2013100%<\/p><\/td><\/tr>

                          Workability<\/p><\/td>

                          Fair<\/p><\/td>

                          Good\u2013Excellent<\/p><\/td>

                          Significant<\/p><\/td><\/tr><\/tbody><\/table>

                          RDP Dosage Guide by Application<\/h3>

                          Application<\/p><\/td>

                          Recommended TENESSY Grade<\/p><\/td>

                          Typical RDP Dosage<\/p><\/td>

                          Primary Benefit<\/p><\/td><\/tr>

                          Standard tile adhesive (C1)<\/p><\/td>

                          RDP-5560 or RDP-5516<\/p><\/td>

                          1.0\u20132.0%<\/p><\/td>

                          Adhesion, open time<\/p><\/td><\/tr>

                          Premium tile adhesive (C2)<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          2.0\u20134.0%<\/p><\/td>

                          High adhesion, flexibility<\/p><\/td><\/tr>

                          Large-format tile adhesive<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          3.0\u20135.0%<\/p><\/td>

                          Sag resistance, adhesion<\/p><\/td><\/tr>

                          Self-leveling compound<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          2.0\u20134.0%<\/p><\/td>

                          Flow, crack resistance<\/p><\/td><\/tr>

                          ETICS adhesive & base coat<\/p><\/td>

                          RDP-5580<\/p><\/td>

                          3.0\u20135.0%<\/p><\/td>

                          Adhesion, impact, crack<\/p><\/td><\/tr>

                          Waterproofing membrane<\/p><\/td>

                          RDP-5580<\/p><\/td>

                          5.0\u201310.0%<\/p><\/td>

                          Flexibility, waterproofing<\/p><\/td><\/tr>

                          Repair mortar<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          2.0\u20135.0%<\/p><\/td>

                          Bond, shrinkage, impact<\/p><\/td><\/tr>

                          Plastering\/anti-crack mortar<\/p><\/td>

                          RDP-5580<\/p><\/td>

                          2.0\u20134.0%<\/p><\/td>

                          Crack resistance, flexibility<\/p><\/td><\/tr>

                          Skim coat \/ finishing<\/p><\/td>

                          RDP-5560 or RDP-5516<\/p><\/td>

                          1.0\u20132.0%<\/p><\/td>

                          Adhesion, smoothness<\/p><\/td><\/tr>

                          Wall putty powder<\/p><\/td>

                          RDP-5560, RDP-5518, or RDP-5516<\/p><\/td>

                          1.0\u20133.0%<\/p><\/td>

                          Adhesion, workability<\/p><\/td><\/tr>

                          Gypsum joint filler<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          1.0\u20133.0%<\/p><\/td>

                          Flexibility, crack resistance<\/p><\/td><\/tr>

                          Sealant<\/p><\/td>

                          RDP-5518<\/p><\/td>

                          2.0\u20134.0%<\/p><\/td>

                          Flexibility, adhesion<\/p><\/td><\/tr><\/tbody><\/table>

                          Note<\/strong>: Dosage is expressed as percentage of total dry mix weight. Over-dosage (>10%) can reduce compressive strength and increase cost without proportional benefit.<\/p>

                          RDP vs Cellulose Ether: Complementary, Not Competing<\/h3>

                          A common question is whether RDP replaces cellulose ether in mortar formulations. The answer is no \u2014 they serve different but complementary functions:<\/p>

                          Function<\/p><\/td>

                          RDP<\/p><\/td>

                          Cellulose Ether (HPMC\/HEMC)<\/p><\/td><\/tr>

                          Adhesion improvement<\/p><\/td>

                          \u2705 Primary<\/p><\/td>

                          Minimal<\/p><\/td><\/tr>

                          Flexibility \/ crack resistance<\/p><\/td>

                          \u2705 Primary<\/p><\/td>

                          Minimal<\/p><\/td><\/tr>

                          Water retention<\/p><\/td>

                          Moderate<\/p><\/td>

                          \u2705 Primary<\/p><\/td><\/tr>

                          Thickening \/ anti-sag<\/p><\/td>

                          Moderate<\/p><\/td>

                          \u2705 Primary<\/p><\/td><\/tr>

                          Workability improvement<\/p><\/td>

                          \u2705 Significant<\/p><\/td>

                          \u2705 Significant<\/p><\/td><\/tr>

                          Cost<\/p><\/td>

                          High (expensive)<\/p><\/td>

                          Lower<\/p><\/td><\/tr><\/tbody><\/table>

                          Best practice<\/strong>: Use both RDP and cellulose ether together. RDP provides adhesion and flexibility; cellulose ether provides water retention and thickening. A typical tile adhesive formulation contains 0.3\u20130.5% HPMC (such as TENESSY NH200PC) + 1\u20133% RDP (such as RDP-5560).<\/p>

                          RDP in Tile Adhesive: Why It’s Essential<\/h3>

                          Tile adhesive is the largest application for RDP. Modern tile adhesives must meet stringent standards (EN 12004, ISO 13007) that require:<\/p>

                          • High bond strength<\/strong> under both dry and wet conditions<\/li><\/ul>
                            • Flexibility<\/strong> to accommodate thermal expansion and substrate movement<\/li><\/ul>
                              • Long open time<\/strong> for large-area tile installation<\/li><\/ul>
                                • Non-slip (anti-sag)<\/strong> properties for wall tile installation<\/li><\/ul>

                                  RDP is the additive that makes these properties achievable. Without RDP, cement-based tile adhesive would be brittle, poorly bonded, and unsuitable for demanding applications like exterior tiling, large-format porcelain, and swimming pool surrounds.<\/p>

                                  Recommended TENESSY grades for tile adhesive<\/strong>: RDP-5560 and RDP-5516 for standard tile adhesive; RDP-5518 for premium tile adhesive requiring repair and self-leveling capabilities.<\/p>

                                  Quality Considerations When Choosing RDP<\/h3>

                                  Quality Factor<\/p><\/td>

                                  TENESSY Specification<\/p><\/td>

                                  Why It Matters<\/p><\/td><\/tr>

                                  Solid content<\/p><\/td>

                                  \u2265 98%<\/p><\/td>

                                  Lower = more water = shorter shelf life<\/p><\/td><\/tr>

                                  Bulk density<\/p><\/td>

                                  400\u2013600 g\/l<\/p><\/td>

                                  Affects dosing accuracy<\/p><\/td><\/tr>

                                  Particle size<\/p><\/td>

                                  \u226580<\/p><\/td>

                                  Affects redispersion speed<\/p><\/td><\/tr>

                                  pH<\/p><\/td>

                                  6.0\u20138.0<\/p><\/td>

                                  Compatibility with cement systems<\/p><\/td><\/tr>

                                  Packaging<\/p><\/td>

                                  Moisture-resistant bags<\/p><\/td>

                                  RDP absorbs moisture \u2014 must stay dry<\/p><\/td><\/tr><\/tbody><\/table>

                                  Storage and Handling<\/h3>

                                  RDP is hygroscopic (absorbs moisture from air) and must be stored properly:<\/p>

                                  • Store in original sealed bags in dry, cool, well-ventilated conditions<\/li><\/ul>
                                    • Protect from rain during transportation<\/li><\/ul>
                                      • Avoid temperatures above 30\u00b0C<\/li><\/ul>
                                        • Use opened bags as soon as possible; reseal to avoid moisture<\/li><\/ul>
                                          • Stack on pallets, not directly on floor<\/li><\/ul>
                                            • Shelf life: 12 months from production date (unopened)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                              What is the difference between RDP and VAE?<\/h2>\n <\/div>\n
                                              \n VAE (vinyl acetate-ethylene) is the polymer type used in most RDP products. RDP is the dry powder form; VAE emulsion is the liquid form. When you buy RDP, you are buying spray-dried VAE emulsion. All RDP is VAE-based (or closely related copolymer), but not all VAE is RDP \u2014 VAE emulsion is also sold as a liquid additive.\n <\/div>\n <\/div>\n
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                                              Which TENESSY RDP grade should I use for tile adhesive?<\/h2>\n <\/div>\n
                                              \n For standard tile adhesive, use [RDP-5560](\/products\/redispersible-polymer-powder\/rdp-5560\/) or [RDP-5516](\/products\/redispersible-polymer-powder\/rdp-5516\/) \u2014 both are designated for ceramic tile adhesive and bonding mortar. For premium tile adhesive requiring additional repair and self-leveling capabilities, use [RDP-5518](\/products\/redispersible-polymer-powder\/rdp-5518\/), which is the most versatile grade.\n <\/div>\n <\/div>\n
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                                              Which TENESSY RDP grade is best for anti-crack mortar?<\/h2>\n <\/div>\n
                                              \n [RDP-5580](\/products\/redispersible-polymer-powder\/rdp-5580\/) is specifically designated for plastering\/anti-crack mortar, wall panels, and surface decoration mortar. This is the recommended grade for crack-resistant formulations.\n <\/div>\n <\/div>\n
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                                              Can RDP be used in gypsum-based products?<\/h2>\n <\/div>\n
                                              \n Yes. RDP is fully compatible with gypsum-based products and is commonly used in gypsum joint fillers, gypsum plaster, and gypsum-based self-leveling compounds. [RDP-5518](\/products\/redispersible-polymer-powder\/rdp-5518\/) is designated for self-leveling mortar and is suitable for gypsum-based self-leveling applications.\n <\/div>\n <\/div>\n
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                                              Is RDP the same as redispersible latex powder?<\/h2>\n <\/div>\n
                                              \n Yes. \"Redispersible polymer powder,\" \"redispersible latex powder,\" \"RDP,\" and \"RPP\" all refer to the same product category \u2014 spray-dried polymer emulsion powder that redisperses in water.\n <\/div>\n <\/div>\n
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                                              What happens if I use too much RDP?<\/h2>\n <\/div>\n
                                              \n Over-dosage (>10%) increases cost without proportional benefit and may reduce compressive strength of the mortar. The polymer film becomes excessive, weakening the cement matrix. Follow recommended dosage ranges for optimal performance.\n <\/div>\n <\/div>\n