Serum and plasma separating compositions and blood testing conta

Details Serum and plasma separating compositions and blood testing conta Serum and plasma separating compositions and blood testing conta

Filed on

1995-02-21

Date issued

1996-04-23

Examiner

Gitomer, Ralph J.

Patent Class

Chemistry: molecular biology and microbiology

SubClass

Maintaining blood or sperm in a physiologically active state...

Other Related Categories

210516, 210789, 252 60, A01N 102, C09K 300

Type

Patent

Status

active

Patent number

055102379

Description

ABSTRACT:
The invention provides a serum or plasma separating composition which comprises a cyclopentadiene resin, a viscosity adjusting agent and an organic gelling agent. The composition is characterized in that the cyclopentadiene resin is a liquid resin at a temperature of 25.degree. C., the viscosity adjusting agent being a liquid ester obtained from propionic acid, butyric acid, benzoic acid or phthalic acid, the organic gelling agent being a condensation product of sorbitol and an aromatic aldehyde, the composition containing 0.8 to 25 parts by weight of the viscosity adjusting agent and 0.03 to 0.9 part by weight of the organic gelling agent per 100 parts by weight of the cyclopentadiene resin. The composition forms a satisfactory separating layer even when subjected to a centrifugal separation operation at a set temperature of 4.degree. C.

REFERENCES:
patent: 4994393 (1991-02-01), Pradhan
Anraku, H., Cyclopentadiene Oligomer Containg . . . Chem AB 113: 2995d 1990 .

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