| 摘要 |
this invention relates to storage-stable, liquid, partially trimerized polyisocyanates having an NCO group content of 24 to 40 % by weight, and comprising 20 to 88 % by weight of toulene diisocyanate and 12 to 80 % by weight of a polyisocyanate of the diphenylmethane series. The present invention also relates to a process for the preparation of the storage-stabl e, liquid, partially trimerized polyisocyanates; to storage-stable, liquid urethane prepolymers of these partially trimerized polyisocyanates; and to a process for the production of these storage-stable, liquid, urethane prepolymers.
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