EP0968005A2 - Reduction des emissions de composes volatils au moyen d'additifs - Google Patents
Reduction des emissions de composes volatils au moyen d'additifsInfo
- Publication number
- EP0968005A2 EP0968005A2 EP98900123A EP98900123A EP0968005A2 EP 0968005 A2 EP0968005 A2 EP 0968005A2 EP 98900123 A EP98900123 A EP 98900123A EP 98900123 A EP98900123 A EP 98900123A EP 0968005 A2 EP0968005 A2 EP 0968005A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- compounds
- emission
- hcn
- use according
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/26—Organic substances containing nitrogen or phosphorus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/45—Inorganic substances containing nitrogen or phosphorus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/47—Inorganic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
Definitions
- the invention relates to the use of special additives for reducing the emission of volatile compounds from compositions and products which comprise constituents which can form or release such volatile compounds.
- the invention relates to the provision of additives for the reduction of emissions of volatile compounds which are potentially hazardous or cause unpleasant odour, such as HCN, amines and thio compounds.
- compounds such as HCN, amines such as NH 3 and CH 3 NH 2 or thio compounds such as H 2 S, for example.
- a decrease in the release, in particular, of HCN is of interest, which can proceed in highly variable extents from, for example, cyanide or thiocyanate ions or compounds having cyanide or thiocyanate substituents o compositions comprising such compounds.
- organothiocyanates which include aromatic and aliphatic organothiocyanates
- HCN sources are potential HCN sources.
- aliphatic and aromatic organothiocyanates are thiocyanate-subs tituted thiazoles, 3-thiocyanato-N- octylacrylamide and methylenebis thiocyanate (MBT). They frequently have a characteristic unpleasant odour and, under certain conditions, also release volatile compounds such as, for example, thio compounds and HCN.
- the emission values in this case are, at least in the case of approved commercial products, within the permitted limit values (MAK values), but, in principle, can also lie above these. Emissions of this type and, in particular, elevated emissions, represent a potential hazard to persons handling or using the products containing these constituents.
- the contents of the individual compounds in question in the surrounding atmosphere serve, for example, as measured parameter for the emission of a product, e. g. , for the emission of HCN, the HCN content in the surrounding air serves as indicator, in which case this can be determined using an appropriate test tube (e.g. a Drager tube: prussic acid 2/a (hydrogen cyanide) ( CH 25701)).
- a Drager tube prussic acid 2/a (hydrogen cyanide) ( CH 25701)
- the object therefore underlying the invention is to reduce emissions of volatile compounds such as HCN, thio compounds and amines, for example, which are potentially hazardous or cause unpleasant odour, from compositions and products which comprise constituents which form such compounds which are potentially hazardous or cause unpleasant odour, and, in this regard, to provide low-emission compositions.
- isothiazolone compounds such as N-octylisothiazolone and benzisothiazolone, mercapto compounds, cyclodextrin compounds, iodopropynyl butylcarbamate and diiodomethyl p-tolyl sulphone, zinc oxide, hydrogen peroxide, or mixtures of two or more such compounds, are used as additive for the reduction of emissions of volatile compounds which are potentially hazardous or cause unpleasant odour from compositions which comprise constituents which form such compounds which are potentially hazardous or cause unpleasant odour.
- Preferred embodiments are the subject-matter of the subclaims.
- the extent of the emission reduction may be set via the concentration of the additives.
- MAK values legally prescribed limit values
- a further reduction or elimination of such emissions can increase the safety margin until the MAK values are reached, whereas in the case of substances and compositions whose emission lies above this, a decrease or elimination of the emissions can lead to the corresponding commercial products being approved or being able to be put on the market.
- the reduction can appear in advantages with respect to odour versus a comparison product which contains no additive according to the invention.
- the advantage achieved is, for example, a reduction of the odour strength and/or a change of the odour note or type of odour.
- the following description to illustrate the invention, is essentially concerned with reducing the emission of HCN from organothiocyanate compounds. However, the invention is not restricted thereto, as the further qualitative results for emissions of thio compounds show.
- the test substances selected were firstly an aromatic thiocyanatothiazole or 3-thiocyanato-N-octylacrylamide and secondly aliphatic methylenebis thiocyanate (MET).
- Suitable emission- reducing additives according to the invention are, for example, the following isothiazolones and mixtures of the same: N-octylisothiazolone, 5-chloro-N- methylisothiazolone, N-methylisothiazolone, a mixture of 5-chloro-N-methylisothiazolone and N-methylisothiazolone, 1, 2-benzisothiazolone, 5, 6-dihydro-2-methyl-2H- cyclopent (d)isothiazol-3 (4H) -one.
- a suitable mercapto compound is, for example, Pyrion disulphide.
- Suitable cyclodextrins are, for example, ⁇ -, ⁇ - or ⁇ -cyclodextrin (cyclohexaamylose, methylcycloheptaamylose or cyclooctaamylose) .
- iodopropynyl butylcarbamate, diiodomethyl p-tolyl sulphone, zinc oxide and hydrogen peroxide are suitable.
- the preferred emission- reducing additive is N-octylisothiazolone.
- the embodiments according to the invention prepared are preparations which comprise the emission- reducing additive, in particular an isothiazolone, which reduces the emission of the preparations and, inter alia, also acts as an HCN trap.
- the invention makes it possible to reduce the release of HCN both in aqueous systems over a wide pH range, such as pH 1 to pH 12, e.g. by adding water-soluble isothiazolones, such as N-methylisothiazolone, benzisothiazolone or 5,6- dihydro-2-methyl-2H-cyclopent (d) isothiazol-3 (4H) -one, zinc oxide and hydrogen peroxide, and in lipophilic media, e.g. by adding N-octylisothiazolone.
- water-soluble isothiazolones such as N-methylisothiazolone, benzisothiazolone or 5,6- dihydro-2-methyl-2H-cyclopent (d) isothiazol-3 (4H) -one, zinc oxide and hydrogen peroxide
- lipophilic media e.g. by adding N-octylisothiazolone.
- HCN emissions can be reduced from primarily liquid products (solutions, dispersions, preferably aqueous dispersions). Since substances and compositions having high HCN emissions are not suitable for the market, according to the invention, the possibility is provided of reducing thei emissions so greatly that marketing is thus possible. Moreover, according to the invention, by adding the emission- reducing additives, emissions which are already acceptable and comply with current safety regulations can further be decreased, for example the organoleptic properties can also be improved, which can lead to an increased market acceptance. Furthermore, it is important that the action, e. g. a biocidal action, ascribed to the treated compositions is not impaired by the emission- reducing additives.
- the invention can be used, for example, in the area of solutions or dispersions for a fungicidal and algistatic finishing of materials and technical preservation.
- Concrete areas of application and user products are, for example, preservatives, disinfectants, impregnating agents, paints, si zings and adhesives, primers, coatings, lubricants and plasters.
- the emission- reducing additives according to the invention are used at least in a total amount of 0.01% by weight, preferably 0.01 to 10.0% by weight, in particular 0.1 to 7.5% by weight, and preferably 0.5 to 5.0% by weight, based on the composition.
- the proportion of each of these additive components can be set according to the specific p roduct requi rements .
- Aqueous dispersions which comprised 7.8% by weight of aromatic organothiocyanate (in the form of 26% by weight of a 30% strength dispersion), based on the weight of the dispersions, were admixed with various amounts of different cyclodextrins (0.5%, 1.0%, 2.0%, 3.0% and 5.0%, based on the weight of the dispersions, of cyclodextrin (CD) alpha (Example la) or CD beta (Example lb) or CD gamma (Example Ic) and were tested for compatibility and stability. The procedure and the results of "HCN" measurements are reported below. Appearance after s torage at room temperature for 12 days or 10 weeks:
- Aqueous dispersions which comprised 7.8% by weight of aromatic organothiocyanate (in the form of 26% by weight of a 30% strength dispersion), based on the weight of the dispersions, were admixed with various amounts of N- octylisothiazolone (45% strength solution) (0.5%, 1.0%, 2.0%, 3.0% or 5.0%, based on the weight of the dispersion) and were tested for compatibility and stability. The procedure and results of "HCN" measurements are reported below.
- the Drager test tube was used together with a pump. BDth tips of the tube were broken off and one end of the tube was then inserted tightly into the pump.
- the HCN content was tested by holding the other end of the tube in the air space over the surface of the respective sample in a 50 ml wide-neck sample vial which was filled with 50 g of the sample. The temperature was 23.5°C.
- the sample vials had been sealed for 4 weeks.
- the air was sucked through the tube. The measurement period was about 60 seconds for 5 strokes and correspondingly about 24 seconds for 2 strokes.
- the result was then determined on the basis of the coloration (reaction of HCN with HgCl 2 and methyl red).
- the measurement method corresponds to the Drager instruction 234-257 of 1995. )
- N-octylisothiazolone 45% strength solution significantly decreases the HCN emission of a romati c-o rgano thi ocyanate-contai ni ng dis pe rs i ons .
- Aqueous dispersions were produced which comprised 7.8% by weight of aromatic organothiocyanate (in the form of 13% by weight of a 60% strength dispersion) based on the weight of the dispersions.
- the dispersions were homogeneous and whitish-yellow (very high quality).
- the dispersions were measured after storage at room temperature for 24 hours in a 250 ml wide-neck bottle which contained approximately 100 g of the respective sample:
- the aromatic organothiocyanate content of the dispersions containing 0 or 1% N-octylisothiazolone (45% strength solution) was: without N-octylisothiazolone 7.1% with 1 % N-octylisothiazolone 7.1% Result:
- N-octylisothiazolone significantly decreases the HCN emission of aromatic-organothiocyanate- containing dispersions.
- the odour of such dispersions is improved in this case.
- the further additives studied lead to a reduction of the HCN emission, which reduction, in comparison with the isothiazolones, is somewhat lesser.
- Preferred examples of these further additives lead to a comparatively high reduction (to ⁇ 20 ppm) of the HCN emission of aromatic-organothiocyanate-containing compos i ti ons .
- N-octylacrylamide is almost white, homogeneous and has an HCN emission of 13 ppm (5 strokes) (Drager tube, see above).
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Thiazole And Isothizaole Compounds (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19703711 | 1997-01-23 | ||
DE19703711A DE19703711C2 (de) | 1997-01-23 | 1997-01-23 | Verminderung von Emissionen von HCN durch Additive |
PCT/IB1998/000063 WO1998032473A2 (fr) | 1997-01-23 | 1998-01-16 | Reduction des emissions de composes volatils au moyen d'additifs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0968005A2 true EP0968005A2 (fr) | 2000-01-05 |
EP0968005B1 EP0968005B1 (fr) | 2005-01-05 |
Family
ID=7818974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98900123A Expired - Lifetime EP0968005B1 (fr) | 1997-01-23 | 1998-01-16 | Utilisation d'isothiazolone pour la reduction des emissions de hcn |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0968005B1 (fr) |
JP (1) | JP2001521411A (fr) |
AU (1) | AU5336598A (fr) |
BR (1) | BR9807087A (fr) |
CA (1) | CA2278288A1 (fr) |
DE (2) | DE19703711C2 (fr) |
ES (1) | ES2235309T3 (fr) |
WO (1) | WO1998032473A2 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020132861A1 (en) * | 2000-08-18 | 2002-09-19 | Hirotaka Uchiyama | Reduction of odors from coating material |
DE10340829A1 (de) * | 2003-09-04 | 2005-04-07 | Schülke & Mayr GmbH | Salzarme oder salzfreie mikrobizide Zusammensetzung auf Basis von Isothiazolon-Derivaten und Pyriondisulfid |
US20100189811A1 (en) * | 2009-01-29 | 2010-07-29 | Thor Gmbh | Biocide compositions comprising 3-methylisothiazolin-3-one and a haloalkyl sulphone |
ES2705088B2 (es) | 2017-09-20 | 2020-03-30 | Liderkit S L | Nuevo gel-coat aditivado con particulas de dioxido de titanio y alumina |
JP7415104B2 (ja) * | 2019-06-03 | 2024-01-17 | 三井化学株式会社 | ジヨードメタン化合物の水溶液の製造方法 |
JP2024519112A (ja) * | 2021-05-21 | 2024-05-08 | トロイ テクノロジー,ザ セカンド,インコーポレイティド | 湿潤状態での細菌制御のためのブースト型ipbc |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3996346A (en) * | 1975-03-18 | 1976-12-07 | Dominic Thomas Staffier | Composition for reducing bodily odor and perspiration |
LU81802A1 (fr) * | 1978-10-20 | 1980-01-25 | Metallurg Ct Voor Res Metallur | Procede pour epurer les eaux residuaires |
JPS63209798A (ja) * | 1987-02-24 | 1988-08-31 | Tokyo Met Gov Gesuidou Service Kk | 汚泥消臭剤 |
JPH01204940A (ja) * | 1988-02-12 | 1989-08-17 | Asada Seifun Kk | ポリプロピレン樹脂成型組成物 |
JPH01224098A (ja) * | 1988-03-02 | 1989-09-07 | Tokyo Met Gov Gesuidou Service Kk | 脱水汚泥ケーキの消臭方法 |
JPH0683720B2 (ja) * | 1990-06-19 | 1994-10-26 | 日本曹達株式会社 | 循環式トイレ処理剤 |
JPH05139918A (ja) * | 1991-11-22 | 1993-06-08 | Nikka Chem Co Ltd | 抗菌防臭剤 |
JPH0623345A (ja) * | 1992-07-09 | 1994-02-01 | Hokko Chem Ind Co Ltd | し尿用清浄剤 |
US5284649A (en) * | 1992-09-29 | 1994-02-08 | The Procter & Gamble Company | Deodorant gel sticks containing 1-hydroxy pyridinethione active |
US5415785A (en) * | 1992-12-11 | 1995-05-16 | Nalco Chemical Company | Method for removing a cyanide contaminant from refinery waste water streams |
JP3252239B2 (ja) * | 1992-12-15 | 2002-02-04 | コニカ株式会社 | ハロゲン化銀写真感光材料の処理方法及び処理液 |
US5292776A (en) * | 1993-03-26 | 1994-03-08 | Betz Laboratories, Inc. | Microbial inhibiting compositions and their use |
JP2747880B2 (ja) * | 1993-12-27 | 1998-05-06 | 株式会社工生研 | 脱水ケーキの消臭剤 |
-
1997
- 1997-01-23 DE DE19703711A patent/DE19703711C2/de not_active Expired - Fee Related
-
1998
- 1998-01-16 BR BR9807087-8A patent/BR9807087A/pt not_active IP Right Cessation
- 1998-01-16 AU AU53365/98A patent/AU5336598A/en not_active Abandoned
- 1998-01-16 EP EP98900123A patent/EP0968005B1/fr not_active Expired - Lifetime
- 1998-01-16 WO PCT/IB1998/000063 patent/WO1998032473A2/fr active IP Right Grant
- 1998-01-16 JP JP53177398A patent/JP2001521411A/ja active Pending
- 1998-01-16 CA CA002278288A patent/CA2278288A1/fr not_active Abandoned
- 1998-01-16 ES ES98900123T patent/ES2235309T3/es not_active Expired - Lifetime
- 1998-01-16 DE DE69828492T patent/DE69828492T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9832473A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE19703711A1 (de) | 1998-07-30 |
WO1998032473A2 (fr) | 1998-07-30 |
DE69828492D1 (de) | 2005-02-10 |
EP0968005B1 (fr) | 2005-01-05 |
DE19703711C2 (de) | 1999-07-01 |
BR9807087A (pt) | 2000-04-18 |
CA2278288A1 (fr) | 1998-07-30 |
WO1998032473A3 (fr) | 1998-09-11 |
ES2235309T3 (es) | 2005-07-01 |
JP2001521411A (ja) | 2001-11-06 |
DE69828492T2 (de) | 2005-12-15 |
AU5336598A (en) | 1998-08-18 |
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