发明授权
US4461884A Intramolecular polymeric complexes-viscosifiers for acid, base and salt (aqueous) solutions 失效
分子内聚合复合物 - 用于酸,碱和盐(水溶液)的增粘剂

Intramolecular polymeric complexes-viscosifiers for acid, base and salt
(aqueous) solutions
摘要:
The present invention relates to improved viscosification agents for a variety of aqueous solutions which comprise a family of intramolecular polymeric complexes (i.e., polyampholytes) which are terpolymers of acrylamide/metal styrene sulfonate/methacrylamidopropyltrimethylammonium chloride (MAPTAC).The metal styrene sulfonate is an anionic monomer, while MAPTAC is cationically charged. These acrylamide-based polyampholytes have approximately 1 to about 50 mol % of the anionic monomer and approximately 1 to about 50 mole % of the cationic moiety present within the macromolecular structure. These groups are not necessarily present in an equimolar charge ratio. The excess undissociated charge allows for facile dispensability or solubility of the polyampholytes into fresh water.
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