High crush strength heterogeneous ion exchange resins of crossli

Details High crush strength heterogeneous ion exchange resins of crossli High crush strength heterogeneous ion exchange resins of crossli

1979-02-22

1980-11-25

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 38, 525239, C08L 2708

Patent

active

042359724

ABSTRACT:
Ion exchange resins exhibiting increased crush strength and/or higher density are prepared from a cross-linked polymer by imbibing a halo-substituted olefin within the cross-linked polymer's structure and subsequently polymerizing the imbibed olefin. For example, imbibing vinylidene chloride within a chloromethylated, cross-linked copolymer of styrene and subsequently polymerizing the vinylidene chloride forms a high density resin, which resin is useful in the preparation of ion exchange and chelate type resins having improved crush strength.

REFERENCES:
patent: 2899405 (1959-08-01), Coover, Jr.
patent: 3332890 (1967-07-01), Hatch
patent: 3548034 (1970-12-01), Cleemann et al.
patent: 3632679 (1972-01-01), DeWitt et al.
patent: 4152496 (1979-05-01), Barrett et al.

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