9004-36-8

Basic information

• Product Name: CELLULOSE ACETATE BUTYRATE
• Synonyms: cellaburate;Cellulose,acetatebutanoate;CELLULOSE ACETATE BUTYRATE;CELLULOSE ACETATE BUTYRATE POLYMER;CELLULOSE ACETOBUTYRATE;CELLULOSE ACETATE BUTYRATE, 38 WT. % BUT YRYL CONTENT, AVERAGE MN CA. 30,000;CELLULOSE ACETATE BUTYRATE, 52 WT. % BUT YRYL CONTENT, AVERAGE MN CA. 30,000;CELLULOSE ACETATE BUTYRATE, 31 WT. % BUT YRYL CONTENT, AVERAGE MN CA. 12,000
• CAS NO: 9004-36-8
• Molecular Weight: 0
• EINECS: 618-381-2
• Product Categories: Cellulose;Natural Polymers;Polymer Science;Materials Science;Natural Polymers;Polymer Science;Polymers
• Mol File: 9004-36-8.mol
• Article Data: 0

Chemical Properties

• Melting Point: 127-240 °C
• Appearance: White/Granular Crystalline Powder
• Density: 1.25 g/mL at 25 °C(lit.)
• Refractive Index: n20/D 1.475(lit.)
• Storage Temp.: 2-8°C
• Solubility: Practically insoluble in water, soluble in acetone, in formic acid and in a mixture of equal volumes of methanol and methylene chloride, practically insoluble in ethanol (96 per cent).
• CAS DataBase Reference: CELLULOSE ACETATE BUTYRATE(CAS DataBase Reference)
• NIST Chemistry Reference: CELLULOSE ACETATE BUTYRATE(9004-36-8)
• EPA Substance Registry System: CELLULOSE ACETATE BUTYRATE(9004-36-8)

Safety Data

• Safety Statements: 22-24/25
• Hazardous Substances Data: 9004-36-8(Hazardous Substances Data)

Usage

Description

CELLULOSE ACETATE BUTYRATE is a versatile organic cellulose ester that combines the properties of cellulose acetate and butyrate. It is known for its increased flexibility, moisture resistance, solubility, and compatibility with resins. The material's properties can be tailored by adjusting the butyryl content, which in turn affects its hardness, tensile strength, and heat resistance.

Uses

Used in Plastics Industry:
CELLULOSE ACETATE BUTYRATE is used as an injection moulding material for applications requiring toughness, such as tabulator keys and tool handles. The increased butyryl content enhances flexibility and moisture resistance, making it suitable for these uses.
Used in Packaging Industry:
CELLULOSE ACETATE BUTYRATE is used as a puncture-resistant film for packaging materials, providing protection and durability to the packaged products.
Used in Coating Industry:
CELLULOSE ACETATE BUTYRATE is used in lacquers for various items, including cables, fabrics, and furniture. Its compatibility with resins and solubility make it an ideal choice for coating applications.
Used in Coating Applications:
CELLULOSE ACETATE BUTYRATE is the most commonly used organic cellulose ester for coating applications due to its versatility and ability to be tailored for specific needs.
Used in Contact Lens Industry:
CELLULOSE ACETATE BUTYRATE is used as a contact lens material, specifically for hydrophobic lenses. Its properties provide comfort and durability for wearers.

Preparation

Cellulose acetate-butyrate (CAB) is prepared in a manner similar to that described previously for cellulose acetate. Esterification is carried out using a mixture of acetic anhydride and butyric anhydride with sulphuric acid as catalyst and then the product is slightly hydrolysed. Depending on the reaction conditions, various products may be obtained; commercial materials generally have about 1-2 butyryl groups per glucose residue.