Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1985-10-11
1987-11-17
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...
5253271, 5253282, 5253287, 5253294, 5253299, 5253302, 5253305, 5253306, 5253333, 5253336, 525367, 525368, 525371, 530402, 530409, 536 38, C02F 842
Patent
active
047075236
ABSTRACT:
Metal oxide containing polymers and particularly styrene, acrylic or protein polymers containing fine, magnetic iron oxide particles are formed by combining a NO.sub.2 -substituted polymer with an acid such as hydrochloric acid in the presence of metal, particularly iron particles. The iron is oxidized to fine, black Fe.sub.3 O.sub.4 particles which deposit selectively on the polymer particles. Nitrated polymers are formed by reacting functionally substituted, nitrated organic compounds such as trinitrobenzene sulfonate or dinitrofluoro benzene with a functionally coreactive polymer such as an amine modified acrylic polymer or a protein. Other transition metals such as cobalt can also be incorporated into polymers using this method.
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Chang Manchium
Colvin Michael S.
Rembaum Alan
Richards Gil F.
California Institute of Technology
Jacobs Marvin E.
Lipman Bernard
Schofer Joseph L.
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