Composite particle dispersions

Details Composite particle dispersions Composite particle dispersions

1993-02-01

1994-03-22

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523201, 525286, C08L 3106

Patent

active

052965244

ABSTRACT:
A composite particle dispersion is prepared by mixing an aqueous dispersion of polymer particles which will form the particle shell with pre-formed polymer particles which will form the core at a temperature above the glass transition temperature for the shell particles. In order to ensure composite particle formation, certain interfacial energy criteria have to be satisfied for the core particle surface/shell particle surface/liquid interfaces. In order to allow the desired energy relationships to be established, the core particle surfaces include covalently attached ionic groupings which enable a permanent modification of the core particle surface to be made.

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patent: 4504609 (1985-03-01), Kuwajima et al.
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patent: 4731409 (1988-03-01), Miwa et al.
patent: 4997864 (1991-03-01), Waters
patent: 5162475 (1992-11-01), Tang et al.

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