CH453086A - Viewing window, in particular for respiratory masks - Google Patents
Viewing window, in particular for respiratory masksInfo
- Publication number
- CH453086A CH453086A CH958567A CH958567A CH453086A CH 453086 A CH453086 A CH 453086A CH 958567 A CH958567 A CH 958567A CH 958567 A CH958567 A CH 958567A CH 453086 A CH453086 A CH 453086A
- Authority
- CH
- Switzerland
- Prior art keywords
- lens
- respiratory masks
- viewing window
- wetting agent
- main patent
- Prior art date
Links
- 230000000241 respiratory effect Effects 0.000 title claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 12
- 239000004014 plasticizer Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000003459 sulfonic acid esters Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- MWFJXRUUPWIALU-UHFFFAOYSA-N ethyl ethenesulfonate Chemical compound CCOS(=O)(=O)C=C MWFJXRUUPWIALU-UHFFFAOYSA-N 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical class OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks
-
- 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
- A62D7/00—Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Materials Engineering (AREA)
- Business, Economics & Management (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Surface Treatment Of Optical Elements (AREA)
Description
Sichtscheibe, insbesondere für Atemschutzmasken Gegenstand :des Hauptpatentes ist eine Sicht scheibe, insbesondere für Atemschutzmasken, die aus durchsichtigem Kunststoff besteht, wobei dieser Netz mittel enthält. Dieses kann z. B. in das Material der Sichtscheibe bei der Herstellung der Scheibe eingear beitet werden.
Etwas Netzmittel befindet sich dann immer an der Oberfläche der Sichtscheibe, so dass diese benetzbar sind. Wird das Netzmittel an der Oberflä che der Schicht während des Gebrauchs ausgewaschen, so diffundiert weiteres Netzmittel aus dem Innern der Scheibe an die Oberfläche, so dass die Netzwirkung erhalten bleibt. Wie im Hauptpatent erwähnt, kann als Weichmacher für das Scheibenmaterial eine Substanz dienen, die möglichst wenig hydrophob bzw. möglichst hydrophil ist. Weiterhin können, wie im Hauptpatent erwähnt, als Material für die Sichtscheiben Stoffe einer möglichst hydrophilen Oberfläche dienen.
Weiterhin kann, wie im Hauptpatent erwähnt, auf der dem Ge sicht zugewandten Seite der Sichtscheibe eine hydro- phile Oberfläche erzeugt sein.
Das Netzmittel kann, wie im Hauptpatent erwähnt, in das Scheibenmaterial vor oder beider Herstellung der Scheibe eingearbeitet sein.
Die Erfindung betrifft eine weitere Ausbildung des Erfindungsgegenstandes des Hauptpatentes und besteht darin, dass als Netzmittel ein Weichmacher dient, der durch Wasser zu Netzmitteln. hydrolysiert wird. Durch die erfindungsgemässe Ausbildung ergibt sich der Vor teil, dass eine Sichtscheibe guter mechanischer Eigen schaften gebildet ist, die zudem den Vorteil hat, dass in der Oberfläche der Scheibe während: des Gebrauchs ständig Netzmittel gebildet und damit die Scheibe beim Gebrauch nicht durch Kondenswasser in trüber Schicht beschlagen wird. Der Zusatz eines weiteren Netzmittels kann entfallen.
Für die erfindungsgemässen Sichtscheiben können alle Weichmacher Verwendung finden, die sich unter Einwirkung von Wasser, gegebenenfalls auch unter Einwirkung von Luft und Feuchtigkeit zu Netzmitteln umsetzen. Vorteilhaft eignen sich dafür Sulfonsäure- ester, wie insbesondere :der Vinylsulfonsäureethylester.
Die Erfindung sei anhand des folgenden Ausfüh rungsbeispiels erläutert.
Pulver von Azetyl- und Butylcelluloseester werden mit 14 % der angegebenen Weichmacher vermischt und verschmolzen bzw. gesintert. Die Stoffe können aber auch aus einer Lösung, beispielsise aus einer Aze- tonlösung gegossen werden. Aus der Schmelze oder der Lösung, oder dem Sinterungsprodukt werden in an sich bekannter Weise die Sichtscheiben hergestellt.
Die so hergestellten Sichtcheiben haben hervorra gende mechanische Eigenschaften. Beim Gebrauch der Sichtscheiben setzt sich der an der Oberfläche vorhan dene Weichmacher mit Wasser - gegebenenfalls in Gegenwart der Luft - unter Bildung von Netzmitteln. um. Die Bildung eines trüben Kondenswasser-Beschlages wird dadurch verhindert. Beim weiteren Gebrauch der Scheibe diffundiert der Weichmacher aus dem Inneren der Scheibe an die Oberfläche, so dass die beschrie bene Netzwirkung erhalten bleibt.
Lens, in particular for respirators Subject: the main patent is a lens, in particular for respiratory masks, which consists of transparent plastic, this network contains medium. This can e.g. B. be processed in the material of the lens in the manufacture of the disc.
Some wetting agent is then always on the surface of the lens so that it can be wetted. If the wetting agent on the surface of the layer is washed out during use, further wetting agent diffuses from the inside of the pane to the surface, so that the wetting effect is maintained. As mentioned in the main patent, a substance that is as little hydrophobic or as hydrophilic as possible can serve as a plasticizer for the pane material. Furthermore, as mentioned in the main patent, substances with a surface that is as hydrophilic as possible can serve as material for the viewing panes.
Furthermore, as mentioned in the main patent, a hydrophilic surface can be produced on the side of the window facing the face.
As mentioned in the main patent, the wetting agent can be incorporated into the pane material before or during manufacture of the pane.
The invention relates to a further embodiment of the subject matter of the invention of the main patent and consists in the fact that a plasticizer is used as the wetting agent, which is converted into wetting agents by water. is hydrolyzed. The inventive design results in the advantage that a lens with good mechanical properties is formed, which also has the advantage that wetting agents are constantly formed in the surface of the lens during use and thus the lens is not cloudy during use due to condensation Layer is fogged. The addition of a further wetting agent can be omitted.
All plasticizers can be used for the vision panels according to the invention which convert to wetting agents under the action of water, possibly also under the action of air and moisture. Sulphonic acid esters are advantageously suitable for this, such as in particular: the vinylsulphonic acid ethyl ester.
The invention will be explained with the aid of the following exemplary embodiment.
Acetyl and butyl cellulose ester powders are mixed with 14% of the specified plasticizers and fused or sintered. The substances can, however, also be poured from a solution, for example from an acetone solution. The viewing panes are produced from the melt or the solution or the sintered product in a manner known per se.
The viewing panes produced in this way have excellent mechanical properties. When using the viewing panes, the plasticizer present on the surface settles with water - possibly in the presence of air - with the formation of wetting agents. around. This prevents the formation of cloudy condensation. When the pane is used further, the plasticizer diffuses from the inside of the pane to the surface, so that the described network effect is retained.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED46989A DE1245746B (en) | 1965-04-08 | 1965-04-08 | Window, especially for respiratory masks or the like. |
| DED0050987 | 1966-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH453086A true CH453086A (en) | 1968-05-31 |
Family
ID=25972096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH958567A CH453086A (en) | 1965-04-08 | 1967-07-05 | Viewing window, in particular for respiratory masks |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT278539B (en) |
| BE (1) | BE701028A (en) |
| CH (1) | CH453086A (en) |
| DE (1) | DE1546499A1 (en) |
| FR (1) | FR92989E (en) |
| GB (1) | GB1178188A (en) |
| NL (1) | NL154425B (en) |
-
1966
- 1966-08-31 DE DE19661546499 patent/DE1546499A1/en not_active Withdrawn
-
1967
- 1967-06-19 NL NL676708499A patent/NL154425B/en unknown
- 1967-06-26 AT AT592367A patent/AT278539B/en not_active IP Right Cessation
- 1967-07-05 CH CH958567A patent/CH453086A/en unknown
- 1967-07-06 BE BE701028A patent/BE701028A/xx unknown
- 1967-07-10 FR FR113756A patent/FR92989E/en not_active Expired
- 1967-08-31 GB GB39975/67A patent/GB1178188A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT278539B (en) | 1970-02-10 |
| DE1546499A1 (en) | 1969-05-29 |
| NL154425B (en) | 1977-09-15 |
| BE701028A (en) | 1967-12-18 |
| GB1178188A (en) | 1970-01-21 |
| NL6708499A (en) | 1968-03-01 |
| FR92989E (en) | 1969-01-24 |
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