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  Polyether polyesters having anionic functionalityUSPTO Application #: 20060030491Title: Polyether polyesters having anionic functionality Abstract: Polyester compositions and methods of producing and using same are provided. The polyester compositions at least include an anionic diacid monomer or diester monomer thereof and a polyether. The polyester compositions of the present invention can be effectively utilized, for example, to treat crude oil during production and refinery processing. (end of abstract) Agent: Nalco Company Patent & Licensing Department - Naperville, IL, US Inventor: Carl W. Hahn USPTO Applicaton #: 20060030491 - Class: 507219000 (USPTO) Related Patent Categories: Earth Boring, Well Treating, And Oil Field Chemistry, Well Treating, Contains Organic Component, Organic Component Is Solid Synthetic Resin The Patent Description & Claims data below is from USPTO Patent Application 20060030491. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This is a divisional of Ser. No. 10/350,462 filed Jan. 24, 2003. BACKGROUND OF THE INVENTION [0002] The present invention relates generally to polyester compositions. More specifically, the present invention relates to polyether polyesters with an anionic functionality and methods of producing and using same. [0003] In the production of oil from oil wells, the produced fluids frequently include water in the form of free water or emulsion. In general, it is necessary to reduce the water content in order to obtain pipeline quality oil. For example, a water content of less than 1.0% in the produced fluids is typically required. [0004] A variety of mechanical, electrical, and chemical processes are known and used to dehydrate oil well produced fluids and/or refined or processed portions thereof. With respect to chemical applications, demulsifiers can be employed. In general, a demulsifier is considered a single or a blend of surfactant compounds in a suitable solvent system which is formulated to treat a particular emulsion on an optimum cost/performance basis. [0005] The demulsifier acts to separate oil and water, and thus the produced fluid can be more readily dehydrated to specified levels. This makes the oil well produced fluid better suited for transportation via a pipeline as previously discussed. Further, salt content can be lowered in oil refining by a renewed formation of an emulsion with fresh water and demulsification before distillation. In this regard, a salt content in crude oil that is too high can be problematic. For example, this can cause problematic levels of corrosion during refining. [0006] A variety of demulsifiers are known. Typically, demulsifiers are, in general, derived from alcohols, fatty acids, fatty amines, glycols and alkylphenol formaldehyde condensation products. [0007] A need, therefore, exists to provide improved compositions that are capable of treating crude oil to facilitate the production and refinery processing of same, such as breaking emulsions within the crude oil in order to facilitate dehydration thereof. SUMMARY OF THE INVENTION [0008] The present invention relates generally to polyester compositions. In particular, the present invention relates to polyesters that are composed of polyethers and an anionic functionality. The compositions of the present invention can be effectively utilized in a number of different applications, particularly as applied to crude oil processes. [0009] In general, the polyester compositions of the present invention at least include a polyether and an anionic diacid monomer. In this regard, the compositions of the present invention are, in general, water soluble or water dispersible. This makes the compositions particularly suited as demulsifiers, viscosity reducers and/or emulsion modifiers during crude oil production and/or refinery processes. [0010] The polyether and anionic diacid monomer can include a number of suitable and different materials. In an embodiment, the polyether includes poly(tetrahydrofuran), poly(ethylene glycol), poly(propylene glycol), poly(butylene glycol), copolymers thereof including block copolymers thereof, the like and combinations thereof. The anionic diacid monomer and diester monomers thereof can include, for example, dimethyl 5-sulfoisophthalate, sulfosuccinic acid, 4-sulfophthalic acid, sulfonaphthalic acid, the like, salts thereof including alkali salts, anhydrides thereof and combinations thereof. [0011] In an embodiment, the present invention provides an oil-treatment agent. The oil-treatment agent includes a polyester compound composed of a polyether and an anionic diacid monomer. [0012] In another embodiment, the present invention provides a method of producing a polyester composition capable of treating oil. The method includes processing a number of ingredients including a polyether and an anionic diacid monomer, thereby forming the polyester composition. [0013] In yet another embodiment, the present invention provides a method of treating oil. The method includes providing a treatment agent that includes a polyester composed of a polyether and an anionic diacid monomer; and adding an effective amount of the treatment agent to oil. [0014] An advantage of the present invention is to provide improved polyester compositions. [0015] Another advantage of the present invention is to provide methods of producing and using improved polyester compositions. [0016] Yet another advantage of the present invention is to provide improved polyester polyethers having an anionic functionality that can be effectively employed to treat oil. [0017] Yet still another advantage of the present invention is to provide improved polymeric compositions that can be effectively utilized to dehydrate crude oil during production and refinery processing. [0018] Additional features and advantages of the present invention are described in, and will be apparent from, the following Detailed Description of the Invention. DETAILED DESCRIPTION OF THE INVENTION [0019] The present invention relates generally to polymeric compositions. More particularly, the present invention relates to polyester compositions that have an anionic functionality. It should be appreciated that the compositions of the present invention can be effectively utilized in a number of different applications, particularly as applied to crude oil processes. [0020] In an embodiment, the polyester compositions of the present invention at least include a polyether and an anionic diacid monomer. In general, the compositions are water soluble or water dispersible. This makes the compositions particularly well-suited as demulsifiers, viscosity reducers and/or emulsion modifiers during crude oil production and/or refinery processes. Continue reading... Full patent description for Polyether polyesters having anionic functionality Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Polyether polyesters having anionic functionality patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Polyether polyesters having anionic functionality or other areas of interest. ### Previous Patent Application: Method of cultivating potato in an increased yield Next Patent Application: Reversible gelling system and method using same during well treatments Industry Class: Earth boring, well treating, and oil field chemistry ### FreshPatents.com Support Thank you for viewing the Polyether polyesters having anionic functionality patent info. IP-related news and info Results in 1.04075 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf |
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