444790
Poly(tert-butyl acrylate-co-ethyl acrylate-co-methacrylic acid)
powder, methacrylic acid 23
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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:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
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description
K-value 34 - 40 DIN 53 726
Quality Level
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
Related Categories
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.
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
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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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