Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-11-26
1993-11-02
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525178, 525185, 525186, 525189, 525199, 525420, 525425, 525433, 525436, 525439, 525462, 430270, C08L 2714, C08L 2716, C08L 6702, C08L 6900
Patent
active
052584615
ABSTRACT:
Polymer films are formed by electrocodeposition of solutions containing a dispersion of charged particles of a first polymer and charged particles of a second polymer. Microheterogeneous films are obtained having micro-domains of a minor component polymer dispersed in the major component polymer. Processes for preparing dispersions for electrocodeposition are also provided In a first process, two polymers are dissolved in a common solvent and then dispersed as small charged particles in another solvent which is a precipitant for both polymers. In another process, a dispersion of a first polymer is prepared by adding a solution of the first polymer to a dispersant solvent, and then a solution of a second polymer is dispersed in the dispersion of the first polymer. In another process, a solution of the second polymer is added to a dispersion of the first polymer which contains only a single non-solvent for the second polymer. In yet another process, a dispersion of the first polymer in a first solvent system is mixed directly with a dispersion of a second polymer in a second solvent system, resulting in a dispersion of the first and second polymers in a resulting solvent system of the first and second solvent systems. In yet another process, a block copolymer composed of two blocks is dissolved in a solvent, and then dispersed in a non-solvent to form the dispersion.
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"Seamless Conductive Substrate for Electrophotographic Applications"-W. W. Limburg et al-Xerox Disclosure Journal, vol. 14, No. 2, Mar./Apr. '89.
De Paoli et al "Conductive Composites for Poly (vinyl chloride) and Polypyrrole", J. Chem. Soc., Chemm. Commun., 1984, pp. 1015-1016.
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Facci John S.
Herbert William G.
Jansen Ronald E.
Mammino Joseph
Pan David H.
Kight III John
Sergent Rabon
Xerox Corporation
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