Patent US4894241A successfully refreshed from Google Patents.
US4894241A
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Halophor composition
Assignee: PPG Industries Inc
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Filing: 1986-01-16
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Granted: 1990-01-16
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Expires: 2006-01-16
Abstract
Abstract Halophors of a complex of bromine or iodine, a tertiary amide, e.g., dialkylformamide or dialkyl acetamide, and a halide, e.g., alkali metal or alkaline earth metal bromide or iodide, are described. The alkyl groups of the tertiary amide are typically lower alkyl groups, i.e., groups containing from 1 to 4 carbon atoms. Also described are solid biocidal compositions, e.g., fumigants, of particulate, free-flowing inert amorphous siliceous carrier having at least a biocidal amount of halophor admixed with said carrier.
Inventors
- 👤 Paritosh M. Chakrabarti
- 👤 Roger A. Crawford
- 👤 Robert H. Juda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:04
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
143 words
A substantially water-free halophor comprising a complex of (a) halogen selected from the group consisting of bromine and iodine, (b) tertiary amide represented by the graphic formula: ##STR2## wherein R is selected from the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) halide represented by the formula, MX, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, and X is bromine, chlorine or iodine, the mole ratio of halide to halogen being from about 1:1 to 1:12, and the amount of halogen in the complex being between about 10 and about 50 weight percent.
Claim 2
Dependent Claim
143 words
A substantially water-free halophor comprising a complex of (a) halogen selected from the group consisting of bromine and iodine, (b) tertiary amide represented by the graphic formula: ##STR2## wherein R is selected from the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) halide represented by the formula, MX, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, and X is bromine, chlorine or iodine, the mole ratio of halide to halogen being from about 1:1 to 1:12, and the amount of halogen in the complex being between about 10 and about 50 weight percent.
Claim 3
Dependent Claim
39 words
The halophor of claim 1 wherein the halogen is bromine, the tertiary amide is a formamide or acetamide, and the halide is an alkali metal bromide selected from the group consisting of lithium bromide sodium bromide and potassium bromide.
Claim 4
Dependent Claim
35 words
The halophor of claim 2 wherein the mole ratio of halide to halogen is from about 1:1 to 1:3 and the amount of halogen in the complex is from about 25 to 40 weight percent.
Claim 5
Dependent Claim
15 words
The halophor of claim 3 wherein the tertiary amide is dimethylformamide, diethylformamide, dimethylacetamide or diethylacetamide.
Claim 6
Dependent Claim
31 words
The halophor of claim 1 wherein the halogen is bromine, the tertiary amide is a formamide or acetamide, and the halide is a bromide, iodide or chloride of calcium or magnesium.
Claim 7
Dependent Claim
164 words
A free flowing substantially water-free particulate halophor composition comprising particulate, inert, amorphous siliceous carrier having adsorbed thereon from about 1 to about 80 weight percent of a complex of (a) halogen selected from the group consisting of bromine and iodine, (b) tertiary amide represented by the graphic formula: ##STR3## wherein R is selected form the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) halide represented by the formula, MX, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, and X is bromine, chlorine or iodine, the mole ratio of halide to halogen being from about 1:1 to 1:12, and the amount of halogen in the complex being between about 10 and about 50 weight percent.
Claim 8
Dependent Claim
164 words
A free flowing substantially water-free particulate halophor composition comprising particulate, inert, amorphous siliceous carrier having adsorbed thereon from about 1 to about 80 weight percent of a complex of (a) halogen selected from the group consisting of bromine and iodine, (b) tertiary amide represented by the graphic formula: ##STR3## wherein R is selected form the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) halide represented by the formula, MX, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, and X is bromine, chlorine or iodine, the mole ratio of halide to halogen being from about 1:1 to 1:12, and the amount of halogen in the complex being between about 10 and about 50 weight percent.
Claim 9
Dependent Claim
24 words
The halophor composition of claim 6 wherein the siliceous carrier is a synthetic amorphous silica amorphous silica or naturally occurring silica- or silicate-containing mineral.
Claim 10
Dependent Claim
22 words
The halophor composition of claim 7 wherein the siliceous carrier contains from about 5 to about 75 weight percent of the complex.
Claim 11
Dependent Claim
25 words
The halophor composition of claim 8 wherein the halogen is bromine, the tertiary amide is a formamide or acetamide, and the halide is a bromide.
Claim 12
Dependent Claim
36 words
The halophor composition of claim 9 wherein the mole ratio of halide to halogen is from about 1:1 to 1:3 and the amount of halogen in the complex is from about 25 to 40 weight percent.
Claim 13
Dependent Claim
14 words
The halophor composition of claim 10 wherein the siliceous carrier is precipitated amorphous silica.
Claim 14
Dependent Claim
16 words
The halophor composition of claim 11 wherein the tertiary amide is dimethylformamide, diethylformamide, dimethylacetamide or diethylacetamide.
Claim 15
Dependent Claim
142 words
A fumigant comprising free flowing, substantially water-free particulate, inert amorphous siliceous carrier having adsorbed thereon an insecticidal amount of a bromophor complex of (a) bromine, (b) tertiary amide represented by the graphic formula: ##STR4## wherein R is selected from the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) bromide represented by the formula, MBr, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, the mole ratio of bromide to bromine being from about 1:1 to 1:12, and the amount of bromine in the complex being between about 10 and about 50 weight percent.
Claim 16
Dependent Claim
142 words
A fumigant comprising free flowing, substantially water-free particulate, inert amorphous siliceous carrier having adsorbed thereon an insecticidal amount of a bromophor complex of (a) bromine, (b) tertiary amide represented by the graphic formula: ##STR4## wherein R is selected from the group consisting of hydrogen and C 1 -C 2 alkyl, R 1 is a C 1 -C 4 alkyl, and R 2 is selected from the group consisting of C 1 -C 4 alkyl and phenyl, and (c) bromide represented by the formula, MBr, wherein M is alkali metal selected from the group consisting of sodium, potassium and lithium, or alkaline earth metal selected from the group consisting of calcium and magnesium, the mole ratio of bromide to bromine being from about 1:1 to 1:12, and the amount of bromine in the complex being between about 10 and about 50 weight percent.
Claim 17
Dependent Claim
24 words
The fumigant of claim 13 wherein from about 10 to about 40 weight percent of the siliceous carrier-bromophor complex composition is the bromophor complex.
Claim 18
Dependent Claim
42 words
The fumigant of claim 14 wherein the tertiary amide is dimethylformamide, diethylformamide, dimethylacetamide, or diethylacetamide, the bromide is sodium bromide, potassium bromide or lithium bromide, and the mole ratio of bromide to bromine in the complex is between about 1:1 and 1:3.
Claim 19
Dependent Claim
11 words
The fumigant of claim 15 wherein the tertiary amide is dimethylformamide.
Claim 20
Dependent Claim
42 words
The fumigant of claim 13 wherein the siliceous carrier is precipitated, amorphous silica, the tertiary amide is dimethylformamide, the halide is lithium bromide, sodium bromide, or potassium bromide, and the mole ratio of bromide to bromine is from about 1:1 to 1:3.
Claim 21
Dependent Claim
24 words
The fumigant of claim 17 wherein from about 10 to about 40 weight percent of the silceous carrier-bromophor complex composition is the bromophor complex.
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) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |