| 摘要 |
<p>Improved fuel briquettes contain about 80 to 99%, by weight of a substantially solid fuel, about 0.1 to 19%, by weight of a natural or synthetic bonding agent, and about 0.1 to 10%, by weight of a cationic polyurethane; the improved briquettes have high resistance to cold, high fire strength, high combustion efficiency and are readily handled without breaking up.</p> |
