Amphoteric copolymer derived from vinylpyridine and acetoxystyre

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

1993-01-12

1993-08-03

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...

5253271, C08C 1912

Patent

active

052329950

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: 4775730 (1988-10-01), Gupta
patent: 4857601 (1989-08-01), Gupta
patent: 4877843 (1989-10-01), Gupta

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