Amphoteric copolymer derived from vinylpyridine and acetoxystyre

Details Amphoteric copolymer derived from vinylpyridine and acetoxystyre Amphoteric copolymer derived from vinylpyridine and acetoxystyre

1992-10-30

1993-05-11

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526261, C08F 2606

Patent

active

052101495

ABSTRACT:
A unique polymer was synthesized via copolymerization of vinylpyridine and acetoxystyrene under radical-initiated conditions followed by acidic or basic hydrolysis of the acetoxy group to afford the corresponding hydroxy group. The built-in acid-base dual functionality (phenolic and pyridyl units) in this polymer backbone gives rise to its unique solubility properties over a wide pH range in both aqueous and non-aqueous media. Due to its amphoteric nature, this polymer finds application as an anti-stat, viscosity modifier, and/or ion-exchange resin.

REFERENCES:
patent: 2611763 (1952-09-01), Jones
patent: 2732351 (1956-01-01), Clarke
patent: 3553180 (1971-01-01), Cleary
patent: 4593082 (1986-06-01), Dambroski et al.
patent: 4775730 (1988-10-01), Gupta
patent: 4902780 (1990-02-01), Bourrain et al.

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