Patent US3560127A successfully refreshed from Google Patents.
EP0457435A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Biocide composition and use
Assignee: Syngenta Ltd
•
Filing: 1991-04-12
•
Granted: —
•
Expires: 2011-04-12
Abstract
Abstract A composition which contains a 4,5-polymethylene-4-isothiazolin-3-one and either a 2-halo-2-halomethylglutaronitrile or a defined isothiazolinone which is different from the 4,5-polymethylene-4-isothiazolin-3-one and which can be a 4,5-optionally halogenated N-alkyl isothiazolin-3-one. The compositions exhibit anti-microbial activity and certain combinations are surprisingly effective against bacteria.
Inventors
- 👤 Fraser Forrest Morpeth
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:07
CPC Classifications
A; A01; A01N; A01N43/00; A01N43/72; A01N43/80
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
39 words
A composition which comprises a) at least one 4,5-polymethylene-4-isothiazolin-3-one or a derivative thereof, and b) at least one 2-halo-2-halomethyl glutaronitrile, or c) at least one isothiazolin-3-one derivative which does not contain a fused ring attached to the isothiazole ring.
Claim 2
Dependent Claim
191 words
A composition as claimed in claim 1 wherein a) is at least one compound of the general formula: wherein R¹ and R² together represent a polymethylene chain having 3 or 4 carbon atoms, or a polymethylene chain having 3 or 4 carbon atoms substituted by at least one lower alkyl radical having from 1 to 4 carbon atoms; R³ represents hydrogen, linear or branched alkyl having up to 12 carbon atoms, linear or branched alkyl having up to 3 carbon atoms substituted by at least one hydroxyl group, an alkenyl group having from 3 to 6 carbon atoms, a radical of the formula wherein n is 0 or 1; m is 1 or 2; R⁴ represents hydrogen or alkyl having from 1 to 4 carbon atoms; and R⁵ represents hydrogen, alkyl having from 1 to 4 carbon atoms, nitro, trifluoromethyl or halogen, cycloalkyl having from 3 to 6 carbon atoms, a radical of formula wherein R⁶ represents hydrogen, linear or branched alkyl having up to 12 carbon atoms or a radical of formula as defined above, or their salts or complex with a mineral or organic acid, or with a base.
Claim 3
Dependent Claim
19 words
A composition as claimed in either claim 1 or claim 2 wherein component a) is either 4,5-trimethylene-4-isothiazolin-3-one or 2-methyl-4,5-trimethylene-4-isothiazolin-3-one.
Claim 4
Dependent Claim
37 words
A composition as claimed in any one of claims 1 to 3 where component b) is at least one compound of general formula wherein each X, which may be the same or different, is a halogen atom.
Claim 5
Dependent Claim
22 words
A composition as claimed in any one of claims 1 to 4 wherein component b) is either 2-chloro-2-chloromethyl glutaronitrile or 2-bromo-2-bromomethyl glutaronitrile.
Claim 6
Dependent Claim
18 words
A composition as claimed in any one of claims 1 to 5 which comprises 2-methyl-4,5-trimethylene-4-isothiazolin-3-one and 2-bromo-2-bromomethyl glutaronitrile.
Claim 7
Dependent Claim
57 words
A composition as claimed in any one of claims 1 to 3 where component (c) is at least one compound of general formula wherein Y is a hydrogen atom, an alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl or aryl; and R⁷ is hydrogen, halogen or an alkyl group; and R⁸ is hydrogen, halogen or an alkyl group.
Claim 8
Dependent Claim
22 words
A composition as claimed in claim 7 wherein component (c) is selected from 2-methylisothiazolin-3-one, 5-chloro-2-methylisothiazolin-3-one and 4,5-dichloro-2-methylisothiazolin-3-one either alone or in combination.
Claim 9
Dependent Claim
20 words
A composition as claimed in claim 8 which comprises 2-methyl-4,5-trimethylene-4-isothiazolin-3-one together with at least one of 2-methylisothiazolin-3-one, 5-chloro-2-methylisothiazolin-3-one and 4,5-dichloro-2-methylisothiazolin-3-one.
Claim 10
Dependent Claim
45 words
A composition as claimed in any one of claims 1 to 9 which contains from one part by weight of component (a) or of component (b) or component (c) and up to 2000 parts by weight of component (b) or component (c) or component (a).
Claim 11
Dependent Claim
27 words
A composition as claimed in any one of claims 1 to 10 wherein the sum of the fractional inhibitory concentration of the components is less than 0.7.
Claim 12
Dependent Claim
17 words
A composition as claimed in any one of claims 1 to 11 which additionally includes a carrier.
Claim 13
Independent Claim
34 words
A medium which is susceptible to attack by micro-organisms and which contains from 0.00001 to 10% by weight of the medium of a composition as claimed in any one of claims 1 to 12.
Claim 14
Dependent Claim
52 words
A medium as claimed in claim 13 which is selected from a cooling water system, a paper mill liquor, a metal working fluid, a geological drilling lubricant, a polymer emulsion, a paint, a lacquer, a varnish, a hydrocarbon fluid, an adhesive, a dyestuff or ink formulation, an agrochemical formulation, leather or wood.
Claim 15
Independent Claim
31 words
A method for inhibiting the growth of micro-organisms on, or in, a medium, which comprises treating the medium with a composition as claimed in any one of claims 1 to 12.
Claim 16
Independent Claim
44 words
A method for inhibiting the growth of micro-organisms on, or in, a medium, which comprises treating the medium with component (a) and component (b) sequentially, wherein a) is at least one 4,5-polymethylene-4-isothiazolin-3-one or a derivative thereof, and b) is at least one 2-halo-2-halomethyl glutaronitrile.
Claim 17
Independent Claim
55 words
A method for inhibiting the growth of micro-organisms on, or in, a medium which comprises treating the medium with component (a) and component (c) sequentially, wherein a) is at least one 4,5-polymethylene-4-isothiazolin-3-one or a derivative thereof, and c) is at least one isothiazolin-3-one which does not contain a fused ring attached to the isothiazole ring.
Claim 18
Independent Claim
60 words
A method as claimed in any one of claims 15 to 17 wherein the medium which is treated is a cooling water system, a paper mill liquor, a metal working fluid, a geological drilling lubricant, a polymer emulsion, a paint, a lacquer, a varnish, a hydrocarbon fluid, an adhesive, a dyestuff or ink formulation, an agrochemical formulation, leather or wood.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.