Patents by Inventor Arthur Topham
Arthur Topham 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: 6368669Abstract: A blocked polyisocyanate of the formula R—Ym where R is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue; each Y, which may be the same or different, is where R1 is, or, when n is more than 1, each R1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO2, halogen or group where R2 is a C1-C4 alkyl group: n is 0, 1, 2 or 3, and m is an integer greater than 1 is useful in paint compositions.Type: GrantFiled: June 6, 1995Date of Patent: April 9, 2002Assignee: The Baxenden Chemical Co.Inventors: Anthony H Hughes, Arthur Topham
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Patent number: 5986033Abstract: A blocked polyisocyanate of the formulaR--Y.sub.mwhere R is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue;each Y, which may be the same or different, is ##STR1## where R.sub.1 is, or, when n is more than 1, each R.sub.1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenol, NO.sub.2, halogen or ##STR2## group where R.sub.2 is a C.sub.1 -C.sub.4 alkyl group; n is 0, 1, 2 or 3; andm is an integer greater than 1 is useful in paint compositions.Type: GrantFiled: May 4, 1995Date of Patent: November 16, 1999Assignee: The Baxenden Chemical Co.Inventors: Anthony H Hughes, Arthur Topham
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Patent number: 5352755Abstract: A blocked polyisocyanate of the formulaR--Y.sub.mwhere R is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue;each Y, which may be the same or different, is ##STR1## where R.sub.1 is, or, when n is more than 1, each R.sub.1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen or ##STR2## group where R.sub.2 is a C.sub.1 -C.sub.4 alkyl group; n is 0, 1, 2 or 3; andm is an integer greater than 1 is useful in paint compositions.Type: GrantFiled: June 23, 1993Date of Patent: October 4, 1994Assignee: The Baxenden Chemical Co.Inventors: Anthony H. Hughes, Arthur Topham
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Patent number: 5246557Abstract: A blocked polyisocyanate of the formulaR--Y.sub.mwhereR is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue;each Y, which may be the same or different, is ##STR1## where R.sub.1 is, or, when n is more than 1, each R.sub.1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen or ##STR2## group where R.sub.2 is a C.sub.1 -C.sub.4 alkyl group; n is 0, 1, 2 or 3; andm is an integer greater than 1 is useful in paint compositions.Type: GrantFiled: August 19, 1992Date of Patent: September 21, 1993Assignee: The Baxenden Chemical Co.Inventors: Anthony H. Hughes, Arthur Topham
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Patent number: 4976837Abstract: A blocked polyisocyanate of the formulaR-Y.sub.mwhere R is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue;each Y, which may be the same or different, is ##STR1## where R.sub.1 is, or, when n is more than 1, each R.sub.1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen or ##STR2## group where R.sub.2 is a C.sub.1 -C.sub.4 alkyl group; n is 0, 1, 2 or 3; andm is an integer greater than 1 is useful in paint compositions.Type: GrantFiled: August 1, 1986Date of Patent: December 11, 1990Assignee: The Baxenden Chemical Co.Inventors: Anthony H. Hughes, Arthur Topham
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Patent number: 4518435Abstract: A dispersing agent comprising the salt of a tertiary amine containing at least one poly(lower alkyleneoxy) chain and an aromatic acid having at least two benzene rings and a dispersion of an organic pigment, an organic dyestuff or carbon black in a polar organic solvent containing said dispersing agent is disclosed.Type: GrantFiled: January 18, 1983Date of Patent: May 21, 1985Assignee: Imperial Chemical Industries LimitedInventors: James F. Stansfield, James Toole, Arthur Topham
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Patent number: 4398955Abstract: A dispersion of a particulate solid in a polar organic medium in the presence of a dispersing agent which is a tertiary amine or a salt thereof with a mineral acid or an aromatic carboxylic or sulphonic acid, the amine containing at least one polymeric group which is a poly(lower alkylene oxy) chain or a poly(carbonyl lower alkylene oxy) chain and inks, paints and similar formulations made from such a dispersion.Type: GrantFiled: June 23, 1981Date of Patent: August 16, 1983Assignee: Imperial Chemical Industries PLCInventors: James F. Stansfield, James Toole, Arthur Topham
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Dispersing agents, dispersions containing these agents and paints and inks made from the dispersions
Patent number: 4224212Abstract: Dispersing agents comprising a poly(lower alkylene)imine chain to which are attached at least two polyester chains by means of salt and/or amide links and the use of these agents in the preparation of dispersions of solids, particularly dyestuffs and pigments, in organic liquids.Type: GrantFiled: June 28, 1978Date of Patent: September 23, 1980Assignee: Imperial Chemical Industries LimitedInventor: Arthur Topham -
Patent number: 4166066Abstract: Dispersing agents comprising the adducts of one or more compounds from each of the following classes:(a) an organic compound containing two or more isocyanate groups,(b) an organic compound containing two or more groups which are reactive with isocyanate groups, and(c) a compound of the formula:Z--X--E(T--D).sub.n-1 QwhereinZ represents --OH or --NHR, wherein R is alkyl;X is optionally substituted alkylene;T is alkylene;N is a positive integer;Q is optionally substituted alky;And E is a ##STR1## group wherein R' is hydrogen or alkyl, and D is a ##STR2## group provided that only one of E and D is connected to T via the carbon atom of the carbonyl group present in D and E, and at least one of the group represented by X, T, Q, R and R.sup.1 contains a carbon chain having more than 4 carbon atoms, a process for the manufacture of the said dispersing agents, and their use in the preparation of finely divided dispersions of solids in organic liquids.Type: GrantFiled: August 31, 1976Date of Patent: August 28, 1979Assignee: Imperial Chemical Industries LimitedInventors: Frank Hauxwell, James F. Stansfield, Arthur Topham
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Patent number: 4163749Abstract: Dispersing agents comprising the adducts of one or more compounds from each of the following classes:(a) an organic compound containing two or more isocyanate groups,(b) an organic compound containing two or more groups which are reactive with isocyanate groups, and(c) a compound of the formula:Z--X--E (T--D).sub.n-1 QwhereinZ represents --OH or --NHR, wherein R is alkyl;X is optionally substituted alkylene;T is alkylene;N is a positive integer;Q is optionally substituted alkyl; andE is a ##STR1## group wherein R' is hydrogen or alkyl, and D is a ##STR2## group provided that only one of E and D is connected to T via the carbon atom of the carbonyl group present in D and E, and at least one of the group represented by X, T, Q, R and R.sup.1 contains a carbon chain having more than 4 carbon atoms, a process for the manufacture of the said dispersing agents, and their use in the preparation of finely divided dispersions of solids in organic liquids.Type: GrantFiled: November 25, 1974Date of Patent: August 7, 1979Assignee: Imperial Chemical Industries LimitedInventors: Frank Hauxwell, James F. Stansfield, Arthur Topham
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Patent number: 4157266Abstract: Dispersing agents comprising the adducts of one or more compounds from each of the following classes:(a) an organic compound containing two or more isocyanate groups,(b) an organic compound containing two or more groups which are reactive with isocyanate groups, and(c) a compound of the formula:Z--X--E--T--D).sub.Type: GrantFiled: September 29, 1976Date of Patent: June 5, 1979Assignee: Imperial Chemical Industries LimitedInventors: Frank Hauxwell, James F. Stansfield, Arthur Topham
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Patent number: 4129455Abstract: Compositions of matter comprising a finely divided dispersion of a solid having a particle size of less than 20 microns in an organic liquid selected from the class consisting of hydrocarbons and halogenated hydrocarbons containing dissolved therein an adduct of one or more compounds from each of the following classes(a) an organic compound containing two or more isocyanate groups,(b) an organic compound containing two or more groups which are reactive with isocyanate groups, and(c) an addition polymer containing a hydroxy group, the amount of the adduct corresponding to between 5% and 100% by weight based on the weight of the solid, and the amount of the solid corresponding to between 5% and 70% by weight based on the total weight of the dispersion for use in the preparation of inks and paints.Type: GrantFiled: May 7, 1976Date of Patent: December 12, 1978Assignee: Imperial Chemical Industries LimitedInventors: Morice W. Thompson, Arthur Topham
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Patent number: 4125413Abstract: The present invention relates to a fluidizing agent which is a substituted ammonium salt of an N,N'-disubstituted diaminostilbene sulphonic acid wherein there is at least one organic radical containing at least 2 carbon atoms attached to the nitrogen atom of the substituted ammonium ion. The agent is useful for improving the fluidity of a dispersion of a polycyclic vat dye pigment in an organic liquid.Type: GrantFiled: May 9, 1977Date of Patent: November 14, 1978Assignee: Imperial Chemical Industries LimitedInventors: Peter K. Davies, James F. Stansfield, Arthur Topham
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Patent number: 4057436Abstract: This invention is concerned with dispersions of solids in organic liquids containing polymeric or resinous dispersing agents. The fluidity of such dispersions is greatly improved by the presence in the dispersions of a substituted ammonium salt of a colored acid wherein there are between 16 and 60 carbon atoms contained in at least 3 chains attached to the N-atom of the substituted ammonium ion. The dispersions are particularly useful for the preparation of ink and paints.Type: GrantFiled: September 15, 1975Date of Patent: November 8, 1977Assignee: Imperial Chemical Industries LimitedInventors: Peter Kingsley Davies, Leslie Richard Rogers, James Frederick Stansfield, Arthur Topham
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Patent number: 4042413Abstract: Dispersing agents comprising the adducts of one or more compounds from each of the following classes:- a) an organic compound containing two or more isocyanate groups, b) an organic compound containing two or more groups which are reactive with isocyanate groups, and c) a compound of the formula:Z -- X -- E -- T -- D--.sub.Type: GrantFiled: December 11, 1974Date of Patent: August 16, 1977Assignee: Imperial Chemical Industries LimitedInventors: Frank Hauxwell, James Frederick Stansfield, Arthur Topham
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Patent number: 4013687Abstract: Dyestuffs of the formulaeD--Z--O--OC--X--O).sub.y H].sub.nandD--Z--O--OC--X--O).sub.(y.sub.-1) COT].sub.nwherein D is the radical of an anthraquinone dyestuff which is attached to Z through a carbon atom of an aromatic ring present in D; Z is a divalent bridging group; n is a positive integer having a value of 1 to 4; X is a divalent saturated or unsaturated aliphatic radical containing at least 8 carbon atoms and in which there are at least 4 carbon atoms between the --CO-- and --O-- groups; T is a saturated or unsaturated aliphatic radical of from 8-20 carbon atoms and y is a positive number in the range 2-20 inclusive.A process for making the above dyestuffs and their use as dispersing agents in the stabilization of dispersions of finely divided solids.Type: GrantFiled: December 10, 1974Date of Patent: March 22, 1977Assignee: Imperial Chemical Industries LimitedInventors: Hugh Patrick Dryhurst Paget, Leslie Richard Rogers, James Kenneth Davenport Royle, James Frederick Stansfield, Arthur Topham
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Patent number: 3996059Abstract: A dispersing agent of the formula:Y.CO.ZRwherein Z is a divalent bridging group which is attached to the carbonyl group through an oxygen or nitrogen atom, R is a primary, secondary or tertiary amino group or a salt thereof with an acid, or a quaternary ammonium salt group, and Y is the residue of a polyester chain which together with the --CO-- group is derived from a hydroxycarboxylic acid of the formula:HO -- X -- COOHwherein X is a divalent saturated or unsaturated aliphatic radical containing at least 8 carbon atoms and in which there are at least 4 carbon atoms between the hydroxy and carboxylic acid groups, or from a mixture of such a hydroxycarboxylic acid and a carboxylic acid which is free from hydroxy groups, a process for the manufacture of the said agent and its use in the preparation of finely divided dispersions of solids in organic liquids.Type: GrantFiled: December 26, 1974Date of Patent: December 7, 1976Assignee: Imperial Chemical Industries LimitedInventors: James Frederick Stansfield, Arthur Topham