Stabilized blood separating composition

Details Stabilized blood separating composition Stabilized blood separating composition

1977-04-28

1978-04-11

Sever, Frank

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

23230B, 210515, 210516, 210DIG23, B01D 2126

Patent

active

040837840

ABSTRACT:
Gel-like composition useful for separating and partitioning whole blood into serum and clot portions. The composition has a specific gravity between that of the serum and clot portions such that, when centrifuged in the presence of whole blood, the composition forms a chemical and physical barrier between the serum and clot portions. The composition comprises, in combination, a silicone fluid, an inert siliceous filler dispersed therein, and a network former consisting of a polysiloxane-polyoxyalkyl copolymer which stabilizes the composition by minimizing and/or avoiding "wet out" of the siliceous filler with time. The composition has a viscosity within the range of about 200,000 to about 600,000 centistokes, preferably within the range of about 350,000 to about 450,000 centistokes.

REFERENCES:
patent: 3780935 (1973-12-01), Lukacs et al.
patent: 3852194 (1974-12-01), Zine
patent: 3997442 (1976-12-01), Gigliello et al.
patent: 4018564 (1977-04-01), Wright

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