Recovery of vinyl chloride resin with aid of screen

Details Recovery of vinyl chloride resin with aid of screen Recovery of vinyl chloride resin with aid of screen

1986-01-29

1989-02-07

Henderson, Jr., Christopher A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

209 17, 528491, 528497, 528502, C08F 624, C08F 614

Patent

active

048032603

ABSTRACT:
A recovery method of vinyl chloride resin which comprises formulating an aggregate of vinyl chloride resin by adding to an aqueous dispersion of vinyl chloride resin an organic liquid which is difficultly soluble in water and does not dissolve or swell vinyl chloride resin and mixing the two; dehydrating the aggregate; and drying the same to recover granular vinyl chloride resin, the characteristic feature residing in that said aqueous dispersion is the one which has passed through the screen of 20 to 150-micron meshes.

REFERENCES:
patent: 2613191 (1952-10-01), McGaffin
patent: 2624718 (1953-01-01), Bezman
patent: 3545093 (1970-12-01), Forster
patent: 4604454 (1986-08-01), Nishina et al.
Processes for Major Addition-Type Plastics and Their Monomers, p. 244, Albright, 1984.

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