Organoclay Rheology Modifier for Adhesives
(Technical Data Sheet – Adhesive Grade)
CP-720A is a purified and modified organoclay for adhesives, engineered to provide strong thixotropy, anti-settling, and viscosity control across adhesive systems based on polyester resins, vegetable oils, synthetic oils, and other organic binders.
As an organophilic clay for adhesive systems, it offers excellent stability and rheological performance, ideal for high-quality adhesive production.
Physical & Chemical Properties
Property Value
Composition Organic derivative of montmorillonite clay
Appearance Fine powder, light yellow
Moisture (105 °C, 2 hr) ≤ 3.5%
Loss on ignition (1000 °C) 34–36%
Bulk density 0.42 g/cm³
Fineness (<74 μm) ≥ 98%
Key Advantages in Adhesive Systems
High-efficiency rheology modifier for adhesive formulations
Light-colored gel suitable for transparent or light-colored adhesives
Easy dispersion; no pre-gel required
In many adhesive resins, no polar activator is needed
Strong thixotropy development and long-term viscosity stability
Improves anti-sagging and anti-settling performance
Can be used to post-correct viscosity in adhesive manufacturing
Functions as an organoclay thickener for sealants & construction adhesives
Recommended Applications of Organoclay Rheology Modifier for Adhesives & Sealants.
CP-720A is applied as an anti-settling additive for adhesives and a viscosity control additive for adhesive production in:
Pressure-sensitive adhesives (PSA)
Hot-melt adhesives
Sealants & construction adhesives
Polyester resin adhesives
Vegetable-oil-based adhesive binders
High-viscosity industrial adhesives
Structural adhesives needing sag resistance
Organoclay Rheology Modifier for Adhesives
Using Method in Adhesive Formulations
CP-720A can be incorporated directly into most adhesive systems without pre-gel preparation.
Standard Dispersion Procedure
Heat the main adhesive binder to ~60–70 °C (optional but improves efficiency).
Add CP-720A slowly under stirring.
Typical dosage: 1–3%
High-thickening systems: 3–7%
Continue dispersing for 10–20 minutes with proper shear.
If binder polarity is low, add 95/5 acetone/water activator:
20–30% of CP-720A weight
Add remaining components and mix 20–30 minutes for full rheology development.
Deair, filter (if required), and pack.
Organoclay Rheology Modifier for Adhesives & Sealants.
Process Notes
Additional shear = better gel performance & stronger thixotropy
Helps adhesives improve:
heat resistance
anti-flow behavior
storage stability
uniformity in film & bonding strength
Package of Organoclay Rheology Modifier for Adhesives & Sealants.
Kraft paper bag with PE liner / multi-wall paper sack,25 kg or 22.68 kg, or customized packaging for Organoclay Rheology Modifier for Adhesives & Sealants.
Storage
Shelf life: 2 years, store in a cool, dry, ventilated environment, prevent moisture exposure
Safety
Refer to MSDS from Zhejiang Camp-Shinning New Material Co., Ltd.
Notice
Information is believed reliable but does not constitute a warranty. Users should test CP-720A for individual application suitability.
FAQ – Organoclay for Adhesives (CP-720A)
1. What makes CP-720A an effective organoclay for adhesives?
CP-720A provides strong thixotropy, anti-sagging, and viscosity stability, making it ideal as a rheology modifier for adhesive formulations.
2. Can CP-720A be used in different adhesive systems?
Yes. It is widely used in PSA, hot-melt adhesives, construction sealants, polyester adhesives, and vegetable-oil-based systems.
3. Does CP-720A require a polar activator in adhesives?
Most adhesive resins can activate CP-720A directly.
Low-polarity systems may require a small amount of 95/5 acetone/water activator.
4. What is the typical dosage of CP-720A in adhesive formulations?
General adhesive formulations: 1–3%
High-thickness or structural adhesives: 3–7%
5. How does CP-720A improve adhesive performance?
It enhances:
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thixotropy
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anti-settling
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storage stability
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sag resistance
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film uniformity
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heat stability
6. Is CP-720A suitable as an organoclay thickener for sealants?
Yes. It works well in sealants, caulks, and construction adhesives requiring strong rheology control.
7. Can CP-720A help prevent settling of fillers and pigments?
Yes. It is designed as an anti-settling additive for adhesives, keeping fillers suspended for long-term stability.
8. Does CP-720A affect the color of adhesives?
No. Its light-yellow fine powder forms a light-colored, high-clarity gel, suitable for clear or light-color adhesives.
9. Does CP-720A help with viscosity post-adjustment?
Yes. It can be added during the final stage to post-correct viscosity.
10. What storage conditions are recommended?
Store in a dry, cool, ventilated place and keep the package sealed to prevent moisture absorption.
Zhejiang Camp-Shinning New Material Co., Ltd. & Organoclay Rheology Modifier for Adhesives & Sealants.