Polymer with ethylenic unsaturations incorporating silylmetalloc

Details Polymer with ethylenic unsaturations incorporating silylmetalloc Polymer with ethylenic unsaturations incorporating silylmetalloc

1985-06-28

1987-03-03

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253319, 5253321, 5253322, 5253328, 5253329, 5253311, 5253332, 149 192, C08F 842

Patent

active

046476288

ABSTRACT:
The invention relates to a polymer with ethylenic unsaturations incorporating silylmetallocene groups, a process for the manufacture of these polymers and a propellant composition having the polymer of the invention as a binder.
The polymer of the invention incorporates ethylenic unsaturations, to at least some of which there are added silylmetallocene groups of formula ##STR1## in which M denotes a transistion metal such as, for example, iron, the radicals R.sub.1, R.sub.2 and R.sub.3 being hydrocarbon 2 radicals. The polymer may be a hydroxytelechelic or carboxytelechelic polybutadiene. This modified polymer is employed as a binder in composite propellant compositions, thus making it possible to solve the problem related to the migration of the combustion catalyst.
The invention has application particularly in the field of solid propulsion.

REFERENCES:
patent: 3471440 (1969-10-01), Ashby
patent: 4115635 (1978-09-01), Blount
patent: 4230815 (1980-10-01), Itoh et al.
patent: 4385134 (1983-05-01), Foscante et al.
patent: 4405754 (1983-09-01), Moczygamba et al.
patent: 4524187 (1985-06-01), Greco et al.

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