Supports for active entities

Details Supports for active entities Supports for active entities

1991-07-01

1993-10-12

Michl, Paul R.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 61, 521 62, 521 63, 521 64, 523220, 523221, 523500, 523502, C08J 926, C08J 928, C08K 722, C08L 6706

Patent

active

052526216

ABSTRACT:
A polymeric bead has now been developed to act as a support for other entities having a volume mean diameter of up to 250 microns and having a surface provided with pores which form at least 10% by area of the surface. At least one third of the total area of the pores is provided by pores having a larger size of at least 0.4 micron. A method for the manufacture of such polymeric beads involves using a water-in-oil-in-water emulsion technique in which the amount of water used in the preparation of the aqueous phase is not greater than 125 parts by weight per 265 parts by weight of the mixture of the polyester resin and monomer which is used.
The porous beads provide an excellent base for carrying enzymes, bacteria and catalysts species useful in a wide range of applications.

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