Acrylic Sealant & Adhesive is a versatile water-based product designed to provide both bonding and joint-sealing properties. It can be used for general repair, gap filling, crack sealing and bonding applications on materials such as wood, ceramic, tiles, aluminium and PVC.
This guide explains a practical 1 KG acrylic sealant and adhesive formulation, the function of each raw material, manufacturing process, quality control, applications and storage requirements.
What Is Acrylic Sealant & Adhesive?
Acrylic Sealant & Adhesive is a water-based formulation in which acrylic emulsion acts as the primary binder. After application, water gradually evaporates and the acrylic binder forms a continuous film.
The resulting material can adhere to suitable surfaces while filling small gaps and joints.
Unlike a simple adhesive, a sealant also needs to maintain sufficient body and flexibility after drying so that it can remain in the joint rather than flowing away.
How Does It Work?
The formulation works through several components:
Acrylic Emulsion forms the primary polymer film and provides adhesion.
Calcium Carbonate gives the product body, filling capacity and paste consistency.
Plasticizer helps improve flexibility and reduces excessive brittleness.
HEC/HPMC controls viscosity and helps create a suitable application consistency.
Titanium Dioxide provides whiteness and opacity.
The remaining additives help with dispersion, foam control, preservation, workability and pH stability.
1 KG Acrylic Sealant & Adhesive Formula
Raw Materials
High-Solids Acrylic Emulsion — 450 g
Main binder responsible for film formation and adhesion.
Fine Calcium Carbonate — 350 g
Provides body, filling properties and contributes to the required paste consistency.
Titanium Dioxide — 20 g
Provides whiteness and opacity.
Plasticizer — 30 g
Improves flexibility and helps reduce brittleness after drying.
Alphox 200 — 15 g
Assists wetting and formulation uniformity.
Propylene Glycol — 20 g
Improves workability and helps control moisture loss during application.
Defoamer — 3 g
Controls foam generated during mixing and processing.
Dispersing Agent — 5 g
Helps disperse Titanium Dioxide and Calcium Carbonate uniformly.
Preservative — 2 g
Protects the water-based formulation against microbial spoilage.
HEC/HPMC Thickener — 5 g
Controls viscosity and provides the required paste-like consistency.
Ammonia / AMP-95 — 2 g
Used for pH adjustment.
Water — 98 g
Processing medium and viscosity adjustment component.
Total Batch Size: 1,000 g
Function of Each Raw Material
1. Acrylic Emulsion
This is the most important component of the formulation.
It acts as the polymer binder and forms the final film after water evaporation. The grade and solids content of the acrylic emulsion have a major effect on adhesion, flexibility, water resistance and overall performance.
2. Calcium Carbonate
Calcium Carbonate is the primary mineral filler.
It increases body and reduces the amount of expensive polymer required. Fine particle size is preferable when a smooth finished product is required.
3. Titanium Dioxide
Titanium Dioxide provides a clean white appearance and opacity.
It is particularly useful when the finished sealant is intended to be white and paintable.
4. Plasticizer
The plasticizer improves flexibility and helps reduce cracking or brittleness of the dried film.
The exact type and dosage should be selected according to compatibility with the acrylic binder.
5. Alphox 200
Alphox 200 can assist wetting and improve the uniformity of the formulation.
It should be added gradually because excessive surfactant can negatively affect water resistance or surface properties.
6. Propylene Glycol
Propylene Glycol acts as a processing aid and humectant. It can improve workability and help slow excessive moisture loss during application.
7. Defoamer
Foam can create problems during high-speed mixing, filling and application.
A suitable defoamer helps maintain a smooth and homogeneous product.
8. Dispersing Agent
The dispersing agent helps keep Titanium Dioxide and Calcium Carbonate uniformly distributed throughout the formulation.
9. Preservative
Because this is a water-based product, an appropriate preservative is required to protect the formulation during storage.
The preservative should always be used according to the supplier’s recommended dosage and regulatory requirements.
10. HEC/HPMC
HEC or HPMC provides viscosity control.
It helps produce the thick, non-running consistency required for a sealant.
11. Ammonia / AMP-95
This component is primarily used for pH adjustment.
The final pH should be checked rather than relying only on the calculated quantity.
12. Water
Water acts as the main processing medium.
The final quantity can require minor adjustment depending on the solids content of the acrylic emulsion, filler moisture and desired viscosity.
Manufacturing Process
Step 1 – Prepare the Water Phase
Add the required water to a clean mixing vessel.
Start slow-to-medium agitation.
Add the dispersing agent, preservative and defoamer.
Mix until properly distributed.
Step 2 – Disperse Titanium Dioxide
Add Titanium Dioxide gradually while mixing.
Continue mixing until there are no visible lumps and the pigment is properly dispersed.
Step 3 – Add Calcium Carbonate
Add fine Calcium Carbonate gradually.
Do not dump the complete quantity at once.
Allow each portion to become properly incorporated before adding the next portion.
Continue mixing until a smooth, uniform paste is obtained.
Step 4 – Add Acrylic Emulsion
Reduce the mixing speed.
Add the Acrylic Emulsion slowly to avoid excessive foam and air entrapment.
Mix until the binder is completely incorporated.
Step 5 – Add Performance Additives
Add:
- Alphox 200
- Plasticizer
- Propylene Glycol
Mix gently until homogeneous.
Step 6 – Add Thickener
Prepare HEC/HPMC according to the selected grade’s recommended hydration procedure.
Add it gradually to the batch.
Allow sufficient time for the thickener to develop the required viscosity.
Step 7 – pH Adjustment
Check the batch pH.
Adjust gradually using Ammonia or AMP-95.
A practical target is approximately pH 7.5–8.5, subject to the acrylic emulsion supplier’s specification.
Step 8 – Final Mixing
Continue slow mixing until the product becomes:
- Smooth
- Uniform
- Lump-free
- Properly thickened
- Free from excessive foam
Allow the batch to stand or deaerate before filling if necessary.
Finished Product Specifications
Typical target properties can include:
Appearance: Smooth white paste
Odour: Mild characteristic odour
pH: Approximately 7.5–8.5
Consistency: Thick, smooth, non-running paste
Application: Cartridge, tube or suitable dispensing pack
Actual specifications should be established through laboratory testing and adjusted according to the selected raw materials.
Applications
Acrylic Sealant & Adhesive can be considered for applications such as:
- Wood bonding
- Ceramic bonding
- Tile joints
- Aluminium joints
- PVC applications
- Door and window joints
- Small gaps
- General repair work
- Interior crack filling
- Decorative sealing
- General maintenance applications
Always perform an adhesion test on the actual substrate before commercial use.
Advantages
A properly formulated acrylic sealant can offer:
Good Adhesion
The acrylic binder provides bonding to many common building and household substrates.
Easy Application
The paste-like consistency makes it suitable for manual application.
Paintability
Acrylic sealants are generally suitable for painting after adequate drying, subject to compatibility testing.
Smooth Finish
Fine filler and proper dispersion can produce a smooth finished surface.
Easy Cleanup
Water-based formulations are generally easier to clean during the wet stage than solvent-based systems.
Versatile Use
The same basic technology can be adapted for different grades and applications.
Important Formulation Considerations
The exact performance of the product depends heavily on the quality and specification of the acrylic emulsion.
Acrylic emulsions with different solids content, particle size, glass-transition temperature and compatibility characteristics can produce significantly different results.
Calcium Carbonate particle size also affects:
- Smoothness
- Viscosity
- Extrusion
- Surface finish
- Filling properties
Therefore, laboratory trials should be conducted before fixing the final commercial formulation.
Quality Control Tests
Before commercial production, test the finished product for:
Appearance
Check for lumps, separation, excessive foam or phase instability.
pH
Measure with a calibrated pH meter.
Viscosity
Check whether the product can be easily dispensed while remaining in the joint after application.
Adhesion
Test on the intended substrates.
Drying
Check surface drying and complete drying time under controlled conditions.
Flexibility
Check whether the dried film cracks when subjected to normal movement.
Water Resistance
Evaluate the dried product after exposure to water according to the intended application.
Shrinkage
Check dimensional change after drying, particularly when the product is intended for gap filling.
Storage Stability
Observe the product after accelerated and normal storage testing.
Packaging
The finished product can be packed in:
- Plastic cartridges
- Squeeze tubes
- Plastic tubs
- Suitable airtight containers
Packaging should protect the product from contamination and excessive evaporation.
Storage
Store the finished product in a tightly closed container in a cool, dry place.
Avoid freezing and excessive heat.
Keep containers protected from direct sunlight.
Always follow the storage recommendations of the raw-material suppliers.
Safety Precautions
Use appropriate PPE during manufacturing, including gloves and eye protection.
Ensure adequate ventilation in the production area.
Avoid direct contact with eyes and prolonged skin contact.
Follow the Safety Data Sheet (SDS) of every raw material used.
Do not use the product for structural applications unless it has been specifically formulated, tested and certified for that purpose.
Frequently Asked Questions
Is this product an adhesive or a sealant?
It is designed as a combination acrylic adhesive and sealant, providing both bonding and gap/joint filling properties.
Is acrylic sealant waterproof?
A properly formulated acrylic sealant can provide useful water resistance after drying, but the actual water resistance depends on the acrylic binder, filler loading, additives and curing conditions.
Can it be painted?
Acrylic sealants are generally suitable for painting, but compatibility should be tested with the specific paint system.
Can it be used on metal?
It can be considered for suitable metal substrates such as aluminium, provided the surface is properly cleaned and adhesion is verified.
Can it be used on PVC?
Yes, it can be considered for PVC applications, but adhesion testing is recommended because different PVC grades and surface conditions can behave differently.
Why is Calcium Carbonate used in the formulation?
It provides body, filling capacity and helps achieve the desired consistency while reducing formulation cost.
Why is HEC/HPMC added?
It controls viscosity and helps create a stable, non-running sealant consistency.
Can this formulation be modified?
Yes. The acrylic emulsion, filler level, thickener and plasticizer can be adjusted according to the desired adhesion, flexibility, viscosity, drying and cost targets.
Conclusion
Acrylic Sealant & Adhesive is a useful water-based formulation for general bonding and sealing applications. The combination of acrylic emulsion, mineral filler, plasticizer, thickener and performance additives provides a practical starting point for developing a commercial product.
However, the formula should be treated as a development formulation rather than a guaranteed final commercial specification. Raw-material grades vary between suppliers, so laboratory testing and application-specific optimization are essential before large-scale production.
Recommended starting batch: 1 KG laboratory trial
Technology: Water-Based Acrylic
Product Type: Adhesive + Sealant
Main Binder: Acrylic Emulsion
