442348
Poly(styrene-co-maleic anhydride), partial isooctyl ester, cumene terminated
average Mn ~2,300 by GPC
Synonym(s):
maleated copolymer, maleated polymer, maleic copolymer
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![Poly[(isobutylene-alt-maleic acid, ammonium salt)-co-(isobutylene-alt-maleic anhydride)] average Mw ~60,000](/deepweb/assets/sigmaaldrich/product/structures/208/717/cfb2dcac-b112-4e25-9140-f3649ec430ea/640/cfb2dcac-b112-4e25-9140-f3649ec430ea.png)
form
solid
mol wt
average Mn ~2,300 by GPC
composition
acid groups converted to ester, 50%
acid number
95‑120 mg KOH/g
transition temp
Tg 66 °C
solubility
aqueous base: soluble
ketones and ethers: soluble
General description
~4:1 mole ratio of styrene: maleic anhydride
Application
Leveling aids in films, embrittling/anti-resoil agents in shampoos, pigment dispersants, paper sizing and aqueous grinding fluids.
Poly(styrene-co-maleic anhydride), partial isooctyl ester, cumene terminated (PSMA) may be used in the preparation of inorganic-polymeric nanoparticles (Ag-PSMA) which can be converted to Au based Janus nanoparticles.
Features and Benefits
Low solution viscosity and high functionality.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Eccentric inorganic-polymeric nanoparticles formation by thermal induced cross-linked esterification and conversion of eccentricity to raspberry-like Janus.
Li W P, et al.
Chemical Communications (Cambridge, England), 49(16), 1609-1611 (2013)
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