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Filtration & Separation Solutions

Embrace Ultimate Application Challenges of Filtration, Separation, and Purification Technology

Polycarbonate Manufacturing

Contaminations

In raw materials (solid and semi-solid gels)

From tanks and piping in contact with CH2Cl2 H which is corrosive

High molecular weight gels formed in the reaction process

Contaminations – The Problems

• Inability of the optical storage media/discs to store and retrieve information as quickly and accurately as possible

• Inaccuracies in writing and reading by a laser beam traversing a CD or DVD surface

• Cosmetic and strength-related defects in

• window glazing for buildings and automobiles

• various molded computer components

Benefits of Filtration

Consistently meet optical grade polycarbonate specification for particles 0.5 and larger (Particle measurement)

Achieve higher selling price commanded by optical grade PC, add significant revenue

Consistently meet industrial grade specification and appearance requirements for window glazing products and automotive components

Recommendations

Ref to Fig.1.	Fluid Processed	Filter Recommendation for Optical Grade PC	Filter Recommendation for General Grade PC
A	CH2CL2	PTFE Cartridge 10µm abs	PTFE Bag,10µm
B	BPA, Phenol, NaOH, Catalyst	JAF/ELCPP 2µm abs	JAF/ELCPP 10µm abs
C	Phosgene	CWFG, FCN, 10µm abs	CWFG FCN 20µm abs
D	PC-CH2CL2 Mix	CWFG, FCN, 40µm abs	Same
E	PC-CH2CL2 Mix	PTFE Cartridge	Not used
F	PC-CH2CL2 Mix	PTFE Cartridge, 1µm	PTFE cartridge, 10µm abs
G	Raw Water	JAF 5µm abs	Same
H	Filtered Raw Water	JAF/ Rocket Bag 2µm abs	Same
I	DI Water	JAF/ Rocket Bag 2µm abs	Same
J	Raw Water	JAF 20µm abs	Same
K	Filtered Raw Water	JAF 25µm abs	Same

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