Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-09-30
1996-12-31
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523340, 528501, 159 131, 159 49, 524556, C08L 3304
Patent
active
055895255
ABSTRACT:
The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.
REFERENCES:
patent: 3306341 (1967-02-01), Pugh et al.
patent: 3849361 (1974-11-01), Zweigle
patent: 4029622 (1977-06-01), Keller et al.
patent: 4299755 (1981-11-01), Keggenhoff et al.
patent: 4528321 (1985-07-01), Allen et al.
patent: 4533432 (1985-08-01), Goldmann et al.
patent: 4803264 (1989-02-01), Krijnen
Frederick Kevin W.
Hunter Wood E.
Loeffler Randy J.
Calgon Corporation
Merriam Andrew E. C.
Michl Paul R.
Mitchell W. C.
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