Polyureas preparable from two polyetheramines and a prepolymer
AssigneeBASF SE
InventorsBerend Eling, Stephan Göttke, Ben Buylinckx, Wolfgang Mägerlein
Life of this patent
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Abstract
The invention relates to a polyurea preparable from a) a component A comprising a1) 5 to 40% by weight of at least one polyetheramine 1 (PEA 1), obtainable from at least one polyetherpolyol 1 (PEP 1) and at least one amine 1, where PEP 1 has an equivalent weight of ≦500, a2) 30 to 90% by weight of at least one polyetheramine 2 (PEA 2), obtainable from at least one polyetherpolyol 2 (PEP 2) and at least one amine 2, where PEP 2 has an equivalent weight of >500, a3) 5 to 30% by weight of at least one amine chain extender and b) a component B, which is a prepolymer, obtainable from b1) at least one polyetherpolyol (PEP 3) and b2) at least one isocyanate.
Claims15
A polyurea, obtained by a process comprising reacting
- a) a component A comprising
- a1) 5 to 40% by weight of at least one first polyetheramine (PEA 1), obtained by a process comprising reacting at least one first polyetherpolyol (PEP 1) and at least one first amine, wherein the PEP 1 has an equivalent weight of ≦500, and the PEA 1 has a nominal functionality of 2,
- a2) 30 to 90% by weight of at least one second polyetheramine (PEA 2), obtained by a process comprising reacting at least one second polyetherpolyol (PEP 2) and at least one second amine, wherein the PEP 2 has an equivalent weight of >500, and the PEA 2 has a nominal functionality of 2, and
- a3) 5 to 30% by weight of at least one aromatic amine chain extender
- and
- b) a component B, obtained by a process comprising reacting
- b1) at least one third polyetherpolyol (PEP 3), where PEP3 has an equivalent weight of >500 and a nominal functionality of 2, and
- b2) at least one isocyanate
- wherein the component B is a prepolymer.
Dependencies are inferred from the claim text.