Method of making hydrophobic copolymers hydrophilic

Details Method of making hydrophobic copolymers hydrophilic Method of making hydrophobic copolymers hydrophilic

1990-08-06

1991-06-25

Michl, Paul R.

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

Synthetic resins

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

525293, 525311, 5253302, 525902, C08F26702, C08F26502

Patent

active

050267817

ABSTRACT:
A method for altering a macroporous cross-linked hydrophobic copolymeric lattice produced by precipitation polymerization in a solvent of at least one monounsaturated ester monomer and at least one polyunsaturated ester monomer soluble therein, in order to render the hydrophobic copolymeric lattice hydrophilic. The method involves saponifying the hydrophobic copolymeric lattice by reacting the surface of the hydrophobic copolymeric lattice with an aqueous alkali. The surface can also be rendered hydrophilic by polymerizing an acrylate monomer onto the lattice in order to form a surface containing carboxylic acid sites. The carboxylic acid sites formed on the surface of the lattice are converted to carboxylate anions.

REFERENCES:
patent: 3892822 (1975-07-01), Frechtling
patent: 4724240 (1988-02-01), Abrutyn

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