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444790

Sigma-Aldrich

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

powder, methacrylic acid 23

Synonym(s):

Ethyl acrylate-methacrylic acid-tert -butyl acrylate copolymer

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About This Item

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

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

Tg 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

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.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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pH-Responsive composite based on prednisone-block copolymer micelle intercalated inorganic layered matrix: Structure and in vitro drug release.
Li Y, et al.
Chemical Engineering Journal, 151(1-3), 359-366 (2009)

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