Main > POLYMERS > Poly(UrethaneUrea) > BioDegradable > Compostable > Plastics (Sheet structures). > Reaction Prodt of > Hexamethylene diisocyanate (a) > Aliphatic Polyester Diol (b1) > Aliphatic DiaminoSulfonate (c1)

Product DE. B

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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