Continuous resin recovery apparatus and recovery method

Details Continuous resin recovery apparatus and recovery method Continuous resin recovery apparatus and recovery method

2006-06-06

2006-06-06

Boykin, Terressa (Department: 1711)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C422S131000, C526S067000, C528S420000, C528S50200C

Reexamination Certificate

active

07057011

ABSTRACT:
The present invention provides a continuous resin recovery method for recovering resin from which foreign matters and volatile components are sufficiently removed and which is highly purified and suitable for optical use. The continuous resin recovery method comprises heating a resin solution in a heating pipe at a temperature at least the boiling point of the solvent, introducing the resin solution heated at a temperature at least the boiling point of the solvent into a rough drying chamber maintained at a reduced pressure, separating the resin from the solvent vapor in the rough drying chamber, melting the separated resin, introducing the molten resin in a precise drying chamber kept at a reduced pressure, and passing the molten resin through a perforated plate in the precise drying chamber.

REFERENCES:
patent: 6150498 (2000-11-01), Abel et al.
patent: 55-15645 (1980-02-01), None
patent: 6-32821 (1994-02-01), None
patent: 2002-119811 (2002-04-01), None
patent: 2003-137922 (2003-05-01), None
patent: WO 03/004550 (2003-01-01), None

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