OVERVİEW
Polyurethane adhesive putty for marble is a two-component, solvent-free, high-strength bonding compound designed for repairing cracks, filling gaps, and structurally bonding marble, natural stone, engineered stone and other mineral-based construction materials.
It provides excellent adhesion, elasticity, mechanical durability, chemical resistance, and strong long-term stability.
Meaning & Definition
Polyurethane adhesive putty for marble refers to a reactive polyurethane polymer system (Part A resin + Part B hardener) that forms a dense, tough, stone-like structure after curing.
It fills cracks, restores broken stone pieces, and ensures long-lasting bonding.
Description
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Solvent-free
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Two-component
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Thixotropic paste
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High gap-filling ability
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Excellent adhesion to all marble, granite, terrazzo and artificial stones
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Fast curing and easy application
Preparation / Making Procedure
1. Component A – Polyurethane Resin Paste
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Polyurethane prepolymer
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Reactive fillers (calcium carbonate, dolomite)
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Thixotropic agents
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Plasticizers
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Additives (adhesion promoters, wetting agents)
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Pigments (optional)
2. Component B – Hardener
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Polymeric MDI or modified isocyanate
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Accelerators
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Stabilizers
Production Steps
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Disperse fillers into polyurethane prepolymer at low–medium speed.
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Add thixotropic agents to form a smooth, paste-like structure.
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Adjust viscosity with plasticizers.
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Add pigments and homogenize.
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Prepare the hardener (Part B) separately under moisture-free conditions.
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Package Part A and Part B in moisture-resistant containers.
Formulation
(Exact percentages intentionally omitted)
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Component A (Resin Paste)
Polyurethane prepolymer
Stone fillers
Plasticizer
Thixotropic agent
Additives -
Component B (Hardener)
Polymeric isocyanate
Accelerator
Moisture scavenger
Properties
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High mechanical strength
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Excellent adhesion to marble
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Good elasticity to absorb stress
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Chemical and water resistance
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UV and aging stability
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Non-sag paste consistency
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Fast curing at room temperature
Applications
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Marble bonding & fixing
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Repairing broken marble pieces
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Filling cracks and gaps
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Structural bonding in stone restoration
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Bonding granite, terrazzo, artificial stones
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Industrial flooring & construction repairs
Usage
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Clean the marble surface.
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Mix Component A + Component B in the recommended ratio.
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Apply the adhesive putty to crack or bonding area.
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Press the surfaces firmly.
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Allow curing (initial: 1–2 hours, full cure: 24 hours).
Advantages
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Solvent-free, low VOC
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Very strong bonding
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Long-term durability
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Excellent filling capability
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Resistant to chemicals and moisture
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Suitable for indoor & outdoor use
Summary
Polyurethane adhesive putty for marble is a strong, durable, solvent-free two-component bonding system formulated for repairing, bonding, and restoring marble and natural stones. Its thixotropic paste structure makes it ideal for filling cracks and achieving high-performance structural adhesion.
