Varnish protecting a caseless or combustible-case round of ammun

Details Varnish protecting a caseless or combustible-case round of ammun Varnish protecting a caseless or combustible-case round of ammun

1986-11-13

1988-08-30

Miller, Edward A.

Ammunition and explosives

Powder form

Having burning inhibiting means

F42B 518

Patent

active

047668121

ABSTRACT:
The invention concerns a protective varnish applied to a caseless or combible-case round of ammunition against thermoinitiation. This varnish includes at least one reactive layer applied to the ammunition, consisting of a synthetic resin and an oxidizer with a decomposition temperature above 350.degree. C., and at least one insulating layer applied to the reactive layer consisting of a synthetic resin and a heat insulating compound. The resins are of the polyurethane, alkyd or oleophenolic type and the oxidizer is selected from the group constituted by potassium perchlorate, lead or barium chromate according to a percentage by mass varying from 1 to 20%. The insulating compound is represented by organic or mineral microballoons. The varnish may include an inner resin layer interposed between the ammunition and the reactive layer, an an outer resin layer applied to the insulating layer. Application to the rounds of ammunition of any caliber.

REFERENCES:
patent: 3877374 (1975-04-01), Cook
patent: 3927616 (1975-12-01), Axelrod et al.
patent: 4091729 (1978-05-01), Bell et al.
patent: 4187781 (1980-02-01), Flanagan et al.
patent: 4239073 (1980-12-01), Reed et al.
patent: 4363273 (1982-12-01), Luebben et al.
patent: 4365558 (1982-12-01), Leppler et al.
patent: 4530728 (1985-07-01), Sayles

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