Patents by Inventor William A. Higgins
William A. Higgins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5047457Abstract: Modified asphalt compositions are described which comprise(A) asphalt, and(B) a minor effective amount, sufficient to improve the durability of the asphalt in service, of at least one hydrocarbon-soluble acrylate polymer of the formula ##STR1## wherein R.sup.1 is a lower alkyl group containing from 1 to about 4 carbon atoms, R.sup.2 is a mixture of alkyl groups containing from about 4 to about 20 carbon atoms, and x is an integer providing a weight average molecular weight (Mw) to the acrylate polymer of about 5000 to about 1,000,000.Generally, the modified asphalt compositions will contain from about 0.01 to about 10% by weight, based on the weight of the asphalt, of the acrylate polymer as defined. The modified asphalt compositions of the present invention are useful in roofing and in preparing aggregate-containing asphalt concretes which can be employed as paving compositions.Type: GrantFiled: January 25, 1989Date of Patent: September 10, 1991Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4833184Abstract: Modified asphalt compositions are described which comprise(A) asphalt, and(B) a minor effective amount, sufficient to improve the durability of the asphalt in service, of at least one hydrocarbon-soluble acrylate polymer of the formula ##STR1## wherein R.sup.1 is a lower alkyl group containing from 1 to about 4 carbon atoms, R.sup.2 is a mixture of alkyl groups containing from about 4 to about 20 carbons atoms, and x is an integer providing a weight average molecular weight (Mw) to the acrylate polymer of about 5000 to about 1,000,000. Generally, the modified asphalt compositions will contain from about 0.01 to about 10% by weight, based on the weight of the asphalt, of the acrylate polymer as defined. The modified asphalt compositions of the present invention are useful in roofing and in preparing aggregate-containing asphalt concretes which can be employed as paving compositions.Type: GrantFiled: March 10, 1987Date of Patent: May 23, 1989Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4728578Abstract: The present invention relates to modified non-Newtonian colloidal disperse systems exhibiting improved thickening power, particularly when diluted. These compositions are useful as high-solids, thermosetting caulks, molding compositions, extruding compositions and the like, but are particularly suitable for use as high solids thermosetting coating compositions. These coating compositions are heat-stable and sag-resistant.The compositions of this invention comprise a mixture of(B) at least one non-Newtonian colloidal disperse system comprising(B-1) solid metal-containing colloidal particles,(B-2) a liquid dispersing medium, and(B-3) at least one organic compound which is soluble in said dispersing medium, the molecules of said organic compound being characterized by a hydrophobic portion and at least one polar substituent; and(C) at least one hydrogenated block copolymer of a vinyl aromatic monomer and an aliphatic conjugated diene.Type: GrantFiled: August 13, 1986Date of Patent: March 1, 1988Assignee: The Lubrizol CorporationInventors: William A. Higgins, John Bretz
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Patent number: 4620855Abstract: N-acylated aminohydrocarbyl sulfonic acids or acid derivative compositions are described which are characterized by the presence with the structure of at least one acyl, acylimidoyl or acyloxy group attached to the amino nitrogen, said groups being derived from at least one of the carboxylic acid groups contained in an interpolymer of (i) at least one vinyl aromatic monomer and (ii) at least one alpha, beta-unsaturated acid or derivative thereof. Aqueous systems also are described which comprise at least about 40% of water and the N-acylated amino hydrocarbyl sulfonic acid or salt composition of the invention. The hydrocarbyl sulfonic acid or salt compositions of the present invention are useful as emulsifiers, thickeners, dispersants, etc. in the aqueous systems, and the compositions also are useful as additives in fuels and lubricants.Type: GrantFiled: November 7, 1984Date of Patent: November 4, 1986Assignee: The Lubrizol Corp.Inventor: William A. Higgins
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Patent number: 4618450Abstract: Aqueous systems also are described which comprise at least about 40% of water and an N-acrylated amino hydrocarbyl sulfonic acid or salt composition characterized by the presence within the structure of an imido group or at least one acyl acyloxy or acylimidoyl group attached to the amino nitrogen, said groups being derived from the carboxylic acid groups contained in(a) maleic acid or anhydride, or(b) a hydrocarbyl-substituted polycarboxylic acid or anhydride.The amino hydrocarbyl sulfonic acid or salt compositions are useful as emulsifiers, thickeners, dispersants, etc. in the aqueous systems.Type: GrantFiled: November 7, 1984Date of Patent: October 21, 1986Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4600742Abstract: Carbonate polymer compositions are described which comprise a mixture of(A) an organic carbonate polymer, and(B) a minor amount of at least one metal sulfonate which is compatible with the carbonate polymer and which sulfonates are characterized by the formula ##STR1## wherein R is an aliphatic group,M is an alkali or alkaline earth metal,n is at least 1, andy is equal to 1 when M is an alkali metal and1/2 when M is an alkaline earth metal.The carbonate polymer compositions of the invention have improved properties such as, for example, flame-retardancy. Processes for improving the processability and flame-retardancy characteristics of carbonate polymer compositions also are described.Type: GrantFiled: August 17, 1984Date of Patent: July 15, 1986Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4520155Abstract: Polyolefin compositions are described which can be dyed by conventional dyeing techniques. Such polyolefins comprise a blend of (A) a polyolefin and (B) a dye-receptive amount of at least one metal sulfonate which is soluble in the polyolefin when melted, and which sulfonates are characterized by the formulae ##STR1## wherein R is an aliphatic group,R' is an aliphatic group containing at least about 8 carbon atoms,Ar is an aromatic group,M is an alkali or alkaline earth metal,n is at least 1,y is equal to 1 when M is an alkali metal and 1/2 when M is an alkaline earth metal, andx is equal to the valence of M.The preferred sulfonates are those represented by Formula (I) and especially wherein M is sodium. In particular, it has been found that films and fibers prepared from such polyolefin composition, and more particularly polypropylene compositions, are readily dyed with common dyes to provide deep shades and fastness.Type: GrantFiled: April 23, 1984Date of Patent: May 28, 1985Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4443577Abstract: A composition comprising: (A) a non-Newtonian colloidal disperse system comprising (1) solid metal-containing colloidal particles predispersed in (2) a disperse medium of at least one inert organic liquid and (3) as an essential third component at least one member selected from the class consisting of organic compounds which are substantially soluble in said disperse medium, the molecules of said organic compound being characterized by polar substituents and hydrophobic portions; and (B) an isocyanate-terminated prepolymer.Type: GrantFiled: May 12, 1982Date of Patent: April 17, 1984Assignee: The Lubrizol CorporationInventors: William A. Higgins, John S. Perz
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Patent number: 4439594Abstract: Curable compositions of matter comprising an epoxy resin and a curing agent selected from the group consisting of polyvalent metal salts of a phosphorodithioic acid, the acid being derived from the reaction of a phosphorus sulfide with a hydroxyl containing aromatic compound, and products derived from the reaction of the polyvalent metal salt with a mono- or polyamine.Type: GrantFiled: September 17, 1982Date of Patent: March 27, 1984Assignee: The Lubrizol CorporationInventors: William A. Higgins, Alan C. Clark
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Patent number: 4436855Abstract: The present invention contemplates the provision of two-component urethane coating compositions comprising a first component comprising an organic polyfunctional isocyanate, and a second component comprising an acidic ester of a phosphoric acid, the alcohol portions of said acidic acid being selected from the group consisting of hydrocarbyloxy and hydroxy-substituted hydrocarbyloxy compounds, such compositions providing enhanced corrosion resistance properties as well as improved flame retardency and metal adhesion characteristics over the two-component urethane systems of the prior art. An essential ingredient in the compositions of the invention is a non-Newtonian colloidal disperse system which can be provided with either the first component and/or the second component parts of the compositions of the invention.Type: GrantFiled: June 29, 1983Date of Patent: March 13, 1984Assignee: The Lubrizol CorporationInventors: William A. Higgins, John S. Perz
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Patent number: 4250042Abstract: Certain salts of polycarboxylic acids and amino compounds are useful as corrosion inhibitors in aqueous systems used in well-drilling operations. Typical such corrosion inhibitors are made from acids such as sebacic and azelaic acid and amino compounds such as ammonia, ethanol amine, di- and tri-ethanol amines and N,N-diethyl-ethanol amine.Type: GrantFiled: April 16, 1979Date of Patent: February 10, 1981Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4161566Abstract: Aqueous disperse compositions capable of irreversibly forming films, comprising an internal phase of at least one film-forming, non-asphaltic, oleaginous material and an external phase comprising a clay-thickened water slurry, containing, in addition to clay, a flocculating agent are disclosed. Typical film-forming materials are made by reacting a carboxylic acid with an overbased salt of an organic acid, particularly those that have been converted into non-Newtonian colloidal disperse systems such as an alkaline earth metal sulfonate gel. Typical clays are montmorillonite-type clays and usually the composition as a whole is thixotropic. These compositions are useful, for example, as coatings for preventing corrosion of metallic surfaces.Type: GrantFiled: June 22, 1978Date of Patent: July 17, 1979Assignee: The Lubrizol CorporationInventor: William A. Higgins
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Patent number: 4155859Abstract: Compositions suitable for use as forging lubricants, especially for hot forging, comprises an aliphatic or alicyclic organic diluent (preferably one which has a high flash point and a relatively high boiling point), graphite and non-Newtonian basic alkaline earth metal complex. The complex is preferably a grease-like or gel-like basic calcium or magnesium sulfonate or carboxylate, or mixture thereof. Basic magnesium sulfonate-carboxylates are especially preferred. These lubricants, when used in hot forging operations, are characterized by their ability to protect the forging die from welding, scoring or other deformation and by their relatively smokeless properties.Type: GrantFiled: January 19, 1978Date of Patent: May 22, 1979Assignee: The Lubrizol CorporationInventor: William A. Higgins