Claims
- 1. The method of making a linear polymer comprising the steps of:
- (a) polymerizing an oxazoline of the formula ##STR5## thus producing a linear N-acylated polyethylenimine whose backbone consists essentially of about 8-22 repeating units of the formula ##STR6## wherein R is H or alkyl of 1-17 carbon atoms; (b) partially hydrolyzing the N-acylated polyethylenimine, thereby to replace about 10-95 percent of the acyl groups with H; and
- (c) partially acylating the product of Step (b), using an organic acid to introduce 0-50 percent acyl groups of about 20-150 carbon atoms thus to produce the polymer.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 597,791 filed July 21, 1975 and now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
597791 |
Jul 1975 |
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