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US 5,143,995 AGranted
Adhesives based on polyols and polyisocyanates
AssigneeBayer Aktiengesellschaft
InventorsWalter Meckel, Eduard Hansel, Otto Ganster, Gunter Arend, Jorg Buchner
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Abstract
Disclosed herein is a transparent adhesive containing isocyanate groups based on at least one polyol and at least one polyisocyanate, characterized in that the adhesive contains urea groups.
Claims10
A transparent adhesive containing isocyanate groups based on at least one polyol and at least one polyisocyanate, characterized in that the adhesive contains a urea group corresponding to the following formula
- X--R--NH--CO--NH--R'--Y
- in which
- X and Y may be the same or different and represent NCO and/or --Z--CO--NH--, X and Y being attached to R and R' via the N atom of the NH group,
- Z represents O, S, NH,
- R and R' may be the same or different and represent the residue of a polyisocyanate containing at least two NCO groups of different reactivity after removal of the two NCO groups.
2 more elements
Dependencies are inferred from the claim text.