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US 7,001,981 B2Granted
Acrylated natural resins
AssigneeSun Chemical Corporation
InventorKai-Uwe Gaudl
Life of this patent
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Abstract
A method of acrylating a resin containing one or more hydroxyl functional group and derived from a natural product, comprising preparing a mixture of a hydroxyalkyl acrylate and an isocyanate; and reacting said mixture with said resin.
Claims13
A method of acrylating a rosin ester resin, comprising:
- preparing a mixture of a hydroxyalkyl acrylate and a polyfunctional isocyanate;
- and reacting said mixture with rosin ester resin derived from a natural product and which contains more than one hydroxyl functional group and is not a disproportionated rosin resin.
The method of claim 9, wherein the preparation of mixture of hydroxyalkyl acrylate and an isocyanate is carried out in the presence of a catalyst.
Dependencies are inferred from the claim text.