| 摘要 |
Coated detergent tablets in which the coating not only protects the tablets against mechanical loads but is also rapidly disintegrable and/or soluble even without the addition of disintegration aids are provided with a coating which comprises polyurethanes formed from diisocyanates (I) and diols (II) O=C=N-R<1>-N=C=O (I), H-O-R<2>-O-H (II), the diols being selected at least fractionally from polyethylene glycols (II a) and/or polypropylene glycols (II b) H-(O-CH2-CH2)n-OH (II a), and R<1 >and R<2 >independently of one another standing for a substituted or unsubstituted, straight-chain or branched alkyl, aryl or alkylaryl radical having 1 to 24 carbon atoms, and n in each case standing for numbers from 5 to 2000.
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