Back to results
US 4,543,137 AGranted
Water-in-oil emulsion explosive composition
AssigneeNippon Oil and Fats Co., Ltd.
InventorsKoji Edamura, Akio Torii, Kazuyuki Sato, Hiroshi Sakai
Life of this patent
Estimating the term…
Abstract
A gas-retaining agent consisting of bubble assemblies, each bubble assembly being one particle consisting of a large number of bubbles agglomerated into the particle, is effective for improving the safety of water-in-oil emulsion explosive compositions against methane and coal dust, for improving the sympathetic detonability of the explosive compositions and for lowering their detonation velocity without deteriorating their strength.
Claims12
In a water-in-oil emulsion explosive composition comprising a continuous phase consisting of a carbonaceous fuel component;
- a disperse phase consisting of an aqueous solution of inorganic oxidizer salt;
- an emulsifier and a gas-retaining agent, the improvement comprising the explosive composition containing, as the gas-retaining agent, 0.05-40% by weight based on the total amount of explosive composition of bubble assemblies, each bubble assembly being one particle consisting of a large number of bubbles agglomerated into the particle.
Dependencies are inferred from the claim text.