Compositions – Electrolytes for electrical devices
Patent
1988-12-05
1991-02-19
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
252 496, 252565, 102431, C10M10750
Patent
active
049942034
ABSTRACT:
The invention relates to a composite material with lubricating properties consisting of a solid polymeric matrix such as polystyrene or polymethyl methacrylate containing between 20 and 85% by weight of a liquid oil with lubricating properties, such as a silicone oil.
The material according to the invention is obtained by polymerization of an emulsion of the said oil in a monomer such as styrene or methyl methacrylate monomer in the presence of a surface-active agent which is a two- or three-block block copolymer in which one repeat unit is compatible with the said monomer.
The materials according to the invention are used to form antierosive components for ammunition intended for barrel weapon systems and in particular wads (8) for shells (1).
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patent: 4263070 (1981-04-01), Price et al.
patent: 4282813 (1981-08-01), Sterbatzel
patent: 4365558 (1982-12-01), Lippler et al.
patent: 4465883 (1984-08-01), Lopata et al.
patent: 4532054 (1985-07-01), Johnson
patent: 4623472 (1986-11-01), Jamison et al.
LeFumeux Alain
Raynal Serge
Howard Jacqueline V.
Societe Nationale des Poudres et Explosifs
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