Poly(2-oxazoline)s and methods for preparing them
AssigneeUniversiteit Gent
InventorsRichard Hoogenboom, Ondrej Sedlacek
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Abstract
The present invention, in general, relates to the field of poly(2-oxazolines) (PAOx), more in particular poly(2-methoxymethyl-2-oxazoline) (PMeOMeOX) and poly(2-dimethylamino-2-oxazoline) (PDMAOx). The present invention also provides methods for preparing these PAOx, as well as compositions and uses comprising said PAOx.
Claims15
1-12. (canceled)
A polyoxazoline selected from the group consisting of poly(2-methoxymethyl-2-oxazoline), poly(2-dimethylamino-2-oxazoline), and copolymers having at least one monomeric unit of poly(2-methoxymethyl-2-oxazoline) or poly(2-dimethylamino-2-oxazoline).
A composition, comprising:
- at least one polyoxazoline according to claim 1;
- and
- at least one active ingredient.
A method for preparing a superhydrophilic poly(2-oxazoline), the method comprising:
- (a) hydrolysing a starting polyoxazoline by controlled acidic hydrolysis of side-chains of the starting polyoxazoline with at least 95% hydrolysis to obtain a linear polyethyleneimine;
- and
- (b) re-acylating side-chains of the linear polyethyleneimine obtained from (a) using carboxylic acid, carboxylic acid chloride, carbamic acid, carbamic acid chloride, an activated ester, or an activated carbamic ester, to reacylate at least 95% of secondary amine groups of the linear polyethyleneimine and obtain the superhydrophilic poly(2-oxazoline).
Dependencies are inferred from the claim text.