Polyurethane material with a high temperature resistance
AssigneeBASF SE
InventorsAndre Meyer, Andreas Emge
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Abstract
Described herein is a process for preparing a polyurethane-type fiber composite material, said process including (a) di- and/or polyisocyanates, (b) compounds having isocyanate-reactive hydrogen atoms, (c) compounds including at least one carbon-carbon double bond, (d) optionally a catalyst to hasten a urethane reaction, (e) optionally a free-radical initiator, and (f) optionally further auxiliary and added-substance materials, being mixed into a reaction mixture—with concomitant wetting of a fiber material—and cured. Also described herein is a polyurethane-type fiber composite material obtainable by a process described herein and also to a method of using the polyurethane-type fiber composite material as a structural component part.
Claims15
A process for preparing a polyurethane material, said process comprising
- a) di- and/or polyisocyanates,
- b) compounds having isocyanate-reactive hydrogen atoms,
- c) compounds comprising at least one carbon-carbon double bond,
- d) optionally a catalyst to hasten a urethane reaction,
- e) optionally a free-radical initiator, and
- f) optionally further auxiliary and added-substance materials,
- being mixed into a reaction mixture and cured, wherein
- the compounds having isocyanate-reactive hydrogen atoms contain on average not less than 1.5 isocyanate-reactive hydrogen groups per molecule,
- a double bond density of compound (c) is not less than 21% and a double bond functionality of compound (c) is greater than 1 and said compound (c) has no isocyanate-reactive groups and no further compounds having isocyanate-reactive hydrogen atoms are used aside from compounds of component (b), and
- an equivalence ratio between isocyanate groups of di- and/or polyisocyanates (a) and the isocyanate-reactive hydrogen atoms is in the range from 0.8 to 2.
(canceled)
Dependencies are inferred from the claim text.