Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-10-23
2007-10-23
Niland, Patrick (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S501000, C524S543000, C524S544000, C524S545000, C524S546000, C524S555000, C524S556000, C524S600000, C524S601000, C524S602000, C524S612000
Reexamination Certificate
active
10637449
ABSTRACT:
This invention provides processes for isolating particles from an emulsion including the steps of: (a) forming an emulsion having a solid component having a population of particles, a liquid component, and a first ionic forming compound, wherein the presence of the first ionic forming compound in the emulsion does not result in the coagulation of the population of particles contained therein; (b) obtaining a composition having a second ionic forming compound which, by itself, is not sufficient to result in the coagulation of the population of particles contained in the emulsion; and (c) mixing the emulsion and the composition having the second ionic compound such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles. The invention also provides processes for preparing a polymer matrix system using the aforementioned process for isolating particles from an emulsion. In these processes, the plastic matrix system is prepared by adding, to a plastic resin, the emulsion and the composition having the second ionic forming compound, such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles.
REFERENCES:
patent: 2023296 (1935-12-01), Trobridge
patent: 2494002 (1950-01-01), Rumbold
patent: 3793402 (1974-02-01), Owens
patent: 5221713 (1993-06-01), Kempner et al.
patent: 5312575 (1994-05-01), Wills
patent: 1155531 (1969-06-01), None
patent: 1101775 (2001-05-01), None
Coyle Robert William
Wills Morris Christopher
Clikeman Richard R
Niland Patrick
Rohm and Haas Company
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