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Organoclay Bentonit

Organoclay bentonite also named organically modified bentonite clay. Organic bentonite clay is a typically quaternary alkylammonium ions, an organophilic clay surface is generated.

Organoclay applications

Organoclay can be used to paints,coatings,inks and grease lubricanting.Organic bentonite clay is also applied as a component in drilling formulations or as a viscosifier for oil-based drilling mud and fracturing fluids.

Organoclay Bentonite
Organoclay Bentonite

What is organoclay

Organoclay , here mainly means organic bentonite or hectorite organoclay rheological additive is inorganic minerals. After it is modified by quaternary ammonium salt or other organic compound, it become amine treated bentonite clay which can be dispersed in organic solvent.

Due to its perfect thickening,dispersion and rheology in solvent, it is widely used as rheology additive to effect anti-sag and anti-settling in paints and coatings formulations.

organoclay rheological additives CP-series are finished from high quality Na-bentonite and Ca- bentonite with high gelling efficiency, good expending ratio, and high cation exchange rate. … CP series organoclay rheological additive is made of Na-bentonite and Ca-bentonite by special processes purifying and modifying.

First, let ’s introduce how to choose the right organoclay in paints and coatings.

Every factory may have several hectorite organoclay bentonite grades for customers to select. Different source of organoclay plus various ammonium and manufacturing technology give many grades of organoclay rheological additive.

How to choose a proper grade of organoclay bentonite additive for your paint formulation?

We list 5 factors for you to make a correct option.
1. Hectorite organoclay is a thickener bentonite in paint and coating formulation. But too high viscosity or too low viscosity is not good for paint and coatings. So, a grade of organoclay with proper thickening ability is suitable for your paint formulation.

2.To make pre-gel, or add thixotropic agent directly in powder? If your manufacturing procedure includes pre-gel, you can select a conventional grade; but if your producing procedure requires to add organic bentonite clay directly in powder, you should select an easy-dispersing grade.

3.Polar activator. Normally, in low and medium solvents or solvent mixture, polar activator is required for conventional grades of organoclay rheological additive to help dispersing. Even for some easy-dispersing grades of organoclay, a small dosage of polar activator is helpful for rheological additive to optimize best performance

4.Which solvent is used in your formulation? 

Each solvent has solvent polarity, non-polarity, or low polarity,or medium polarity or high polarity. Each grade of organoclay has its suitable polarity range of solvent.

For example, CP-180 and CP-10 are suitable for low polaritysolvent; and CP-27 and CP-27A are suitable for medium to high polarity. Customer may read TDS of organoclay to know its suitable polarity range and then select correct grade for your formulation.

5.Some paints,coatings, like finishing, gloss paint, have very high requirement for particle fineness. In this case, you must choose a grade of organoclay treated organobentonite with high dispersing fineness. Customers can check organoclay’s dispersing particle size and select a grade with enough particle fineness.

Organoclay grease | Lubricating,
Grease with our organoclay bentonite can produce high temperature resistance. it gives improved metal adhesion and bleed resistance. And It effects good working stability and water resistance to the greases. The basic oils grease will determine which types of our organoclay should be selected.

  • Organoclay CP-250A designed especially for using in Grease based on synthetic oils | Mineral oil | Medium,high viscosity lubricating oil.
  • Organoclay CP-40 designed especially for using in Grease based on Diesel Oils.
  • Organobentonite CP-MP is designed especially for using in Grease based on Mineral oil.

Organoclay For Oil Drilling Fluids
For organoclay used in drilling mud. Considering different rheological conditions and depth of a oil drilling well, Oil drilling company may choose different oil for drilling fluid, such as diesel, mineral oil, synthetic oil and crude oil.

Normally, our CP-2S,CP-180,CP-169, CP-EZ and CP982 are recommended for diesel, and CP-250A,CP-01,CP-03,CP-04 and CP992 can be applied  in not only diesel, but also in synthetic oil, mineral oil and crude oil.

* Organoclay CP169 is a economical grade for diesel. Its performance can be enhanced when polar activator in moderation is added. So, especially it is recommended for water-in-oil drilling fluid because small dosage of water can act as polar activator.

*Organophilic clay CP-EZ and CP-982 are self activated grades and can be disperse without polar activator. They are recommended when diesel based drilling fluid contain no water or other external polar activator.
A small amount of water (0.1 0.2% by weight  of total formula) added to mud further speeds the gelation process and optimizes organoclay use

*CP-250A and cp-992 have better temperature stability and gelation efficiency in not only diesel, but also synthetic oil, mineral oil and crude oil. They effect rapid dispersibility and contribute initial viscosity,and require no external polar activator.
Organoclay CP- 250A has better YP value and temperature stability than CP-992.

Composition    Organically modified bentonite clay
Appearance    Off white to tan finely divided powder,
Moisture content (105℃,2hr) ≤3.5%
Specific Gravity 1.7
Bulk density 0.40~0.60g/cm³

Applications for oil drilling mud and fracture fluids :

Application Our Rheological additive CP-982 CP-992 CP-EZ CP-169 CP-150
Diesel Solvent √√ √√ √√ √√ √√
Mineral Oil × √√ × √√
Crude Oil × √√ × √√
Synthetic Oil × √√ × √√

Note: -Not suitable

+ Suitable

++ Recommended

Grades of organophilic clay in oil drilling fluids. CP-250A  /  CP-982  /  CP-992 /CP-169 / CP-EZ / CP-150

Organoclay as  a wet process improved viscosifier and gelling additive.As an organoclay bentonite,it has good performance efficiency in diesel,mineral oil and synthetic Oil.

Organoclay’s advantage are very widely.Effectively suspends weighting materials and other solids , Maintains suspension over a wide temperature range ,Eliminates need for chemical activators,Is easy to disperse and rapid yielding and suspends weighting materials and other solids

 Ink applications
 Organoclay is incorporated into ink formulations, it provides reproducible rheology characteristics, following benefits, pigment settling resistance, improved dot gain, controlled tack, controlled misting and increased yield value.

Our organoclay can be used in a broad range of ink systems and has been proven especially effective additives for lithographic and many gravure inks.

Our organic bentonite clay could use for UV Inks ,Inks(Nitro), Screen printing ink, Offset Inks.

Hectorite Organoclay

 Organoclay Rheology Additive For Water Borne Paint

Water Based Organoclay with good properties of thixotropy and perfect thickening ability,it can be widely applied to water based coatings,emulsion paint,toothpaste,construction mortar,cosmetic,putty etc.

CP series water-borne rheological additive is a kind of natural silicate which main ingredient is hydrophilic and high purified montmorillonite. 

A, Specification

Gradesspec Composition Appearance Moisturecontent,%,


Fineness200mesh %
CR-DRI Refined bentonite Fine powder, off white 10  95
CR-OC Refined bentonite Fine powder, off white 10  95
CR-OCA Refined bentonite Fine powder, off white 10  95
CR-EWB Refined and beneficiated bentonite Fine powder, off white 10  95
CR-EW Refined and modified bentonite Fine powder, off white 10  95
CR-EWS Refined and modified bentonite Fine powder, off white 10  95

B  Applications of Organoclay Rheological additive

Our CP series water-borne rheological additive is a kind of natural silicate which main ingredient is hydrophilic and high purified montmorillonite. For its good properties of thixotropy and perfect thickening ability, it can be widely applied to water based coatings, emulsion paint, toothpaste,construction mortar, cosmetic, putty etc.

Some grades can also be used to replace HEC, CMC and reduce the cost. Please find the typical applications as follows:

Emulsion paint ++ ++ ++
Plaster ++ ++ +
Water-based paints ++ ++ ++
Agriculture ++ ++ +
Tooth paste
Pigments + + ++ ++ ++
Water-based mud ++ ++ ++
Foundry application
Paper industry + +
Ceramics and enamel + +      +
Cleaning agent + +      –
Construction mortal

Note: -Not suitable

+ Suitable

++ Recommended

C, Incorporation

Incorporation procedure for Water-borne grades

Water-borne Rheological Additive neither need to produce pre-gel nor add polar

activator, the addition process is as follows


  1. Slowly add water-borne organoclay bentonite,disperse in high speed for 20-30minutes
  2. Additive(film forming additive, deformer, fungicide, dispersant, etc.)
  3. Pigment
  4. Latex
  5. Dilute

Organoclay easy dispersing grades

Organoclay manufacturers 

Zhejiang Camp Shinning New Material Co.Ltd

Organoclay price

We offer competitive price, because we have our own bentonite raw ore, which can greatly save the cost of production.

organoclay rheological additive is a treated armin bentonite. Hectorite organoclay include easy dispersing grades and pre-gel grades.

Incorporation for easy dispersing grades

Organoclays are easy dispersing grades which can be added directly inpowder.
CP-10  CP-EZ CP-MP10
SG-58A  CP-250 CP-250A

  Pre-gel procedure and polar activator can be eliminated

Incorporation Procedure for easy dispersing grades:

  1. Charge solvent or solvent mixture)to mill
  2. Slowly addOrganoclay(0. 2%-2% in weight) to mill under agitation
  3. Mix at high speed for 5 minutes
  4. Add polar activator
  5. Mix at high speed for 5 minutes

Incorporation procedure for pre-gel grades

Organoclays are pre-gel grades for which polar activator and pre-gel are necessary
CP-40 CP-34 CP-120
CP-GL CP-27 CP-27A
Organoclay Bentonite
Organoclay Bentonite

Procedure of making gel:

(1)Charge 85-87% solvent (or solvent mixture)to mill

(2)Slowly add organoclay (6-10% by weight of total pregel) to mill under agitation

(3mixat high speed for 5 minutes

(4),Add polar actnvator 3-5%

(5),Mix at high speed for 5 minutes

Addition of pre-gel

A For poor wetting capacity resin system (epoxy, polyester, short-oil alkyd, acrylic resin, etc.) and non-thixotropic grind materials, use in combination with surfactant, the addition process is as follows:

a . Charge resin and solvents(mix)

b. Wetting ( if required

c. Pigment

d Disperse to desired fineness with grinding

e Rheological additive pre-gel

Disperse completely to desired fineness

g,Dilute to desired viscosity

B For poor wetting resin system, use surfactant and can develop thixotropy structure under shear . the addition process is as follows

a Charge resin and solvents(mix)

b Rheological additive pre-gel

c Surfactant

d Pigment

Dilute to desired viscosity

Organoclay Bentonite
Organoclay Bentonite

Below listed polar activators are recommended in organoclay.

  • Methanol/water(95/5)
  • Ethanol/water(95/5)
  • Propylene carbonate/water(95/5)
  • Propylene carbonate
  • Acetone/water(95/5)
  • Glycol ether

Dispersion and activation of organoclay:

Important note:

  • Suitable dosage of polar activator is very important to dispersion of organoclay and stabilit
  • Polar activator should be added only after addition of organoclay, and organoclay has been fully wetted and dispersed
  • For poor wetting resin systems(epoxy, polyester, short-oil alkyd, acrylic resin, etc.) organoclay should be used in combination with surfactant
  • system. Too much polar activator will reduce swelling once again and viscosity would drop down again. See following chart 1
  • Typical viscosity curve of a system with organoclay. See following chart 2
rheological additive activator

Package and storage:

The package: Kraft bag or kraft complex interior with PE or customized

Packing size: 25kg/bag or 500kg/bag or customized. Products should be stored in ventilated cool and dry place.

Storage life:  Two years


Organoclay supplier Zhejiang Camp-Shinning New Material Co.Ltd is a professional supplier in the field of bentonite.The organoclay price is very competive.Because we have own bentonite mine.

Pls contact us now, we will mail you organclay MSDS  .

[email protected]

Cel(whatsapp): 86-13185071071

Organoclay supplier :    Zhejiang Camp-Shinning New Material Co.Ltd

Organoclay Bentonite
Organoclay Bentonite

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