Dispersions
AssigneeLankem Ltd.
InventorsSean Graham Hodgkinson, John Adamson
Life of this patent
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Abstract
A dispersion comprising a solid particulate component such as a pigment, a dispersing agent and one or more solvents is disclosed. The dispersing agent comprises a reaction product of (a) an epoxidised carboxylic acid ester; (b) a compound including at least one reactive alcohol and/or amino functional group; and (c) a derivatising agent. Such a dispersion shows excellent long-term stability. A method of producing such a dispersion having long-term stability, and a use of the dispersing agent to provide a dispersion having long-term stability are also described.
Claims18
A liquid dispersion comprising:
- a solid particulate component;
- a dispersing agent;
- and
- one or more solvents;
- wherein the dispersing agent comprises a reaction product of:
- (a) an epoxidized carboxylic acid ester;
- (b) an alkoxylated compound including at least one reactive alcohol and/or amino functional group;
- and
- (c) a derivatizing agent selected from a hydrolysis agent, a compound including at least one reactive alcohol or amino functional group, or a sulfonating agent.
A method of producing a dispersion having long-term stability, the method comprising the steps of:
- (a) mixing together a dispersing agent and one or more solvents;
- and
- (b) adding a solid particulate component to form a dispersion;
- wherein the dispersing agent comprises a reaction product of:
- (i) an epoxidized carboxylic acid ester;
- (ii) an alkoxylated compound including at least one reactive alcohol and/or amino functional group;
- and
- (iii) a derivatizing agent selected from a hydrolysis agent, a compound including at least one reactive alcohol or amino functional group, or a sulfonating agent.
Dependencies are inferred from the claim text.