US6905698B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate carrier for biocide formulations
Assignee: Ineos Silicas Ltd
•
Filing: 1999-08-24
•
Granted: 2005-06-14
•
Expires: 2019-08-24
Abstract
Abstract A particulate carrier material is impregnated with a biocidal formulation and serves as a vehicle for introduction of the biocide into a liquid-based media, such as a surface coating or surface cleaning compositions, in order to allow controlled release of the biocide to combat bacterial, fungal, algal or like growth for an extend period of time.
Inventors
- 👤 Derek Aldcroft
- 👤 Helen Jones
- 👤 Dafydd Turner
- 👤 Michel Edge
- 👤 Julie Robinson
- 👤 Kenneth Seal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:06
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/14; A; A01; A01N; A01N25/00; A01N25/08; A01N43/00; A01N43/72; A01N43/80
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
169 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which is at least one of amorphous silicas, amorphous aluminas, pseudoboehmites, Y-zeolites, dealuminated Y-zeolites or mixtures of two or more thereof and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 2
Dependent Claim
169 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which is at least one of amorphous silicas, amorphous aluminas, pseudoboehmites, Y-zeolites, dealuminated Y-zeolites or mixtures of two or more thereof and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 3
Dependent Claim
16 words
A composition as claimed in claim 1 in which the retention factor is at least 0.8.
Claim 4
Dependent Claim
20 words
A composition as claimed in claim 1 in which the particles carry at least 30% by weight of biocide solution.
Claim 5
Dependent Claim
16 words
A composition as claimed in claim 1 in which the particles have an activated micropore system.
Claim 6
Dependent Claim
23 words
A composition as claimed in claim 1 in which the particles have a BET surface area of at least 300 m 2 /g.
Claim 7
Dependent Claim
22 words
A composition as claimed in claim 1 in which the particles have a biocide adsorption capacity of at least 10% by weight.
Claim 8
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 1 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition or a drilling mud.
Claim 9
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 3 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition and a drilling mud.
Claim 10
Dependent Claim
19 words
A surface coating formulation as claimed in claim 1 in the form of a water-based or organic solvent-based paint.
Claim 11
Dependent Claim
21 words
A composition as claimed in claim 1 in which the particles have: a weight mean particle size less than 50 microns.
Claim 12
Dependent Claim
19 words
The composition of claim 1 wherein said particles have a pore area of at least 25 m 2 /g.
Claim 13
Dependent Claim
165 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which are Y-zeolites with, optionally, amorphous silicas, dealuminated Y-zeolites, or mixtures of two or more of these and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 /g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 14
Dependent Claim
165 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which are Y-zeolites with, optionally, amorphous silicas, dealuminated Y-zeolites, or mixtures of two or more of these and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 /g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 15
Dependent Claim
165 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which are dealuminated Y-zeolites with, optionally, amorphous silicas, Y-zeolites, or mixtures of two or more of these and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 /g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 16
Dependent Claim
165 words
A particulate composition of matter comprising a liquid dispersible mass of porous inorganic carrier particles which are dealuminated Y-zeolites with, optionally, amorphous silicas, Y-zeolites, or mixtures of two or more of these and biocide releasably adsorbed within the pore system thereof, said particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and a BET surface area of at least 200 m 2 /g, wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 17
Dependent Claim
160 words
A particulate composition of matter useful as a vehicle for introducing biocide into a liquid-based medium comprising a liquid-dispersible mass of inorganic carrier particles comprising Y zeolite particles having biocide adsorbed within the pore system thereof for release of biocide into the liquid medium, said amorphous Y zeolite particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 18
Dependent Claim
160 words
A particulate composition of matter useful as a vehicle for introducing biocide into a liquid-based medium comprising a liquid-dispersible mass of inorganic carrier particles comprising Y zeolite particles having biocide adsorbed within the pore system thereof for release of biocide into the liquid medium, said amorphous Y zeolite particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6, and wherein the biocide is at least one of 2-methyl-4-isothiazolone, 2-ethyl-4-isothiazolin-3-one, 2-propyl-4-isothiazolin-3-one, 2-butyl-4-isothiazolin-3-one, 2-amyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 5-bromo-2-methyl-4-isothiazolin-3-one, 5-iodo-2-methyl-4-isothiazolin-3-one, 5-chloro-2-butyl-4-isothiazolin-3-one, 5-bromo-2-ethyl-4-isothiazolin-3-one, 5-iodo-2-amyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one.
Claim 19
Dependent Claim
17 words
A composition as claimed in claim 14 in which the Y zeolite is a dealuminated Y zeolite.
Claim 20
Dependent Claim
21 words
A composition as claimed in claim 14 in which the Si:Al ratio of the Y zeolite is at least about 5:1.
Claim 21
Dependent Claim
26 words
A composition as claimed in claim 14 in which the Si:Al ratio of the Y zeolite is in the range from about 5:1 to about 33:1.
Claim 22
Dependent Claim
16 words
A composition as claimed in claim 14 in which the retention factor is at least 0.8.
Claim 23
Dependent Claim
20 words
A composition as claimed in claim 14 in which the particles carry at least 30% by weight of biocide solution.
Claim 24
Dependent Claim
16 words
A composition as claimed in claim 14 in which the particles have an activated micropore system.
Claim 25
Dependent Claim
22 words
A composition as claimed in claim 14 in which the particles have a biocide adsorption capacity of at least 10% by weight.
Claim 26
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 14 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition or a drilling mud.
Claim 27
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 19 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition and a drilling mud.
Claim 28
Dependent Claim
19 words
A surface coating formulation as claimed in claim 14 in the form of a water-based or organic solvent-based paint.
Claim 29
Dependent Claim
21 words
A composition as claimed in claim 14 in which the particles have a weight mean particle size less than 50 microns.
Claim 30
Dependent Claim
19 words
The composition of claim 14 wherein said particles have a pore area of at least 25 m 2 μg.
Claim 31
Dependent Claim
175 words
A particulate composition of matter useful as a vehicle for introducing biocide into a liquid-based medium comprising a liquid-dispersible mass of inorganic carrier particles having a pore size range including the range from about 20 to about 50 Angstroms; and a pore area of at least 25 m 2 /g in the pore size range from about 20 to about 50 Angstroms and comprising Y zeolite particles having biocide adsorbed within the pore system thereof for release of biocide into the liquid medium, said amorphous Y zeolite particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6.
Claim 32
Dependent Claim
175 words
A particulate composition of matter useful as a vehicle for introducing biocide into a liquid-based medium comprising a liquid-dispersible mass of inorganic carrier particles having a pore size range including the range from about 20 to about 50 Angstroms; and a pore area of at least 25 m 2 /g in the pore size range from about 20 to about 50 Angstroms and comprising Y zeolite particles having biocide adsorbed within the pore system thereof for release of biocide into the liquid medium, said amorphous Y zeolite particles having a retention factor R, determined from the equation R=A/P, where A represents the percentage active ingredient by weight remaining in the pore system after contacting a sample consisting of a homogenised mixture of 0.75 g biocide and 2.25 g of carrier particles with 1000 ml of water for 90 minutes and P represents the potency as defined by the Minimum Inhibition Concentration in mg of active ingredient per liter of the biocide determined with respect to the reference microorganism Aureobasidium pullulans , of at least 0.6.
Claim 33
Dependent Claim
16 words
A composition as claimed in claim 27 in which the retention factor is at least 0.8.
Claim 34
Dependent Claim
20 words
A composition as claimed in claim 27 in which the particles carry at least 30% by weight of biocide solution.
Claim 35
Dependent Claim
16 words
A composition as claimed in claim 27 in which the particles have an activated micropore system.
Claim 36
Dependent Claim
22 words
A composition as claimed in claim 27 in which the particles have a biocide adsorption capacity of at least 10% by weight.
Claim 37
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 27 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition or a drilling mud.
Claim 38
Dependent Claim
38 words
A liquid-based medium incorporating the particulate composition as claimed in claim 30 , said liquid medium comprising a surface coating composition, a surface cleaning composition, a sealant composition, a tiling composition, a grouting composition and a drilling mud.
Claim 39
Dependent Claim
19 words
A surface coating formulation as claimed in claim 27 in the form of a water-based or organic solvent-based paint.
Claim 40
Dependent Claim
21 words
A composition as claimed in claim 27 in which the particles have a weight mean particle size less than 50 microns.
Claim 41
Dependent Claim
17 words
A composition as claimed in claim 27 in which the Y zeolite is a dealuminated Y zeolite.
Claim 42
Dependent Claim
21 words
A composition as claimed in claim 27 in which the Si:Al ratio of the Y zeolite is at least about 5:1.
Claim 43
Dependent Claim
26 words
A composition as claimed in claim 27 in which the Si:Al ratio of the Y zeolite is in the range from about 5:1 to about 33:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-06-13 | 2008-12-13 | 2009-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-06-13 | 2012-12-13 | 2013-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-06-13 | 2016-12-13 | 2017-06-14 | $7700.00 | Window Closed / Lapsed |