Abstract: A composition comprising particulate solid, an organic medium and a dispersant comprising a polyacrylic copolymer functionalized with a polyether and reacted with an aminic polybasic species.

Abstract: A polymeric polycarboxylic acid functionalized with polyether groups is disclosed as an additive to a lithium-ion battery to help improve properties such as energy density, cycle durability, or other durability issues.

Abstract: A composition comprising particulate solid, an organic medium and a dispersant comprising a polyacrylic copolymer functionalized with a polyether and reacted with an aminic polybasic species.

Abstract: The invention relates to a composition containing a particulate solid, plastic material (such as polyvinyl chloride), and a dispersant/agent comprising an oligomer from polymerizing a C7-20 hydroxycarboxylic acid optionally with a C1-6 hydroxycarboxylic acid or its corresponding lactone form.

Abstract: The invention relates to a composition containing a particulate solid, an organic medium, and a (meth)acrylic polymer. The invention further relates to novel compounds, and the use of the (meth)acrylic polymer as a dispersant, typically a pigment dispersant.

Abstract: The invention relates to a composition containing a particulate solid, an organic medium, and a (meth)acrylic polymer. The invention further relates to novel compounds, and the use of the (meth)acrylic polymer as a dispersant, typically a pigment dispersant.

Abstract: The invention relates to a composition containing a particulate solid, plastic material (such as polyvinyl chloride), and a dispersant/agent comprising an oligomer from polymerizing a C7-20 hydroxycarboxylic acid optionally with a C1-6 hydroxycarboxylic acid or its corresponding lactone form.

Abstract: The invention relates to a composition containing a particulate solid, plastic material (such as a vinyl chloride polymer), and a compound containing an acidic group.

Abstract: A surfactant comprising a carboxylic acid ester or amide carrying a terminal strong acid group selected from carboxymethyl, sulphate, sulphonate, phosphate and phosphonate, suitable for stabilising dispersions of solids in organic liquids and oil/water emulsions, processes for the preparation of the surfactant and dispersions and emulsions containing the surfactant. A preferred species of the surfactant is a poly(hydroxyalkanecarboxylic acid) having the strong acid group attached, either directly or through a linking group, to a terminal hydroxy or carboxylic acid group.

Abstract: A process for the manufacture of an azo metal salt pigment, wherein a transparent or translucent alkaline aqueous solution of a resin and a dispersant of formula (1) or formula (3) is added to an azo compound, said formula (1) beingYCO--OM (1)whereinYCO is the residue of a polyester derived from a hydroxycarboxylic acid, andM is H, a metal or optionally substituted ammonium, and said formula (3) beingYCO--Z--R (3)whereinZ is a divalent bridging group containing an oxygen or a nitrogen atom through which Z is attached to the carbonyl groupR is a primary, secondary or tertiary amino group or a salt thereof with an acid, or a quaternary ammonium salt group, andYCO is as herein defined.

Abstract: A surfactant comprising a carboxylic acid ester or amide carrying a terminal strong acid group selected from carboxymethyl, sulphate, sulphonate, phosphate and phosphonate, suitable for stabilising dispersions of solids in organic liquids and oil/water emulsions, processes for the preparation of the surfactant and dispersions and emulsions containing the surfactant. A preferred species of the surfactant is a poly(hydroxyalkanecarboxylic acid) having the strong acid group attached, either directly or through a linking group, to a terminal hydroxy or carboxylic acid group.

Abstract: A finely-divided ceramic solid dispersion of low viscosity is obtained using as a dispersant an organic compound containing at least one carbonyl C-17-alkyleneoxy group, for example a derivative of 12-hydroxystearic acid or ricinoleic acid or low molecular weight polymeric derivative thereof. The composition may be dry or may be dispersed in an organic medium such as an aliphatic or aromatic hydrocarbon.

Abstract: A composition comprising a finely-divided non-magnetic solid and a dispersant comprising a poly(C.sub.2-4 -alkyleneimine) carrying at least two mono- or poly-(carbonyl-C.sub.1-7 -alkyleneoxy) groups, a dispersion of the composition in an organic medium and a dispersant comprising a poly(C.sub.2-4 -alkyleneimine) carrying at least two carbonyl- C.sub.1-7 -alkyleneoxy groups.

Abstract: A composition comprising a dispersion of a finely divided particulate solid in a thermoplastic polymeric organic medium in the presence of a lubricant and a processing additive in which the processing additive comprises an organic compound containing at least one group of the formula:--O--A--CO--wherein A is a divalent aliphatic radical containing 17 carbon atoms, at least 4 of which are directly between the oxygen atom and the carbonyl group.The composition is suitable for blending a particulate solid into a polymer.

Abstract: A dispersion of finely divided particles of a magnetic material in an organic liquid containing a dispersant comprising an amine carrying a poly(carbonylalkyleneoxy) chain (PCAO chain) in which the alkylene groups contain up to 8 carbon atoms, or an acid-salt thereof. The dispersion is useful for the preparation of magnetic recording media such as video, audio and computer recording tapes and discs. Certain of the dispersants are novel, especially a polyethyleneimine carrying at least two PCAO chains.

Abstract: An agent for enhancing the fluidity of pigment dispersions comprising a composition of disazo compounds containing a water-insoluble disazo compound in which one of the terminal aromatic groups carries a single substituted ammonium-acid salt group, pigments treated with the agent and non-aqueous pigment dispersions containing the agent.

Abstract: A dispersible inorganic pigment composition in which the surface of a finely divided inorganic pigment is coated with a substance which renders the surface hydrophobic and then with a thermoplastic polymer and a process for the preparation of the composition. The composition is readily dispersible in thermoplastics and paints and it can be used to color thermoplastic materials directly, avoiding the preparation of a master batch.