Henkel Corporation

Alan C Kilbarger

William L O'Brien

Louis Rebrovic

William S Kain

Donald V Kinsman

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.

Branched polyesters prepared from hydroxyfunctional components with

A fluid which comprises an olefin-terminated polyester an unmodified polyester and a polymerized .alpha.-olefin is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The fluid is useful as a component of a partitioning composition formulated to have appropriate specific gravity to be positioned intermediate the light and heavy blood phases during centrifugation. A partitioning composition including a fluid of the invention provides a particular advantage in blood collection vessels used in therapeutic drug monitoring, due to the relatively low affinity between the fluid component of the composition and commonly monitored classes of drugs.

Fluid composition for physiological separations with enhanced resistance

A polyester is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The polyester is useful as a component of a partitioning composition formulated to have appropriate specific gravity to be positioned intermediate the light and heavy blood phases during centrifugation. A partitioning composition including a polyester of the invention provides a particular advantage in blood collection vessels due to its lighter and more consistent coloration. The polyester composition can be prepared with relative ease compared to prior art polyesters useful in blood partitioning compositions.

Method of partitioning blood using polyesters

Polyesters for use in blood partitioning

Alpha-(p-alkoxybenzylidene) carboxylic acids are used as color stabilizers, processing aids and whiteners for soap.

Alpha-(p-alkoxybenzylidene) carboxylic acids as color stabilizers,

A process and liquid composition for cleaning, restoring and polishing a hard, porous surface wherein the composition contains from 0.1 to 4 weight percent of a surfactant, from 5 to 20 weight percent of a synthetic hydrocarbon oil, and from 76 to 94.9 weight percent of a C.sub.1 -C.sub.4 aliphatic alcohol. The composition may be applied to a variety of work surfaces such as work benches and kitchen counters, particularly porous surfaces such as slate, wood, vinyl, tile and rubber, wiped thereon and the surface allowed to dry.

Liquid hard surface cleaner for porous surfaces

The invention relates to cementitious compositions having improved fluidity and dispersability and to a method for producing same. For the present invention an ester derived from a polyoxyethylene glycol and a polycarboxylic acid, e.g. polymeric fatty acids or polycarboxylic adduct acids, is included with the cement, aggregate, water and any other additives which may be present. The esters can be partial esters or the polycarboxylic acids may be fully esterified with the polyoxyethylene glycol.

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Milford, OH, United States of America

Alan C Kilbarger