Claims
- 1. A match head formulation suitable for the production of safety matches containing potassium chlorate and red amorphous phosphorous, the balance being made up of a binder, a thickener, a filler, and a foaming agent to the exclusion of sulphur, zinc oxide and a dichromate wherein the proportion of amorphous phosphorus present is in the range from 0.5 to 2.0 percent dry weight.
- 2. A match head formulation in accordance with claim 1 which when in the form of a wet composition has a density in the range from 1.0 to 1.4 g/cm.sup.3.
- 3. A match head formulation in accordance with claim 1 wherein the proportion of potassium chlorate present is in the range from 40 to 60 percent dry weight.
- 4. A match head formulation in accordance with claim 1 wherein the binder is gelatine and is present in proportions ranging from 3 to 12 percent dry weight.
- 5. A match head formulation in accordance with claim 1 wherein the binder is animal glue.
- 6. A match head formulation in accordance with claim 1 wherein the thickener is a starch and is present in proportions of up to 5 percent dry weight.
- 7. A match head formulation in accordance with claim 1 wherein the foaming agent is Arylan PWS and is present in proportions of up to 0.2 percent dry weight.
- 8. A match head formulation in accordance with claim 1 wherein the filler is felspar or another silicaceous mineral.
- 9. A match head formulation in accordance with claim 1 wherein the formulation also contains an ash improver.
- 10. A match head formulation in accordance with claim 9 wherein the ash improver is infusoria and is present in proportions of up to 6 percent dry weight.
- 11. A match head formulation in accordance with claim 9 wherein the ash improver is a cellulose flour such as olivestone flour and is present in proportions of up to 7 percent dry weight.
- 12. A match head formulation in accordance with claim 1 wherein the formulation also contains a pigment.
- 13. A match head formulation in accordance with claim 12 wherein the pigment is iron oxide and is present in proportions ranging from 3 to 10 percent dry weight.
- 14. A match head formulation in accordance with claim 1 wherein the formulation also contains potassium hexacyanoferrate II and potassium hexacyanoferrate III as a sensitizer or ash improver, each in proportions of up to 7 percent dry weight.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9100308 |
Jan 1991 |
GBX |
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Parent Case Info
This is a divisional of application Ser. No. 07/817,936 filed on Jan. 8, 1992, now abandoned.
US Referenced Citations (9)
Non-Patent Literature Citations (1)
Entry |
Finch et al., "Matchmaking: Science Technology and Manufacturer", pp. 19-26, Ellis Horwood (John Wiley & Sons) (1983) New York. |
Divisions (1)
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Number |
Date |
Country |
Parent |
817936 |
Jan 1992 |
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