Agrochemical dispersants
AssigneeIndorama Ventures Oxides LLC
InventorAlan J. STERN
Life of this patent
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Abstract
The present disclosure provides a dispersant obtained from the reaction of a styrene maleic anhydride and a monofunctional polyalkylene glycol. The dispersant may be combined with a pesticide and water to form an aqueous agricultural composition.
Claims16
A dispersant obtained from the reaction of a styrene maleic anhydride copolymer having a styrene to maleic anhydride molar ratio of at least 4.0:1.0 and a monofunctional polyalkylene glycol of the formula (1):
- R1O—(CpH2pO)z—[(EO)b-(AO)c]—H (1)
- where R1 is an alkyl group or aromatic group;
- p is 2 or 3;
- z is 0, 1, 2, or 3;
- EO is ethyleneoxy;
- AO is alkyleneoxy;
- b is an integer in the range from 0 to 100;
- c is an integer in the range from 0 to 100;
- and where at least one of b or c is greater than zero.
A process for forming a dispersant comprising dissolving a styrene maleic anhydride copolymer having a styrene to maleic anhydride molar ratio of at least 4.0:1.0 in a non-reactive solvent and reacting the mixture with a monofunctional polyalkylene glycol of the formula (1):
- R1O—(CpH2pO)z—[(EO)b-(AO)c]—H (1)
- where R1 is an alkyl group or aromatic group;
- p is 2 or 3;
- z is 0, 1, 2, or 3;
- EO is ethyleneoxy;
- AO is alkyleneoxy;
- b is an integer in the range from 0 to 100;
- c is an integer in the range from 0 to 100;
- and where at least one of b or c is greater than zero.
-18. (canceled)
Dependencies are inferred from the claim text.