Claims
- 1. A stable, aqueous pesticide dispersion composition comprising:
- (a) a water insoluble pesticide;
- (b) A polyoxyalkylene copolymer having surface active properties, said copolymer having the formula
- Y[EO,PO).sub.m (PO).sub.m (EO,PO).sub.m,H].sub.m
- wherein Y is the nucleus of an organic reactive hydrogen compound having x reactive hydrogen atoms and up to 6 carbon atoms, x is an integer, EO is ethylene oxide, PO is a propylene oxide hydrophobe having an oxygen/carbon ratio of not more than 0.04, (EP,PO) represents a hydrophilic heteric block having an oxygen/carbon ratio of more than 0.40, m, m' and n are numbers such that the total molecular weight of said hydrophilic heteric block is from about 660 to 4,400, the total molecular weight of said PO hydrophobe is from about 1600 to 3600 and the total molecular weight of said copolymer ranges from about 2200 to 800, said copolymer being about 30 to 55 weight percent hydrophilic with said hydrophilic heteric block comprising from about 5 to 40 weight percent of PO; and
- (c) water, wherein said composition has at least one improved property elected from the group consisting of viscosity, pour out residue, spontaneity, separation, reconstitution, percent suspensibility, zeta potential, and ten inversion foam height, as compared with said composition not having copolymer (b).
- 2. The aqueous pesticide dispersion composition as claimed in claim 1, wherein said water insoluble pesticide is selected from the group consisting of 2,2-bis(p-methoxyphenyl)-1,1,1-trichloroethane, 2-chloro-2',6'-diethyl-N-(methoxymethyl) acetanilide; a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine; N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine; 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-trazine; 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea; 3-(3,4-dichlorophenyl)-1,1-dimethylurea; 1-naphthyl-N-methylcarbamate, and mixtures thereof.
- 3. The aqueous pesticide dispersion composition as claimed in claim 1, wherein said heteric hydrophilic block comprises from about 7 to 40 weight percent of PO.
- 4. The aqueous pesticide dispersion composition as claimed in claim 1, wherein said water insoluble pesticide is present in said composition in an amount of about 45% by weight.
- 5. The aqueous pesticide dispersion composition as claimed in claim 4, wherein said copolymer is present in said composition in an amount of about 5% by weight.
- 6. The aqueous pesticide dispersion composition as claimed in claim 2, further comprising one or more preservatives.
Parent Case Info
This is a continuation-in-part of copending application(s) Ser. No. 07/494,028 filed on Mar. 5, 1990, now abandoned.
US Referenced Citations (8)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
494028 |
Mar 1990 |
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