Watergel explosives containing microspheres
CA 1114172 A · Owner: Nitro Nobel Ab · Inventors: Ekman, Gunnar O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The disclosure describes a process for the manufacture of water gel explosives with improved performance characteristics, which explosives contain combustible materials oxidizing agents, a gelling agent, water sensitizers, and, expanded thermoplastic microspheres as gas carriers. The manufacture is carried out in various successive steps. In a first step, the microspheres are expanded in a concentrated solution or eutectic melt consisting of part of the components of the explosive, the solution or melt having an oxygen balance which does not make the solution or. melt a safety risk at the temperature required for the expansion of the microspheres. Then, in one or more steps at a lower …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents.
Why it's free to use
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.