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English Name: Cellulose Acetate Butyrate (CAB)
CAS Number: 9004-36-8
Other Names: CAB Resin, Cellulose Butyrate Ester, CAB Plastic Additive
Cellulose acetate butyrate (CAB, CAS 9004-36-8) is a thermoplastic resin derived from natural cellulose, possessing excellent transparency, weather resistance, flexibility, and impact resistance. CAB is widely used in coatings, inks, plastic modification, adhesives, automotive coatings, and electronic coatings, and is a key film-forming material in high-performance coating systems.
CAB exhibits low hygroscopicity, good UV stability, and excellent compatibility, making it miscible with various resin systems such as nitrocellulose, acrylic resins, and polyester resins. It is an important component of high-end wood coatings, electronic coatings, and automotive refinish paints.
| Item | Specification |
|---|---|
| Product Name | Cellulose Acetate Butyrate (CAB) |
| CAS Number | 9004-36-8 |
| Appearance | White to off-white powder / granules |
| Butyryl Content | 35–52% |
| Acetyl Content | 13–21% |
| Hydroxyl Content | 1.2–2.8% |
| Glass Transition Temp (Tg) | 70–125°C (depending on grade) |
| Viscosity | Low / Medium / High grades available |
| Solubility | Soluble in esters, ketones, aromatic solvents |
| Moisture Absorption | Very low |
| Storage | Cool, ventilated, dry place |
| Shelf Life | 24 months |
Cellulose acetate butyrate (CAB) is a highly valuable cellulose ester resin commonly used in the following industries:
1. Coatings and Inks (CAB for coatings):
Improves film transparency, gloss, and weather resistance
Improves film hardness and scratch resistance
Widely used in automotive refinish paints, wood coatings, and plastic coatings
2. Plastics Modification (CAB resin for plastics):
Enhances impact resistance and flexibility
Improves transparency and UV stability
3. Adhesives:
Improves drying speed and adhesion
Enhances weather resistance and moisture resistance
4. Printing Inks and Screen Printing Inks:
Increases adhesion
Improves gloss and abrasion resistance
5. Electronic and Optical Coatings:
Suitable for high-transparency films
Anti-fog, anti-scratch, and antistatic applications
High transparency and excellent optical properties
Superior weather resistance and UV aging resistance
High flexibility while maintaining good hardness
Low moisture absorption and good dimensional stability
Excellent compatibility with various resin systems
Available in various viscosities and acyl contents
Over 15 years of experience exporting cellulose ester resins
Offering multiple CAB models: low/medium/high viscosity options
Products comply with international environmental regulations (RoHS, REACH)
International customers cover North America, Europe, and Southeast Asia
Providing free sample testing and technical support
Stable supply and long-term production capability
Packaging Specifications: 25kg kraft paper bag / 500kg pallet
Storage Conditions: Store in a cool, dry place, sealed.
Shelf Life: 24 months
Avoid high temperatures and direct sunlight.
Q1: What CAB grades can you supply?
👉 We supply multiple viscosity grades and various butyryl contents based on customer needs.
Q2: Is CAB soluble in alcohols?
👉 It has limited solubility in lower alcohols but dissolves well in ketones and esters.
Q3: Can I get a free sample?
👉 Yes, free samples (200–500g) are available for testing.
Q4: What industries commonly use CAB?
👉 Coatings, inks, plastics modification, adhesives, and electronics.
Q5: Is CAB safe for transportation?
👉 Yes, it is non-dangerous and safe to ship globally.
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