Delivery system for agricultural chemicals

  • US 5,250,499 A
  • Filed: 10/31/1990
  • Issued: 10/05/1993
  • Est. Priority Date: 12/11/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A stable emulsifiable concentrate comprising an agricultural active chemical which is substantially insoluble in water, an organic diluent, a surfactant and a solvent composed of first and second components, said first component having a sufficiently high hydrophilic property and being present in an amount effective to solubilize the agriculturally active chemical and is selected from the group consisting of pyrrolidones having the formula ##STR4## wherein R is hydrogen or lower alkyl and R1 is lower alkyl, wherein lower alkyl is an alkyl group having from 1 to 4 carbon atoms, and the second component having an HLB value of from about 2 to 8 and being present in an amount, in conjunction with a surfactant, effective to disperse the agriculturally active chemical and is selected from the group consisting of pyrrolidones having a formula ##STR5## wherein R2 is hydrogen or alkyl having from 6 to 14 carbon atoms and R3 is alkyl having from 6 to 14 carbon atoms with the proviso that at least one of R2 or R3 must be contain at least 6 carbon atoms and the sum of the carbon atoms in R2 and R3 cannot exceed 14;

  • and combinations thereof, wherein the alkyl portion may be distributed at one or more sites on the ring so long as one portion contains at least 6 carbon atoms and the total number of alkyl carbon atoms does not exceed 14.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×