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US 2017/0283545 A1Published application
A method for improving fracture toughness of polyisocyanurate comprising reaction products
AssigneeHuntsman International LLC
InventorSteve Andre Woulters
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Abstract
A curable composition for making polyisocyanurate comprising products obtained by combining and mixing at an isocyanate index of at least 100 at least a polyisocyanate composition, an isocyanate reactive composition comprising at least 50 mol % diols and a toughening agent comprising acrylic block copolymers.
Claims21
A curable composition for making polyisocyanurate comprising products, obtained by combining and mixing at an isocyanate index of at least 100:
- a) A polyisocyanate composition,
- b) An isocyanate reactive composition comprising at least 50 mol %, preferably at least 70 mol %, more preferably at least 90 mol % diols calculated on the total number of mol isocyanate reactive compounds in the isocyanate-reactive composition,
- c) A toughening agent comprising acrylic block copolymers,
- d) A trimerization catalyst composition, and
- e) Optionally further additives and/or auxiliary compounds,
- wherein the amount of polyisocyanates in the curable composition comprises at least 50 wt % polyisocyanates calculated on the total weight of the reactive curable composition.
3 more elements
Dependencies are inferred from the claim text.