FERROCENE CONTAINING MONOMERS AND COPOLYMERS
First Claim
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1. A POLYMERIZABLE MONOMER SELECTED FROM PENTAERYTHRITOL METHACRYLATE TRIS (FERROCENOATE) AND PENTAERYTHRITOL ACRYLATE TRIS (FERROCENOATE) REACTED WITH BUTADIENE TO FORM A COPOLYMER.
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Abstract
The ferrocene-containing polymerizable monomers, pentaerythritol methacrylate tris (ferrocenoate) and pentaerythritol acrylate tris (ferrocenoate), are disclosed along with the pertinent preparative procedures therefor. The specified ferrocenecontaining monomers when copolymerized with butadiene serve as the propellant binder and catalyst for fast-burning composite propellants. The copolymers perform the functions of binder and catalyst in a propellant composition containing ammonium perchlorate, a plasticizer, and aluminum metal fuel.
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5 Claims
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1. A POLYMERIZABLE MONOMER SELECTED FROM PENTAERYTHRITOL METHACRYLATE TRIS (FERROCENOATE) AND PENTAERYTHRITOL ACRYLATE TRIS (FERROCENOATE) REACTED WITH BUTADIENE TO FORM A COPOLYMER.
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2. The copolymer of claim 1 wherein said butadiene and said selected monomer are reacted in the presence of a suitable initiator contained in a suitable organic solvent for a predetermined period of time and at a predetermined temperature;
- said butadiene and said selected monomer being present in a mole ratio of butadiene to monomer from about 40 to 1 to about 80 to
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3. The copolymer of claim 2 wherein said selected monomer is pentaerythritol acrylate tris (ferrocenoate);
- said suitable solvent is toluene;
said predetermined period of time is about 72 hours;
said predetermined temperature is from about 66*C to about 67*C; and
said suitable initiator is azo-bis-(2-methyl-5-hydroxy-valeronitrile).
- said suitable solvent is toluene;
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4. The copolymer of claim 2 wherein said selected monomer is pentaerythritol methacrylate tris (ferrocenoate);
- said suitable solvent is toluene;
said predetermined period of time is about 72 hours;
said predetermined temperature is from about 66*C to about 67*C; and
said suitable initiator is azo-bis-(2-methyl-5-hydroxyvaleronitrile).
- said suitable solvent is toluene;
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5. The copolymer of claim 4 characterized by a molecular weight in the range from about 3500 to about 4700, OH end groups from about 0.8 to 1.2 weight percent, and Fe content from about 3.9 to about 6.9 weight percent.
Specification