| 摘要 |
A description is given of polyisocyanates of the formula Iin whichR and R' are identical or different and are alkyl groups having 1-4 carbon atoms andn is on average from 1.5 to 5and also of a process for preparing these polyisocyanates in which a polyamine of the formula IIin which R, R', and n are as defined above, is reacted with phosgene. The new polyisocyanates are suitable for producing crosslinked polyurethanes from reaction mixtures with low solvent content and for producing coating compositions or adhesives. Also described are the coating compositions and adhesives, and their use.
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