Method of producing fine particles

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C426S271000

Reexamination Certificate

active

07728070

ABSTRACT:
A method of producing cross-linked polymerisation hardened droplets in a continuous aqueous medium in a microchannel device is provided. At least two aqueous streams are brought together before entering a hydrophobic phase and thus forming droplets. One aqueous phase comprises an acid source and another comprises a metal ion salt. The slow release of metal ions slows down the rate of polymerisation so that it does not interfere with the droplet formation process.

REFERENCES:
patent: 2441729 (1943-12-01), Steiner
patent: 213 303 (1986-06-01), None
patent: 380 254 (1990-01-01), None
patent: 1 358 931 (2003-04-01), None
Sugiura et al., JAOCS 79, 515-519 (May 2002).

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