Back to results
US 2016/0075816 A1Published application
A Method For Improving Toughness of Polyisocyanate Polyaddition Reaction Products
AssigneeHuntsman International LLC
InventorsHugo Verbeke, Hans Godelieve Guido Verbeke, Christian Esbelin, Ainara Astaburuaga Gutierrez
Life of this patent
Estimating the term…
Abstract
Use of compounds selected from polyols derived from dimer fatty acids and/or dimer fatty alcohols as toughening agent in a process for making polyisocyanate polyaddition reaction products, in particular for polyisocyanate polyaddition reaction products having a hardblock >40% and a process for making said products.
Claims17
A method for improving the toughness of polyisocyanate polyaddition reaction products having a glass transition temperature of at least 80° C. said method comprising at least reacting at an isocyanate index of at least 100:
- (a) isocyanates, and
- (b) isocyanate-reactive compounds, and optional
- (c) catalyst compounds, and optional
- (d) blowing agents and/or other auxiliary compounds
- characterized in that the isocyanate-reactive compounds (b) comprise 1-20 pbw of compounds selected from polyols derived from dimer fatty acids and/or dimer fatty alcohols (calculated on the total weight of ingredients (a)-(d)) and wherein the hardblock content of the polyisocyanate polyaddition reaction products is at least 40%.
2 more elements
Dependencies are inferred from the claim text.