Claims
- 1. Fuel briquets based upon fuels such as flaming coal, gas coal, semibutiminous coal, forge coal, anthracite, coke, brown coal or charcoal, containing binding agents and additives, obtained by briquetting of 80 to 99% by weight of an essential solid fuel, 0.1 to 19% by weight of a binding agent and 0.1 to 10% by weight of a cationic polyurethane obtained by a monomeric aliphatic dihydroxy compound, which displays at one of the atoms bound to the two dihydroxy groups an aliphatic residue with minimum 10 carbon atoms, being reacted with a polyisocyanate and an aliphatic monomeric diol containing tertiary nitrogen which in the obtaining of said cationic polyurethane is rearranged into its ammonium state; or obtained by reacting aforesaid monomeric aliphatic dihydroxy compound with a polyisocyanate and an appropriate aliphatic monomeric diol in which the nitrogen is present already in its ammonium state.
- 2. Fuel briquets containing binding agents according to claim 1, containing 80 to 99% by weight of charcoal.
- 3. Fuel briquets containing binding agents according to claim 1, characterized by 80 to 99% brown coal.
- 4. Fuel briquets containing binding agents according to claim 1, characterized by a brown coal containing, already in its natural state, a proportion of 5 to 10 percent of a natural constituent as binding agent.
- 5. Fuel briquets containing binding agents according to claim 1 characterized by a binding agent based on bitumen.
- 6. Fuel briquets containing binding agents according to claim 1, characterized by polyvinyl alcohol as synthetic binding agent.
- 7. Fuel briquets according to claim 6, characterized by a weight ratio of cationic polyurethane to polyvinyl alcohol from 1:3 to 3:1.
- 8. Fuel briquets according to claim 6, characterized by a polyvinyl alcohol of a viscosity from 0.003 Pa.s to 0.07 Pa.s.
- 9. Fuel briquets according to claim 6, wherein the polyvinyl alcohol is a fully saponified polyvinyl alcohol.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3017599 |
May 1980 |
DEX |
|
3114141 |
Apr 1981 |
DEX |
|
Parent Case Info
This is a continuation of application Ser. No. 261,709, filed May 8, 1981, abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0707699 |
Apr 1965 |
CAX |
50151241 |
Dec 1975 |
JPX |
0901789 |
Jul 1962 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 12, 2nd ed., Interscience Publishers, pp. 48-49. |
Ibid. vol. 15, pp. 794-796. |
The Encyclopedia of Chemistry, 3rd ed., Hanpel, C. A., Van Nostrand Reinhold Co., 1973, pp. 903-904. |
Continuations (1)
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Number |
Date |
Country |
Parent |
261709 |
May 1981 |
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