| 摘要 |
<p>Stable pesticidal oil-in-water concentrate free flow thickness consists of 1-50 wt% alpha-cyano-3-phenoxybenzyl 2-(2-chloro-4-trifluoromethylphenylamino -3- methylbutanoate (I) of mean particle size less then 1 micron, 2-20 wt% polyvinyl alcohol of mol.wt. 2,000-125,000 and having 11-28% of its hydroxy gps. acetylated and the residue of the compsn. being water. - (I) known as fluvalinate is a synthetic pyrethroid for controlling insects and acarides. The composition is freeze-thaw stable, storage stable at 5 deg.C and water dispersible and because it does not contain organic solvents it does not irritate eyes and skin. EPAB- EP-111580 B A stable pesticidal oil-in-water emulsion concentrate consisting essentially of : (a) 1 to 50% by wt. of an active ingredient selected from fluvalinate, permethrin, cypermethrin, deltamethrin, fenpropathring and fenvalerate, in optical isomer or racemic mixt. form, dispersed as particles having an ave. size less than 1 micron; (b) 4 to 20% by wt. of polyvinyl alcohol having a molecular wt. of from 2000 to 125000 and having 11 to 28% of this hydroxy gps. present as the acetate ester; (c) 0.1 to 8% by wt. of surfactant selected from anionic surfactants, non-ionic surfactants, amphoteric surfactants, cationic surfactants and mixts. thereof; (d) 4.8 to 20% by wt. of a member selected from the gp. of freeze-thaw stabilisers consisting of ethylene glycol, propylene glycol and mixts. thereof; (e) the balance being water; and the emulsion being freeze-thaw stable, 50 degrees centrigrade storage stable, and water dispersable. (6pp) - EP-111580 B A stable pesticidal oil-in-water emulsion concentrate consisting essentially of : (a) 1 to 50% by wt. of an active ingredient selected from fluvalinate, permethrin, cypermethrin, deltamethrin, fenpropathring and fenvalerate, in optical isomer or racemic mixt. form, dispersed as particles having an ave. size less than 1 micron; (b) 4 to 20% by wt. of polyvinyl alcohol having a molecular wt. of from 2000 to 125000 and having 11 to 28% of this hydroxy gps. present as the acetate ester; (c) 0.1 to 8% by wt. of surfactant selected from anionic surfactants, non-ionic surfactants, amphoteric surfactants, cationic surfactants and mixts. thereof; (d) 4.8 to 20% by wt. of a member selected from the gp. of freeze-thaw stabilisers consisting of ethylene glycol, propylene glycol and mixts. thereof; (e) the balance being water; and the emulsion being freeze-thaw stable, 50 degrees centigrade storage stable, and water dispersible.</p> |
