Branched polyesters prepared from hydroxyfunctional components w

Details Branched polyesters prepared from hydroxyfunctional components w Branched polyesters prepared from hydroxyfunctional components w

1997-10-16

1999-11-16

Mosley, Terressa

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

Synthetic resins

From carboxylic acid or derivative thereof

528176, 528193, 528194, 528271, C08G 6400

Patent

active

059860391

ABSTRACT:
Polyesters are described which are substantially the condensation products of at least one dicarboxylic acid, at least one volatile diol and at least one hydroxyl-functional component with functionality greater than 2 which controls ultimate viscosity. The products are suitable vehicles for the formulated thixotropic gels for centrifugal separation of fluids such as serum into high and low density components of, for example, separation of mixtures of cells on the basis of density.

REFERENCES:
patent: 2793219 (1957-05-01), Barrett et al.
patent: 2955121 (1960-10-01), Myers et al.
patent: 4101422 (1978-07-01), Lamont et al.
patent: 4148764 (1979-04-01), Lamont et al.
patent: 5124434 (1992-06-01), O'Brien
patent: 5506333 (1996-04-01), O'Brien et al.

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