Loading patent…
AssigneeBASF SE
InventorsGuenter Matzke, Peter Horn, Hans U. Schmidt
Estimating the term…
The subject of this invention is elastomers containing polyamide groups and polyurea groups in bonded form, which are prepared by the reaction of (a) at least one organic polyisocyanate and/or a modified polyisocyanate mixture having an NCO content of from 8 to 33.6 weight percent, (b) at least one polyazomethine and (c) at least one alkyl-substituted aromatic polyamine having a molecular weight up to 500, in the presence of or in the absence of (d) catalysts, whereby reaction products of polyoxyalkylenepolyamines, having a functionality of from 2 to 4 and an average molecular weight of from 180 to 10,000 and at least one organic aldehyde and/or preferably ketone, are used as the polyazomethines.
An elastomer containing polyamide groups and polyurea groups in bonded form prepared by reacting
A process for the preparation of an elastomer consisting of reacting
A polyketimine comprising reacting polyoxyalkylenepolyamine having a functionality of from 2 to 4 and a molecular weight of from 180 to 10,000, selected from the group consisting of polyoxyethylenepolyamine, polyoxypropylenepolyamine, polyoxytetramethylenepolyamine, polyoxypropylenepolyoxyethylenepolyamine, polyoxytetramethylenepolyoxypropylenepolyamine and/or polyoxytetramethylenepolyoxyethylenepolyamine, with an aliphatic and/or cycloaliphatic ketone selected from the group consisting of methylisobutylketone, methylcyclohexanone, cyclohexanone and cyclopentanone.
Dependencies are inferred from the claim text.