444790

Poly(tert-butyl acrylate-co-ethyl acrylate-co-methacrylic acid)

powder, methacrylic acid 23

• Synonym(s): Ethyl acrylate-methacrylic acid-tert -butyl acrylate copolymer
• Linear Formula: [CH₂CH[CO₂C(CH₃)₃]₃]_x[CH₂CH(CO₂C₂H₅)]_y[CH₂C(CH₃)(CO₂H)]_Z
• CAS Number: 159666-35-0
• MDL number: MFCD00241441
• UNSPSC Code: 12162002
• PubChem Substance ID: 24868146
• NACRES: NA.23

Properties

• description: K-value 34 - 40 DIN 53 726
• Quality Level: 100
• form: powder
• feed ratio: methacrylic acid 23
• acid number: 140‑160 mg KOH/g
• transition temp: T_g 75 °C
• solubility: water and ethanol: soluble in salt form
• density: 0.4 g/mL at 25 °C (lit.)
• SMILES string: C\C=C\C(O)=O.CCOC(=O)C=C.CC(C)(C)OC(=O)C=C

Description

General description

Film forming thermoplastic.

Poly(tert-butyl acrylate-co-ethyl acrylate-co-methacrylic acid) (PTBEM) is an amphiphilic block copolymer.

Application

Hair care products.

PTBEM can be used to prepare a site specific polymeric drug delivery system for prednisone, a steroidal anti-inflammatory drug.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable