| Identification | Back Directory | [Name]
CELLULOSE ACETATE BUTYRATE | [CAS]
9004-36-8 | [Synonyms]
AK 211
CAB 04
CAB 171
CAB 0.05
CA 381-0.5
CAB 171-15
CAB 151-0.3
CAB 151-0.7
cellaburate
CAB 151-0.3C
Acetylbutyrylcellulose
Acetobutyrate cellulose
CELLULOSE ACETOBUTYRATE
Cellulose,acetatebutanoate
CELLULOSE ACETATE BUTYRATE
AK 211 (cellulose derivative)
CELLULOSE ACETATE BUTYRATE POLYMER
CELLULOSE ACETATE BUTYRATE, PHARMA
Cellulose acetate butyrate, Mn ≈ 70,000
Cellulose acetate butanoate: (Celvacene)
Cellulose acetate butyrate average Mn ~12,000
Cellulose acetate butyrate average Mn ~30,000
Cellulose acetate butyrate average Mn ~65,000
Cellulose acetate butyrate average Mn ~70,000
Cellaburate (350 mg) (Cellulose Acetate Buty-rate)
Cellulose acetate butyrate, butyryl content 35-39%
Cellulose acetate butyrate, butyryl content 36-40%
Cellulose acetate butyrate, butyryl content 44-48%
Cellulose acetate butyrate, butyryl content 50-54%
Cellulose acetate butyrate, butyryl content 16.5-19.0%
Cellulose acetate butyrate, butyryl content 35-39% 500GR
Cellulose Acetate Butanoate, mittlere Molmasse 16000 - 65000 g/mol
CELLULOSE ACETATE BUTYRATE, 17 WT. % BUT YRYL CONTENT, AVERAGE MN CA. 65,
CELLULOSE ACETATE BUTYRATE, 37 WT. % BUT YRYL CONTENT, AVERAGE MN CA. 70,000
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 | [EINECS(EC#)]
618-381-2 | [Molecular Formula]
N/A | [MDL Number]
MFCD00081513 |
| Chemical Properties | Back Directory | [Appearance]
white, fibrous solid | [Melting point ]
127-240 °C
| [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). | [form ]
Granular Crystalline Powder | [color ]
White | [Odor]
Odorless | [Dielectric constant]
3.2（Ambient） | [EPA Substance Registry System]
Cellulose acetate butyrate (9004-36-8) |
| Hazard Information | Back Directory | [Chemical Properties]
white granular crystalline powder | [Uses]
Contact lens material (hydrophobic).
Cellulose acetate butyrate is the most commonly used organic cel- lulose ester for coating applications.
| [Definition]
Cellulose acetate butyrate (CAB) is a cellulose ester where the hydroxyl groups attached to the glycoside rings in cellulose are partially or fully substituted by acetyl and butyryl groups. The ratio between acetyl and butyryl substitution can be varied in their synthesis, and somewhat different properties can be obtained. The total degree of substitution (DS) is regarded as a maximum of three; however, for a degree of polymerization (DP) of less than 134, a slightly higher DS can occur due to the end-group contribution. Both the DS and the molecular weight of cellulose esters can be altered, and both are reported to lead to a variation in material properties[1].
| [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. | [Industrial uses]
Commonly called butyrate or CAB, it is somewhattougher and has lower moisture absorptionand a higher softening point than acetate.CAB is made by the esterification of cellulosewith acetic acid and butyric acid in the presenseof a catalyst. It is particularly valuedfor coatings, insulating types, varnishes, andlacquers.
Special formulations with good weatheringcharacteristics plus transparency are used foroutdoor applications such as signs, light globes,and lawn sprinklers. Clear sheets of butyrateare available for vacuum-forming applications.Other typical uses include transparent dial covers,television screen shields, tool handles, andtypewriter keys. Extruded pipe is used for electricconduits, pneumatic tubing, and low-pressurewaste lines. Cellulose acetate butyrate alsois used for cable coverings and coatings. It ismore soluble than cellulose acetate and moremiscible with gums. It forms durable and flexiblefilms. A liquid cellulose acetate butyrate isused for glossy lacquers, chemical-resistantfabric coatings, and wire-screen windows. Ittransmits ultraviolet light without yellowing orhazing and is weather-resistant. | [Solubility in organics]
Chlorinated hydrocarbons, esters, lower molecular weight ketones, nitroparaffins | [Advantages]
Cellulose Acetate Butyrate, commonly known as CAB, is a thermoplastic material derived from cellulose. It is a clear and amorphous polymer that combines the benefits of cellulose acetate and cellulose butyrate. CAB offers a unique combination of clarity, impact resistance, and chemical resistance, making it a popular choice in various industries. It is commonly used to produce clear and tinted sheets, films, and coatings for eyewear, automotive interior trim, signage, and decorative laminates. CAB is also employed in the manufacturing of consumer goods, including handles, knobs, and other household items, due to its durability, ease of processing, and aesthetic appeal.
| [References]
[1] Malin Nejstr?m. “On Structural and Molecular Order in Cellulose Acetate Butyrate Films.” Polymers 15 9 (2023).
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