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US 2007/0185255 A1Published application
Polyester oligomers
AssigneeDSM IP Assets B.V., TE HEERLEN, THE NETHERLANDS
InventorMatthew Terwillegar
Life of this patent
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Abstract
The present invention provides oligomers having a backbone and one or more curable groups. The backbone comprises a polyester that is prepared from, inter alia, one or more polyalkylesters.
Claims28
An oligomer comprising
- (1) a backbone comprising a polyester, said polyester being prepared by reacting at least the following reactants:
- (a) one or more polyalkylesters;
- (b) one or more polyols;
- and
- (c) optionally, one or more components selected from the group consisting of polycarboxylic acids, polycarboxylic anhydrides, and hydroxy-functional monocarboxylic acids;
- (2) one or more curable groups attached to said backbone;
- wherein said polyester has a number average molecular weight below 5,000 g/mol.
4 more elements
A process for making a polyester urethane (meth)acrylate oligomer, comprising:
- (1) preparing an oligomeric polyester polyol by reacting
- (a) one or more polyalkylesters;
- with
- (b) one or more polyols;
- and
- (2) reacting said oligomeric polyester polyol with
- (c) one or more polyisocyanates;
- and
- (d) one or more hydroxyfunctional (meth)acrylates.
6 more elements
Dependencies are inferred from the claim text.