EP0679333A2
Expired / Lapsed
EP
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Non-sensitizing biocide composition
Assignee: Rohm and Haas Co
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Filing: 1995-04-12
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Granted: —
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Expires: 2015-04-12
Abstract
Abstract The skin sensitization potential of 3-isothiazolone biocides in loci such as water-based marine antifouling paints or decorative paint is reduced by encapsulating the biocide in polyurea particles.
Inventors
- 👤 Beverly Jean El A'mma
- 👤 George Harvey Redlich
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 16:22
CPC Classifications
A; A01; A01N; A01N43/00; A01N43/72; A01N43/80; A61; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/30; A61K8/49; A61K8/72; A61K8/84; A61Q; A61Q17/00; A61Q17/005; A61Q19/00; B; B27; B27K; B27K3/00; B27K3/34; B27K3/343; B27K3/50; C; C08; C08K; C08K9/00; C08K9/08; C08L; C08L97/00; C08L97/02; C09; C09D; C09D5/00; C09D5/14; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625; C09D5/1687; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; B27K3/005; B27K3/02; B27K3/15; C08L75/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
7 words
Composition comprising particles of polyurea encapsulating 3-isothiazolone.
Claim 2
Dependent Claim
12 words
Composition according to claim 1 wherein said 3-isothiazolone comprises 4,5-dichloro-2-n-octyl-3-isothiazolone or 2-n-octyl-3-isothiazolone.
Claim 3
Dependent Claim
30 words
Composition according to claim 1 or 2 wherein said polyurea is formed by polymerization of one or more polyisocyanates and one or more polyamines in the presence of said 3-isothiazolone.
Claim 4
Dependent Claim
14 words
Composition according to claim 3 wherein said polyamine comprises diethylene, triethylene or tetraethylene amines.
Claim 5
Dependent Claim
36 words
Composition according to claim 3 or 4 wherein said polyisocyanate comprises polymethylene polyphenylisocyanate (PAPI); 2,6-toluene diisocyanate (TDI); bis(4-isocyanatocyclohexyl)methane; hexamethylene diisocyanate (HDI); para-phenylene diisocyanate; meta-phenylene diisocyanate; naphthalene-1,5-diisocyanate; diphenylmethane-4,4-diisocyanate (MDI); triphenylmethane-4,4',4''-triisocyanate; isopropyl benzene diisocyanate; or isophorone diisocyanate (IPDI).
Claim 6
Dependent Claim
22 words
Composition according to any preceding claim wherein said particles have a diameter of less than 100 microns, preferably less than 40 microns.
Claim 7
Dependent Claim
17 words
Composition according to any preceding claim wherein said particles comprise from 25 to 90% by weight 3-isothiazolone.
Claim 8
Dependent Claim
27 words
A caulk; sealant; paint; varnish; mastic; adhesive; film-forming polymer; wood impregnant; plastic; metal-working fluid; cosmetic composition; or rubber, containing a composition as defined in any preceding claim.
Claim 9
Dependent Claim
28 words
A marine anti-fouling paint comprising a film forming polymer, a pigment, and a composition as defined in any of claims 1 to 7, wherein the isothiazolone is 4,5-dichloro-2-n-octyl-3-isothiazolone.
Claim 10
Dependent Claim
45 words
A decorative paint comprising a film-forming polymer, a pigment, and a composition as defined in any of claims 1 to 7, wherein the particles of said composition have a diameter of less than 20 microns and comprise 0.03 to 0.5% by weight of the paint.
Claim 11
Dependent Claim
27 words
A substrate, preferably a marine structure such as a ship, floating platform, pier, rig or fishnet, coated with a paint as defined in claim 9 or 10.
Claim 12
Dependent Claim
27 words
Method of reducing the skin sensitizing effect of a composition containing a 3-isothiazolone, comprising encapsulating said 3-isothiazolone in polyurea particles and dispersing said particles in the composition.
Claim 13
Dependent Claim
21 words
Use of a composition as defined in any of claims 1 to 7 to reduce the skin sensitizing effect of 3-isothiazolones.
References Cited (Backward Citations)
US5225279A
Cited
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