Patent US3873689A successfully refreshed from Google Patents.
US3873689A
Expired / Lapsed
US
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Evaporation inhibiting additive for concentrated dispersions of plant protection products
Assignee: Hoechst AG
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Filing: 1973-02-05
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Granted: 1975-03-25
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Expires: 1993-02-05
Abstract
Abstract Evaporation inhibiting additive for concentrated dispersions of plant protection products containing an aliphatic mineral oil, a defoamer, a non-ionic emulsifier and sodium oleylmethyltaurate and optionally an adhesive, a pigment and a polyalcohol.
Inventors
- 👤 Heinz Frensch
- 👤 Konrad Albrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:40
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/18; A01N25/02; A01N25/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
198 words
AN EVAPORATION INHIBITING ADDITIVE FOR CONCENTRATED DISPERSIONS OF PLANT PROTECTION PRODUCTS WHICH COMPRISES: FROM 20 TO 60 PERCENT BY WEIGHT OF AN INDUSTRIAL GRADE ALIPHATIC HYDROCARBON MINERAL OIL HAING AT LEAST TWELVE CARBON ATOMS, A MAXIMUM CONTENT OF 15 PERCENT BY WEIGHT OF AROMATIC COMPOUNDS, AT LEAST 85 PERCENT RESIDUES WHICH CANNOT BE SULFONATED A VISCOSITY OF 3* TO 5* ENGLER AT 20*C AND A DISTALLATION END-POINT OF MORE THAN 400*C UNDER NORMAL PRESSURE FROM 1 TO 5 PERCENT BY WEIGHT OF TRI-ISONUTYL PHOSPHATE DEFOAMER, FROM 0 TO 5 PERCENT BY WEIGHT OF 55 PERCENT AQUEOUS POLYVINYL ACETATE DISPERSION ADHESIVE, FROM 0.5 TO 5 PERCENT BY WEIGHT OF A NONIONIC EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ALKYLPEHNYLPOLYAKOXYALKANONE, AN ISO-OCTYPHENYL-POLYGLYCOL ETHER, A TRI-ISOBUTYLPHENYL-POLYGLYCOL ETHER AN OLEYL-POLYGLYCOL ETHER, A FATTY ACID ESTER OF SORBITAN AND A POLYOXYETHYLENE DERIVATIVE OF SORBITAN ESTERS OF FATTY ACIDS SAID EMULSIFIER HAVING A HYDROPHILIC-LIPOPHILIC BALANCE VALUE OF FROM 10 TO 12, FROM 0.5 TO 2.5 PERCENT BY WEIGHT OF SODIUM SALT OF OLEYLMETHYLTAURIDE, FROM 0 TO 30 PERCENT BY WEIGHT TITANIUM DIOXIDE PIGMENT FROM 0 TO 40 PERCENT BY WEIGHT OF A WATER SOLUBLE POLYALCOHOL AND AT LEAST 10 PERCENT BY WEIGHT WATER.
Claim 2
Dependent Claim
198 words
AN EVAPORATION INHIBITING ADDITIVE FOR CONCENTRATED DISPERSIONS OF PLANT PROTECTION PRODUCTS WHICH COMPRISES: FROM 20 TO 60 PERCENT BY WEIGHT OF AN INDUSTRIAL GRADE ALIPHATIC HYDROCARBON MINERAL OIL HAING AT LEAST TWELVE CARBON ATOMS, A MAXIMUM CONTENT OF 15 PERCENT BY WEIGHT OF AROMATIC COMPOUNDS, AT LEAST 85 PERCENT RESIDUES WHICH CANNOT BE SULFONATED A VISCOSITY OF 3* TO 5* ENGLER AT 20*C AND A DISTALLATION END-POINT OF MORE THAN 400*C UNDER NORMAL PRESSURE FROM 1 TO 5 PERCENT BY WEIGHT OF TRI-ISONUTYL PHOSPHATE DEFOAMER, FROM 0 TO 5 PERCENT BY WEIGHT OF 55 PERCENT AQUEOUS POLYVINYL ACETATE DISPERSION ADHESIVE, FROM 0.5 TO 5 PERCENT BY WEIGHT OF A NONIONIC EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ALKYLPEHNYLPOLYAKOXYALKANONE, AN ISO-OCTYPHENYL-POLYGLYCOL ETHER, A TRI-ISOBUTYLPHENYL-POLYGLYCOL ETHER AN OLEYL-POLYGLYCOL ETHER, A FATTY ACID ESTER OF SORBITAN AND A POLYOXYETHYLENE DERIVATIVE OF SORBITAN ESTERS OF FATTY ACIDS SAID EMULSIFIER HAVING A HYDROPHILIC-LIPOPHILIC BALANCE VALUE OF FROM 10 TO 12, FROM 0.5 TO 2.5 PERCENT BY WEIGHT OF SODIUM SALT OF OLEYLMETHYLTAURIDE, FROM 0 TO 30 PERCENT BY WEIGHT TITANIUM DIOXIDE PIGMENT FROM 0 TO 40 PERCENT BY WEIGHT OF A WATER SOLUBLE POLYALCOHOL AND AT LEAST 10 PERCENT BY WEIGHT WATER.
Claim 3
Dependent Claim
32 words
The evaporation inhibiting additive of claim 1, wherein said mineral oil has at least 90 percent, residues which cannot be sulfonated and has a boiling point of about 180*C under normal pressure.
Claim 4
Dependent Claim
31 words
The evaporation inhibiting additive of claim 1 which contains from 10 to 25 percent by weight titanium dioxide powder pigment having a grain diameter of less than 3 to 5 microns.
Claim 5
Dependent Claim
20 words
The evaporation inhibiting additive of claim 1 which contains water in amounts of from 15 to 48 percent by weight.
Claim 6
Dependent Claim
21 words
The evaporation inhibiting additive of claim 1 which contains from 10 to 40 percent by weight of the water soluble polyalcohol.
Claim 7
Dependent Claim
90 words
A method of inhibiting the evaporation of water from concentrated aqueous dispersions of plant protection product spray liquors while spraying said liquors using the low volume or ultra low volume spray procedure which comprises adding from 0.5 to 2.0 liters of an evaporation inhibiting additive composition consisting essentially of the composition of claim 1 to an amount of 5 to 30 liters of said concentrated spray liquor and spraying the concentrated liquor on the plants to be protected at a rate of 0.5 to 5 or 5 to 15 liters/ha.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |