SEMI-CONTINUOUS TWO-COMPONENT METHOD FOR OBTAINING A COMPOSITE EXPLOSIVE CHARGE WITH POLYURETHANE MATRIX
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United States of America Patent
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Feb 15, 2011
Grant Date -
Mar 10, 2011
app pub date -
Nov 17, 2006
filing date -
Nov 24, 2005
priority date (Note) -
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Abstract
The present invention relates to a semi-continuous method for obtaining a composite explosive charge comprising a solid polyurethane matrix loaded with a charge, the charge being in powder form and comprising at least one nitro-organic explosive. The said method comprises the following successive steps:the obtaining of a pasty explosive composition comprising essentially the following ingredients:a polyol pre-polymer,a polyisocycanate monomer,a plasticising agent, anda solid charge in powder form comprising at least one nitro-organic explosive,in that the continuous mixing of the said components A′ and B′ is carried out in such a way that the weight ratio between component A′/component B′ is constant, being between 95.05/4.95 and 99.55/0.45.The said method constitutes a particularly interesting improvement of the method according to EP-A-1 133 015.
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