Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1981-02-27
1982-10-19
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526 72, C08F 222
Patent
active
043551424
ABSTRACT:
Method for homogenizing a monomer mix for making latexes, such as polyvinyl chloride latexes, comprising pumping the mix to a shearing means, shearing said mix by means of the rotating shearing means having multiple shearing surfaces while conveying it into rotating channels in the shearing means where the mix is subjected to centrifigal forces, conveying the mix from the rotating channels into stationary channels, repeating the preceding steps at least once, conveying the mix into a chamber which completes the first stage of a homogenizer, conveying the mix from the first stage through at least one more stage, recirculating the mix through the first stage and the additional stage or stages 3 to 25 times, and then conveying the mix to the polymerization reactor where the latex of improved colloidal stability is obtained as determined by a drastic reduction in polymer build-up on reactor interior and coagulum in the latex.
REFERENCES:
patent: 3296168 (1967-01-01), Jirik
Tekmar Company, "Dispersing with Original IKA".
Khungar Sohan L.
Shah Suresh R.
Kap George A.
Michl Paul R.
The B. F. Goodrich Company
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