Photocurable compositions based on acrylate polyester urethanes
AssigneeThiokol Corporation
InventorClaude J. Schmidle
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Abstract
Provided are processes for preparing compositions useful in photopolymerizable compositions, which processes comprise: A. reacting a polyether diol and an acrylic acid in about equal molar proportions; and B. 1. reacting a polyether diol and an acrylic acid in about equal molar proportions and 2. reacting the product of step B1, a hydroxyalkylacrylate and an organic diisocyanate in about equal molar proportions. Also provided are the products of these processes. These products are useful in photopolymerizable compositions which may typically contain, in addition to said products, N-vinyl-2-pyrrolidone and a photoinitiator.
Claims9
A process for preparing compositions for use in photopolymerizable compositions comprising:
- A. reacting a polyether diol and an acrylic acid in about equal molar proportions, and
- B. reacting the product of step A, a hydroxyalkyl acrylate and an organic diisocyanate in about equal molar proportions.
Dependencies are inferred from the claim text.