Vapor precipitation of polymers from solvent polymer blends by a

Details Vapor precipitation of polymers from solvent polymer blends by a Vapor precipitation of polymers from solvent polymer blends by a

1997-01-13

1998-10-06

Marquis, Melvin I.

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

Synthetic resins

From silicon reactant having at least one...

528196, 528272, 528501, 203 51, 203 90, C08G 7700

Patent

active

058177299

ABSTRACT:
A process for removing contaminating solvents from solutions containing solid solutes comprising contacting a co-solvent that forms an azeotrope with the contaminating solvent forming a mixture thereby and spray drying the contaminating solvent co-solvent mixture in the presence of the co-solvent at a temperature equal to or above the temperature where the azeotrope distills whereby the contaminating solvent has been azeotropically distilled away from the solute. The process is particularly useful for polymeric solutes, especially silicones.

REFERENCES:
patent: 2676182 (1954-04-01), Daudt et al.
patent: 5248087 (1993-09-01), Dressler
patent: 5319040 (1994-06-01), Wengrovius et al.
patent: 5324806 (1994-06-01), Wengrovius et al.
patent: 5357007 (1994-10-01), Wengrovius et al.

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