Explosive and thermic compositions or charges – Structure or arrangement of component or product – Coated component
Patent
1983-12-27
1985-08-27
Lechert, Jr., Stephen J.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
Coated component
149 46, 149 76, 149 88, 149 96, 149101, 149123, 252 6254, 252 6256, C06B 4518
Patent
active
045376450
ABSTRACT:
The invention provides a novel magnetically traceable or detectable explosive blended with a magnetic ferrite powder which facilitates the detection of the misfired explosive, e.g. dynamite, remaining in the field after blasting by a magnetic means but not to adversely affect the stability of the explosive. The ferrite powder is freed of any free alkalinity on the surface before blending with the explosive either by washing with water, neutralization with a dilute acid, reaction with an acid followed by washing with water or neutralization with an alkali and/or by coating with a polymeric material on the particles. The most efficient method for the coating of the ferrite powder with a polymeric material is the in situ polymerization of a radical-polymerizable monomer in contact with the ferrite particles in the presence of hydrogensulfite ions and the explosives blended with such a polymer-coated ferrite powder retain their stability even after a prolonged storage.
REFERENCES:
patent: 3737349 (1973-06-01), Levenson
patent: 4120806 (1978-10-01), Watanabe et al.
patent: 4198307 (1980-04-01), Berkowitz
patent: 4222330 (1980-09-01), Krystyniak
patent: 4282302 (1981-08-01), Makino et al.
patent: 4363678 (1982-12-01), Nishimura et al.
Hirata Michitoshi
Ono Takayuki
Yamaguchi Tadashi
Yokoyama Toshihiko
Lechert Jr. Stephen J.
Taisei Corporation
Tohoku Metal Industries Ltd.
LandOfFree
Magnetically traceable explosives with stability and a method fo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetically traceable explosives with stability and a method fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetically traceable explosives with stability and a method fo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2000335