Process of making a stable solution of poly(hydroxystyrene) func

Details Process of making a stable solution of poly(hydroxystyrene) func Process of making a stable solution of poly(hydroxystyrene) func

1994-05-06

1995-03-07

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524 80, 524306, 524537, 526314, C08K 506, C08K 510, C08L 6900, C08F 1824

Patent

active

053958713

ABSTRACT:
Poly(hydroxystyrene) resins in which a portion of the hydroxyl groups are functionalized with t-butyloxycarbonyl groups ("t-Boc") tend to decompose during drying of the wet solid and on storage in the solid state. Solutions that are more stable than the solid material can be made from the wet freshly synthesized solid by dissolving the wet solid in a solvent that forms an azeotrope with water and then distilling the azeotrope of water and solvent from the solution until the solution contains less than about 1% by weight of water.

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