| PATENT ASSIGNEE'S COUNTRY | Germany |
| UPDATE | 10.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Method of production of fully biodegradable shaped bodies, including sheet structures, wherein the said bodies are made from a PU as its aq dispersion or from granules obtained by spray drying said dispersion, wherein PU contain urea groups & is the reaction prodt which is prepd by known methods, observing a ratio of equiv og NCO to NCO-reactive groups of 1:1 to 2:1 from (a) Hexamethylene diisocyanate (b1) Polyesterdiol with MW which can be calculated from the -OH content of 500-10,000 which is reaction prodt of (i) adipic &/or succinic acid & (ii) 2-6C alkanediol (c1) Diaminosulfonate of formula H2N-(CH2)2-NH-(CH2)2-SO3M; M = K or Na |
| PATENT PHOTOCOPY | Available on request |
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