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CAPB Production Plant
Amphoteric Surfactant · Mild & Low Irritation
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Cocamidopropyl Betaine (CAPB) Production Plant

Amphoteric Surfactant · Mild & Low Irritation
Technology & Process

Advanced Amidation & Quaternization Process

Cocamidopropyl Betaine (CAPB) is a high-performance amphoteric surfactant with excellent foaming, thickening, low irritation, and compatibility properties. Nanjing Qino Automatic Control Equipment Co., Ltd. has mature technology in the design and manufacturing of CAPB production plants, adopting advanced amidation and quaternization processes to ensure stable product quality.
Our CAPB production plant adopts a two-step process: first, amidation reaction to produce Cocamidopropyl Dimethylamine (PKO), then quaternization reaction to produce CAPB. The product quality is stable with high Active Matter Content, light Color, and excellent performance.
Core Process Flow

Amidation Reaction System

• Coconut oil fatty acid undergoes amidation reaction with N,N-dimethyl-1,3-propanediamine (DMAPA).
• Reaction temperature: 140-160°C.
• Vacuum dehydration to remove water generated by reaction.
• Reaction Time: 4-6 hours.
• Product: Cocamidopropyl Dimethylamine (PKO).

Quaternization Reaction System

• PKO undergoes quaternization reaction with Sodium Chloroacetate (SMCA).
• Reaction temperature: 70-90°C.
• Reaction Time: 6-8 hours.
• Reaction carried out in aqueous solution.
• Product: Cocamidopropyl Betaine (CAPB).

Post-Treatment System

• Adjust pH Value to 5.0-7.0.
• Adjust Active Matter Content (30-35%).
• Filtration to remove impurities.
• Degassing treatment.
• Product storage.
Technical Features & Advantages
Feature
Qino Technology
Description
Amidation Process
Vacuum Dehydration Method
Complete reaction, stable product quality
Quaternization Process
Mild Reaction Conditions
Few by-products, high product Purity
pH Control
Precise Control
Good product stability
Active Matter Content
30-35%
Adjustable according to customer requirements
Color Control
<100 APHA
Light product Color
Product Stability
Excellent
No stratification during long-term storage
Equipment Configuration Highlights

Amidation Reactor

Stainless steel construction with vacuum system and agitation.

Vacuum System

Efficient dehydration to ensure complete amidation reaction.

Filtration System

Remove impurities for clear and transparent product.

Quaternization Reactor

Mild reaction conditions with precise temperature control.

pH Adjustment System

Precise control of product pH Value.
 

Storage System

Stainless steel tanks with Nitrogen protection.
Applications & Markets

The Preferred Surfactant For Personal Care Industry

CAPB (Cocamidopropyl Betaine) is a high-performance amphoteric surfactant with excellent foaming, thickening, low irritation, antistatic properties, and compatibility. Widely used in personal care, detergents, and other fields, it is an ideal raw material for shampoo, body wash, and other products.
Main Application Areas
Personal-Care-Industr • Shampoo: Primary surfactant, mild cleansing, rich foam.
• Body Wash: Mild on skin, easy to rinse.
• Facial Cleanser: Low irritation, thorough cleansing.
• Baby Care Products: Extremely low irritation, high safety.
• Hand Wash: Mild on hands.
Personal Care Industry
Primary-Market • Liquid Detergent: Thickening and foaming to improve product performance.
• Dishwashing Liquid: Mild degreasing, gentle on hands.
• Laundry Liquid: Antistatic, softens fabrics.
Detergent Industry
Typical Project References

Amphoteric Properties

Good compatibility with anionic, cationic, and nonionic surfactants.

Low Irritation

Extremely low irritation to skin and eyes.

Foaming Properties

Rich and fine foam with good stability.

Thickening Properties

Can increase product viscosity.

Antistatic Properties

Reduces static electricity generation.

Biodegradability

Good biodegradability.
Raw Materials & Specifications

High-Quality Raw Materials Ensure Premium CAPB

Our CAPB production plant is designed to process high-quality raw materials. Through advanced amidation and quaternization processes, products meet international standards with high Active Matter Content, light Color, and excellent performance.
Raw Material Specifications
Coconut Oil Fatty Acid
Parameter
Specification Requirement
Acid Value
250-270 mgKOH/g
Iodine Value
8-12 gI₂/100g
Moisture
≤0.5%
Color
≤50 APHA
Appearance
White to pale yellow solid
N,N-Dimethyl-1,3-Propanediamine (DMAPA)
Parameter
Specification Requirement
Purity
≥99%
Moisture
≤0.5%
Color
≤30 APHA
Sodium Chloroacetate (SMCA)
Parameter
Specification Requirement
Purity
≥98%
Appearance
White crystalline powder
Product Quality Specifications
CAPB Product Specifications
Indicator
Specification
Description
Active Matter Content
30±2% or 35±2%
According to customer requirements
pH Value (10% solution)
5.0-7.0
Weakly acidic to neutral
Color (APHA)
≤100
Pale yellow transparent liquid
Free Amine
≤0.5%
Low irritation
Sodium Chloride
≤6% or ≤8%
According to Active Matter Content
Appearance
Pale yellow transparent liquid
No mechanical impurities
Capacity Specifications
Model
Capacity (tons/year)
Floor Area (㎡)
Power Requirement (kW)
Q-CAPB-500
500
300-400
100-150
Q-CAPB-1000
1,000
400-500
150-200
Q-CAPB-3000
3,000
600-800
250-350
Custom
3,000+
Custom design
Custom design
Utility Requirements (Per 1 Ton/Batch Example)
Utility
Consumption
Specification
Electricity
150-200 kW
440V/60Hz
Cooling Water
30-50 m³/hour
32°C Inlet, 40°C Outlet
Steam
0.5-1.0 tons/batch
0.5 MPa Saturated Steam
Compressed Air
20-30 Nm³/hour
0.6 MPa, Instrument Grade
Nitrogen
10-20 Nm³/hour
99.9% Purity
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 Email: njqino@gmail.com 
 Add: Building 28, Botong Innovation Industrial Park, No. 2 Qiancheng Road, Liuhe District, Nanjing, Jiangsu Province, China

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