HERBICIDAL COMPOSITIONS
Crystal growth of cloquintocet mexyl hydrate is inhibited by polymeric carboxylate compounds.
1 . A method of reducing crystal growth of cloquintocet mexyl hydrate formed when a composition containing cloquintocet mexyl is exposed to water which comprises incorporating into the composition containing cloquintocet mexyl a crystal-growth inhibiting amount of a polymeric carboxylate having a molecular weight of about 500 to about 70,000 grams per mole.
2 . The method of claim 1 in which the weight ratio of polymeric carboxylate to cloquintocet mexyl is from about 1:100 to about 1:0.001.
3 . The method of claim 2 in which the weight ratio of polymeric carboxylate to cloquintocet mexyl is from about 1:10 to about 1:0.1.
4 . The method of claim 1 in which the polymeric carboxylate is an alkali metal salt of a polyacrylic or polymethacrylic acid.
5 . The method of claim 1 in which the polymeric carboxylate is the sodium salt of a copolymer of maleic anhydride and 2,4,4-trimethylpentene (CAS 37199-81-8).