Cellulose acetate butyrate, average Mn ~30 kDa

Typical Properties
CAS	9004-36-8
Catalog	ACM9004368-17
Molecular Weight	Average Mn ~30 kDa
Melting Point	127-240 °C
Density	1.25 g/mL at 25 °C (lit.)
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).
Appearance	White
Storage	2-8 °C
Color	White
Composition	C36H70O19
EC Number	618-381-2
Grade	Reagent Grade
MDL Number	MFCD00081513
Quality Level	200
Shipping	Ambient

Overview

Description

Cellulose acetate butyrate (CAB) is a cellulose mixed fatty acid ester obtained from cellulose, acetic anhydride and butyric anhydride under the action of an acid catalyst. CAB is a thermoplastic resin, and the content of acetyl and butyryl groups in different products varies greatly, which has a great impact on the performance and use of the product. Cellulose acetate butyrate is an additive widely used in the coating industry. Compared with traditional cellulose acetate, it has a wider range of solubility. It not only dissolves in strong polar solvents, but also cellulose acetate butyrate with high butyryl content even Soluble in alcohol solvents. Therefore, CAB is widely used in wood coatings, plastic coatings and other coatings, and has the functions of improving coating fluidity, leveling, outdoor durability, pigment orientation and flexibility.

Features

High stability; Strong flexibility; High transparency; Good mechanical strength

Application

Used in high-grade coatings, such as UV-curable coatings;Photographic chemicals;Polymer modification;Ink