Reversed-phase packing material and method

Details Reversed-phase packing material and method Reversed-phase packing material and method

1986-05-13

1990-04-24

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 28, 210656, C08F 846, B01D 1508

Patent

active

049201522

ABSTRACT:
Reversed-phase materials and a method for producing such materials are disclosed. In making the materials, first a thin layer of an adsorbate comprising reactive amine groups is adsorbed to a support material such as silica, alumina or titania. A portion of the reactive amine groups of said adsorbed coating are then reacted with an amount of a hydrophobic reagent sufficient to effect crosslinking of said coating. At least one remaining reactive amine group, and preferably all of the reactive amine groups of said crosslinked adsorbed coating, are then reacted, preferably in the presence of a proton scavenger, with an amount of a hydrophobic anhydride sufficient to form an amide bond with said reactive amine.

REFERENCES:
patent: 3538024 (1970-11-01), Dichbruger et al.
patent: 3951815 (1976-04-01), Wrasidlo
patent: 4245005 (1981-01-01), Regnier et al.
patent: 4544485 (1985-10-01), Pinkerton et al.
patent: 4551245 (1985-11-01), Ramsden et al.
patent: 4560704 (1985-12-01), Regnier
patent: 4675384 (1987-06-01), Dromard et al.

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