High yield process for producing polyaldehyde microspheres

Details High yield process for producing polyaldehyde microspheres High yield process for producing polyaldehyde microspheres

1984-10-19

1987-06-30

Marquis, Melvyn I.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

523223, 526315, C08G 202

Patent

active

046771387

ABSTRACT:
Homopolymeric polyaldehyde microspheres can be prepared in yields of up to about 90% by preparing an aqueous solution consisting essentially of a suitable concentration of an .alpha.,.beta.-ethylenically unsaturated aldehyde and a suitable concentration of an appropriate surfactant under suitable conditions such that the surfactant has a net electrostatic charge. The solution, which may also contain a ferrofluidic material, fluorescent dye or additional solvent, is then irradiated under an inert atmosphere with a sufficient dose of .gamma.-radiation to effect polymerization and the monodisperse homopolymeric polyaldehyde microspheres so produced are recovered. Copolymeric polyaldehyde microspheres can be prepared by adding to the solution a suitable concentration of a copolymerizable comonomer before initiating polymerization.
Monodisperse homopolymeric or copolymeric polyaldehyde microspheres useful for affinity chromatography, cell labeling, cell separation and diagnostic purposes can thus be prepared in significantly higher yield than was previously obtainable.

REFERENCES:
patent: 3105801 (1963-10-01), Bell et al.
patent: 4413070 (1983-11-01), Rembaum
patent: 4438239 (1984-03-01), Rembaum et al.
patent: 4534996 (1985-08-01), Rembaum et al.
Journal of Cellular Science, vol. 56, pp. 157-175 (1982), Margel et al.

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