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US4770694A
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Aqueous biocide suspension
Assignee: Kao Corp
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Filing: 1982-03-10
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Granted: 1988-09-13
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Expires: 2002-03-10
Abstract
Abstract A water-insoluble biocide component can be effectively dispersed in water by using as a dispersant a phosphoric acid ester salt of a nonionic surfactant.
Inventors
- 👤 Tesuji Iwasaki
- 👤 Tsuneyuki Takeno
- 👤 Yukio Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:44
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/02; A01N25/04; A01N25/30; C; C09; C09K; C09K23/00; C09K23/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
145 words
An aqueous biocide suspension consisting essentially of (A) from 10 to 60 wt. % of at least one water-insoluble biocide, (B) from 0.2 to 20 wt. % of a phosphate ester salt of a nonionic surfactant having the formula ##STR4## wherein R' is a residue obtained by removing the terminal hydroxy group from a nonionic surfactant having the formula ##STR5## wherein R 1 is ##STR6## R 2 is a C 1 -C 4 alkyl group, R 3 is H or CH 3 , R is a C 2 -C 4 alkylene group, m is an integer of 1 to 3, n is an integer of 0 to 2, l is an integer of 1 to 40, and M is a counter-ion selected from the group consisting of alkali metal, alkaline earth metal, ammonium and alkanolamine, and (C) from 20 to 80 wt. % of water.
Claim 2
Dependent Claim
145 words
An aqueous biocide suspension consisting essentially of (A) from 10 to 60 wt. % of at least one water-insoluble biocide, (B) from 0.2 to 20 wt. % of a phosphate ester salt of a nonionic surfactant having the formula ##STR4## wherein R' is a residue obtained by removing the terminal hydroxy group from a nonionic surfactant having the formula ##STR5## wherein R 1 is ##STR6## R 2 is a C 1 -C 4 alkyl group, R 3 is H or CH 3 , R is a C 2 -C 4 alkylene group, m is an integer of 1 to 3, n is an integer of 0 to 2, l is an integer of 1 to 40, and M is a counter-ion selected from the group consisting of alkali metal, alkaline earth metal, ammonium and alkanolamine, and (C) from 20 to 80 wt. % of water.
Claim 3
Dependent Claim
35 words
An aqueous biocide suspension as claimed in claim 1, wherein said suspension additionally contains (D) from 0.01 to 5 wt. % of water-soluble tackifier, and (E) from 0 to 2 wt. % of anti-foaming agent.
Claim 4
Dependent Claim
28 words
An aqueous biocide suspension as claimed in claim 2, wherein said suspension contains 1 to 10 wt. % of (B) and 0.05 to 1 wt. % of (D).
Claim 5
Dependent Claim
35 words
An aqueous biocide suspension as claimed in claim 1, wherein said water-insoluble biocide is selected from the group consisting of herbicides, fungicides, insecticides, acaricides, and mixtures thereof, and is solid or paste-like at room temperature.
Claim 6
Dependent Claim
13 words
An aqueous biocide suspension as claimed in claim 1, wherein M is diethanolamine.
Claim 7
Dependent Claim
29 words
An aqueous biocide suspension as claimed in claim 1, wherein said nonionic surfactant is a polyoxyethylene tribenzylphenol ether phosphate diethanolamine salt or a polyoxyethylene phenylphenol ether phosphate diethanolamine salt.
Claim 8
Dependent Claim
20 words
A dilute aqueous biocide suspension obtained by diluting the suspension of claim 1 by at least 8 times with water.
Claim 9
Dependent Claim
15 words
An aqueous biocide suspension as claimed in claim 1, wherein said biocide is a herbicide.
Claim 10
Dependent Claim
14 words
An aqueous biocide suspension as claimed in claim 8, wherein said herbicide is 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine.
Claim 11
Dependent Claim
48 words
An aqueous biocide suspension as claimed in claim 2, wherein said water soluble tackifier is selected from the group consisting of xanthan gum, vegetable pectin, gum arabic, guar gum, methylated cellulose, methylated starch derivatives, carboxyalkylated cellulose, carboxyalkylated starch, hydroxyalkylated cellulose, hydroxyalkylated starch, polyacrylates, polymaleates, polyvinylpyrrolidone and mixtures thereof.
Claim 12
Dependent Claim
52 words
An aqueous biocide suspension as claimed in claim 1, wherein said suspension further contains one or more anionic or nonionic surfactants selected from the group consisting of alkyl sulfate salts, alkyl ether sulfate salts, alkyl phenyl ether sulfate salts, alkyl naphthalenesulfonate salts, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, and mixtures thereof.
Claim 13
Dependent Claim
26 words
An aqueous biocide suspension as claimed in claim 3, wherein M is diethanolamine, and said nonionic surfactant has the formula: ##STR7## wherein R 1 is ##STR8##
Claim 14
Dependent Claim
77 words
An aqueous biocide suspension as claimed in claim 12, wherein said water-insoluble biocide (A) is selected from the group consisting of herbicides, fungicides, insecticides, acaricides and mixtures thereof, said phosphate ester salt of a nonionic surfactant (B) is selected from the group consisting of polyoxyethylene tribenzylphenol ether phosphate diethanolamine salt and polyoxyethylene phenylphenol ether phosphate diethanolamine salt, and said tackifier (D) is selected from the group consisting of xanthan gum, sodium polyacrylate, guar gum, and polyacrylic acid.
Claim 15
Dependent Claim
51 words
An aqueous biocide suspension as claimed in claim 13, consisting essentially of 37 to 52 wt.% of (A), 3 to 6 wt.% of (B), 35.4 to 54.3 wt.% of (C), 0.1 to 0.5 wt.% of (D), 0.2 to 0.5 wt.% of (E), and 2 to 3 wt.% of ethylene glycol (F).
Claim 16
Dependent Claim
51 words
An aqueous biocide suspension as claimed in claim 14, wherein said phosphate ester salt of a nonionic surfactant (B) is selected from the group consisting of polyoxyethylene (12 mol) tribenzylphenol ether phosphate diethanolamine salt, polyoxyethylene (30 mol) tribenzylphenol ether phosphate diethanolamine salt, and polyoxyethylene (7.6 mol) phenylphenol ether phosphate diethanolamine salt.
Claim 17
Dependent Claim
28 words
An aqueous biocide suspension as claimed in claim 15, wherein said biocide (A) is selected from the group consisting of 2-chloro-1-(2,4,5-trichlorophenyl)-vinyl dimethyl phosphate, sulfur, dimethyl-4,4'-o-phenylene-3,3'-dithioallophanate, bis(methylthiocarbamyl)disulfite, and 3',4'-dichloropropionanilide.
Claim 18
Dependent Claim
20 words
A dilute aqueous biocide suspension obtained by diluting the suspension of claim 14 by at least 8 times with water.
Claim 19
Dependent Claim
22 words
An aqueous biocide suspension as claimed in claim 14, wherein said biocide composition further contains 3 to 5 wt.% of sodium alkylbenzenesulfonate.
Claim 20
Dependent Claim
18 words
An aqueous biocide composition according to claim 3, wherein said anti-foaming agent is polypropylene glycol or silicone oil.
References Cited (Backward Citations)
US4313847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |