EP0099179A2
Expired / Lapsed
EP
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Particulate dispersions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1983-06-10
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Granted: —
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Expires: 2003-06-10
Abstract
Abstract A dispersion in an aqueous medium of an organic particulate solid substantially all the particles of which have a size less than 100 microns which dispersion contains a polymeric composition which is soluble in the aqueous medium and which comprises a copolymer of at least one hydrophobic monomer as herein defined and at least one hydrophilic monomer as herein defined.
Inventors
- 👤 Richard Buscall
- 👤 Terence Corner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 00:33
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/009; C09K; C09K23/00; C09K23/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
64 words
A dispersion in an aqueous medium of an organic particulate solid substantially all the particles of which have a size less than 100 microns which dispersion contains a polymeric composition which is soluble in the aqueous medium characterised in that the polymeric composition comprises a copolymer of at least one hydrophobic monomer as hereinbefore defined and at least one hydrophilic monomer as hereinbefore defined.
Claim 2
Dependent Claim
64 words
A dispersion in an aqueous medium of an organic particulate solid substantially all the particles of which have a size less than 100 microns which dispersion contains a polymeric composition which is soluble in the aqueous medium characterised in that the polymeric composition comprises a copolymer of at least one hydrophobic monomer as hereinbefore defined and at least one hydrophilic monomer as hereinbefore defined.
Claim 3
Dependent Claim
39 words
A dispersion as claimed in Claim 1 wherein the at least one hydrophobic monomer provides less than 20% by weight of the copolymer, and the at least one hydrophilic monomer provides more than 80% by weight of the copolymer.
Claim 4
Dependent Claim
22 words
A dispersion as claimed in Claim 1 wherein the at least one hydrophilic monomer contains an acidic group and/or a salt thereof.
Claim 5
Dependent Claim
18 words
A dispersion as claimed in Claim 3 wherein the acidic group is a carboxylic and/or a sulphonic acid.
Claim 6
Dependent Claim
43 words
A dispersion as claimed in Claim 4 wherein the carboxylic acid is a mono- olefinic carboxylic acid having the general formula wherein R O is a substituent selected from the class consisting of hydrogen, halogen, cyano, alkyl, aryl aralkyl, alkaryl or cycloaliphatic groups.
Claim 7
Dependent Claim
14 words
A dispersion as claimed in Claim 5 wherein the carboxylic acid is acrylic acid.
Claim 8
Dependent Claim
60 words
A dispersion as claimed in Claim 1 wherein the at least one hydrophobic monomer is selected from the class consisting of long chain alkyl, containing 12 to 18 carbon atoms, or aryl esters of an acrylic or C 1-5 -alkacrylic acid; vinyl esters of long chain alkanoic acids having 6-30 carbon atoms; and vinyl aromatic compounds and vinyl-ended macromers thereof.
Claim 9
Dependent Claim
28 words
A dispersion as claimed in Claim 7 wherein the said hydrophobic monomer is lauryl methacrylate, a-methyl-styrene, vinyl stearate, a-methyl-styrene macromer, a 1- or 2- napththyl methacrylate, or vinylnaphthalene.
Claim 10
Dependent Claim
18 words
A dispersion as claimed in Claim 1 wherein the organic particulate solid is an organic pigment or dye.
Claim 11
Dependent Claim
20 words
A dispersion as claimed in Claim 9 wherein the dye is a reactive dye as defined in the Colour Index.
Claim 12
Dependent Claim
16 words
A dispersion as claimed in Claim 1 wherein the aqueous medium comprises a concentrated electrolyte solution.
Claim 13
Dependent Claim
13 words
A dispersion as claimed in Claim 11 wherein the electrolyte is sodium chloride.
Claim 14
Dependent Claim
76 words
A polymeric composition which comprises a copolymer prepared from at least one hydrophobic monomer and at least one hydrophilic monomer characterised in that the at least one hydrophobic monomer comprises an aryl ester of an acrylic or C 1- 5 -alkacrylic acid, a vinyl ester of a C 6-30 -alkaloic acid, a vinyl aromatic compound or a macromer derived therefrom, or an alkyl, aryl, alkaryl or aralkyl ester of an olefinically unsaturated C 6-30 -carboxylic acid.
Claim 15
Dependent Claim
76 words
A polymeric composition which comprises a copolymer prepared from at least one hydrophobic monomer and at least one hydrophilic monomer characterised in that the at least one hydrophobic monomer comprises an aryl ester of an acrylic or C 1- 5 -alkacrylic acid, a vinyl ester of a C 6-30 -alkaloic acid, a vinyl aromatic compound or a macromer derived therefrom, or an alkyl, aryl, alkaryl or aralkyl ester of an olefinically unsaturated C 6-30 -carboxylic acid.
Claim 16
Dependent Claim
60 words
A process for the production of a free-flowing powder which comprises an organic dye or pigment which process comprises at least the step of evaporating to dryness a dispersion of the organic pigment or dye in an aqueous medium containing as dispersing agent a copolymer which comprises moieties from at least one hydrophobic monomer and at least one hydrophilic monomer.
Claim 17
Dependent Claim
60 words
A process for the production of a free-flowing powder which comprises an organic dye or pigment which process comprises at least the step of evaporating to dryness a dispersion of the organic pigment or dye in an aqueous medium containing as dispersing agent a copolymer which comprises moieties from at least one hydrophobic monomer and at least one hydrophilic monomer.
References Cited (Backward Citations)
No citation records indexed.
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