Pfizer Corporation

Divina V. Sarges

David J. Sprott

Christopher A. Macri

James W. Miller

James W Miller

Ping W Chang

Christopher A Macri

Bryce E Tate

James M Anderson

Divina V Sarges

Fu-Ning Fung

William C Wernau

Michael Torrey Wuesthoff

John J O'Neill

Donald Beck

Thomas B Young, Iii

A browning composition is prepared by mixing an oil phase containing an emulsifier with an aqueous phase containing a colorant under shear conditions to form a dispersion of the aqueous phase in the oil phase.

Process for preparing a browning composition

There is disclosed a low calorie fat substitute comprising an emulsion containing a non-flowable aqueous phase, an oil phase and a fat extender. Also disclosed are low calorie fat substitutes wherein the fat or oil is replaced by a fat mimetic.

Low-calorie fat substitute

There is disclosed a browning composition for uncooked foods comprising a colorant and a fat or an oil. Also disclosed is a process for imparting a brown color to cooked foods by using the composition of the present invention on foods cooked, for example, in a microwave oven.

Browning composition and process for browning foods

A drilling fluid additive comprises high pyruvate xanthan and locust bean gum in a weight ratio of about 40:60 to 80:20. The additive increases the viscosity of the drilling fluid at low shear, has improved thermal stability, and increases the capacity of the fluid to suspend high density weighting materials.

Drilling fluid additive containing high pyruvate xanthan

Biopolymers comprising xanthomonas and methylene bis (thiocyanate) are disclosed.

Biopolymer compositions having enhanced filterability

A stable xanthan solution with superior filterability and subterranean injectivity characteristics comprising biopolymer and a chelating agent selected from aliphatic alpha-hydroxy acids having from about 2-7 carbon atoms; aliphatic and aromatic beta-keto compounds having from about 4-9 carbon atoms; or 2- and 4-pyrones having a hydroxyl group alpha to the carbonyl and having 5 or 6 carbon atoms; said chelating agent being present in an amount of at least about 1.0 ppm of the total solution. A method of enhancing oil recovery comprising employing as a mobility control solution in oil-bearing formations a mixture of xanthan biopolymer and a chelating agent is also disclosed.

Polyvalent metal ion chelating agents for xanthan solutions

An aqueous mobility control solution for tertiary oil recovery from saline oil fields comprises from about 200 to 2000 ppm xanthan biopolymer in the form of clean, unreconstituted fermentation broth and from about 20 to 200 ppm of a selected water-soluble polyglycol-based surfactant. A process for tertiary oil recovery which comprises the injection of the mobility control solution into saline oil-bearing subterranian formations is also disclosed.

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Ledyard, CT, United States of America

James W Miller