CP-40 Organoclay for Coatings & Grease

CP-40 is a Camp-Shinning organophilic montmorillonite grade for two distinct formulation routes: solvent-based coatings and lubricating grease. In coatings it is evaluated for viscosity, pigment suspension, thixotropy and anti-sagging across low- to medium-high-polarity systems. In grease, the confirmed experimental addition range is 2–8 wt% of the total formulation. A suitable polar activator is recommended to improve CP-40 dispersion and help rheological performance develop more fully. Coating and grease processes are different and must be qualified separately by industrial formulators.

What is CP-40 organoclay?

A dual-use organophilic montmorillonite grade for viscosity, thixotropy, suspension and anti-sagging in solvent coatings, and organoclay thickening in qualified grease formulations.

Product	Best for	System type	Activation method	Main benefit	Limitation
CP-40	Solvent-based coatings and organoclay-thickened grease	Low- to medium-high-polarity solvents; compatible grease base oils	High shear plus polar activation; suitable polar activator recommended in grease	Viscosity, suspension, anti-sag and grease thickening	Coating pre-gel instructions are not a grease manufacturing recipe

Which applications is CP-40 suitable for?

Solvent-based paints and coatings — rheology, anti-sagging and pigment suspension
Lubricating grease — 2–8 wt% experimental addition range with formulation testing
Oil-based drilling fluids — secondary screening scope only when the current drilling data support selection

Application boundary: Do not transfer the solvent-coating pre-gel process directly into grease manufacture. Grease performance depends on base oil, activator, shear, temperature history and target consistency; coating performance depends on solvent, resin, pigment and application method.

What are the technical parameters of CP-40?

Parameter	Published value	Scope / note
Composition	Organic derivative of montmorillonite clay	Same-company CP-40 source
Appearance	Fine white powder	Visual description
Moisture	≤3.5%	105°C for 2 hours
Loss on ignition	28–31%	1,000°C
Bulk density	0.53 g/cm³	Published grade value
Fineness	≥98% passing 74 μm	Sieve reference
Solvent-coating addition	0.2–2.0 wt%	Published general solvent-system guidance; optimize in the actual coating
Coating activator reference	40–50% of CP-40 weight; about 30–40% in xylene guidance	Coating process only; current TDS controls type and exact level
Grease addition	2–8 wt% of total grease formulation	Confirmed experimental range; final level by base-oil and consistency testing
Grease activation	Suitable polar activator recommended	Select type, ratio and sequence by formulation testing
Shelf life	24 months	Store dry and ventilated at 0–30°C
Packaging	25 kg, 50 lb or 600 kg	Confirm current availability

How should CP-40 be dispersed in solvent-based coatings?

A 6–10% pre-gel may be prepared when the plant process calls for a concentrate. That concentration is not the final coating dosage.

Charge the main solvent or solvent blend.
Add CP-40 under agitation and apply high shear for about five minutes.
Add the TDS-approved polar activator at the validated ratio and continue high-shear dispersion for about five minutes.
Add surfactants and remaining formulation components only in the validated order.
Measure fineness, viscosity, thixotropic index, sag resistance and storage stability before scale-up.

How should CP-40 be used in lubricating grease?

Screen CP-40 at 2–8 wt% of the total grease formulation. A suitable polar activator is recommended because it can improve dispersion and allow the grade’s thickening and rheological performance to develop more fully. The activator type, ratio, addition point, process temperature, shear and cooling profile must be selected by testing the actual base oil.

Define the base oil and target worked penetration or NLGI consistency.
Run a controlled CP-40 ladder within 2–8 wt% while holding oil, activator and process conditions constant.
Measure worked penetration, oil separation, mechanical stability and any application-specific temperature requirement.
Confirm the final process with the current TDS before plant scale-up.

How does CP-40 compare with related CP grades?

Grade	Use when	Selection boundary
CP-40	One grade is being evaluated separately for solvent coatings and lubricating grease	Use separate coating and grease test plans
CP-250A	A dedicated grease grade is required for the target base oil and temperature profile	Use its own loading and process data
CP-EL	Low-polarity solvent coating or mineral/white-oil screening is the primary need	Compare base oil, solvent and activation data
CP-EDS	Fine-particle, medium/high-polarity performance is central	Not an automatic substitute for CP-40

What should formulators check when results are off target?

Observed issue	Check first	Practical next step
Coating settles or sags	Activation, shear, polarity match and use level	Check activator choice, sequence and dosage in a controlled coating trial
Coating is too thick or levels poorly	Excess structure or activator	Compare low- and high-shear viscosity and adjust through a controlled ladder
Grease is too soft	Clay level, activator, base-oil polarity, shear and cooling	Measure worked penetration and repeat with one variable changed at a time
Grease is grainy or too hard	Wetting, dispersion, over-treatment and temperature history	Review the dispersion endpoint and process before changing loading
Oil separation	Base-oil compatibility and network development	Compare activator and CP-40 levels under the same test method

Frequently asked questions about CP-40

Can CP-40 be used in both coatings and lubricating grease?

Yes. CP-40 is positioned as a dual-use grade, but coatings and grease require separate dosage, activation and processing trials.

What is the CP-40 addition range for lubricating grease?

The confirmed experimental range is 2–8 wt% of the total grease formulation. Final loading depends on base oil, activator, process and target consistency.

Should a polar activator be used with CP-40 in grease?

A suitable polar activator is recommended to improve dispersion and help the rheological properties develop more fully. Its type, ratio and addition sequence must be selected by testing.

What is the CP-40 addition range in solvent coatings?

The published general solvent-system guidance is 0.2–2.0 wt%. Optimize within the actual resin, solvent, pigment and application conditions.

Can the CP-40 coating pre-gel process be used for grease?

No. A solvent-coating pre-gel is a coating concentrate and is not a grease manufacturing recipe.

Which grease tests should be used for CP-40?

At minimum, compare worked penetration, oil separation and mechanical stability at fixed process conditions, then add the temperature and service tests required by the application.

Which coating properties should be checked?

Check dispersion fineness, low- and high-shear viscosity, thixotropic recovery, sag resistance, leveling and storage stability.

How can I obtain the current CP-40 process?

Request the current TDS, SDS, COA and sample from Camp-Shinning and provide the coating solvent/resin or grease base-oil details.

Technical review and related resources

Technical owner: Camp-Shinning Application Technology Team, China. Product selection and final use level should be confirmed against the current TDS, SDS, lot COA and formulation test results.

Last reviewed: September 24, 2026

Product resources: all organoclay products · Product Finder

Related products: Solvent-based organoclay grades · CP-250A · CP-EL

Related applications: Paint & Coatings · Lubricating Grease · Oil-Based Drilling Fluids

Related formulation goals: Anti-Sagging · Viscosity Control