Appeal No. 95-0878
Application 07/921,820
... the present invention in one embodiment is directed to toner compositions
comprised of substituted polyoxazolines, linear polyethyleneimine polymers, or mixtures
thereof of the following formulas [-CH -CH -N(COCF )-] ; [-CH -CH -N(COCF )-2 2 3 n 2 2 3
CH -CH -N(COCH )-] ; [-CH -CH -N(CO(CH ) CH )-] ; 2[-CH -CH -
2 2 3 n 2 2 2 16 3 n 2 2
N(SiMe OCH CF )-] ; [-CH -CH -N(SiMe CH CF )-] ; [-CH -CH -N(COCF CF -2 2 3 n 2 2 2 2 3 n 2 2 2 2
CF )-] ; [-CH -CH -N(COCH CF CF CF )-] ; wherein Me represents CH and n is3 n 2 2 2 2 2 3 n 3
a number of from 10, preferably 15, to about 100. [Specification: p. 7, lines 1-8.]
* * *
The polymers of the present invention can be prepared by the cationic thermal
polymerization of 2-substituted oxazolines, or alternatively, by derivatizing linear
polyethyleneimine with, for example, acyl chlorides, anhydrides, chlorosilanes, and other
reagents known to react with secondary amines and polyamines. Linear polyethyleneimine
can be prepared by the basic or preferably the acidic hydrolysis of poly(2-substituted-
oxazolines), like poly(2-methyl-oxazoline), poly(2-ethyl-2-oxazoline) or poly(2-phenyl-2-
oxazoline). Poly(trifluoroacetylethleneimine) can be prepared by the thermal cationic
polymerization of 2-trifluoromethyl-2-oxazoline or by the reaction of linear
polyethyleneimine with either trifluoroacetic anhydride or trifluoroacetyl chloride.
[Specification: p. 8, lines 6-17.]
Appellants point to their working examples in the specification which describe the preparation of poly(2-
phenyl-2-oxazoline) by heating 2-phenyl-2-oxazoline with 2-phenyl-2-oxazolium perchlorate (Example III),
the hydrolysis of poly(2-phenyl-2-oxazoline) to form linear polyethyleneimine (Example IV), the
preparation of poly(2-ethyl-2-oxazoline) by heating 2-ethyl-2-oxazoline with 2-phenyl-2-oxazolium
perchlorate (Example V), the hydrolysis of poly(2-ethyl-2-oxazoline) to form linear polyethyleneimine
(Examples VI and VII), the preparation of poly(trifluoroacetyl-ethyleneimine) by reacting linear
polyethyleneimine with sodium trifluoroacetate (Example VIII), and the preparation of
-5-
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