C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/32 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2079245
The invention relates to thermoplastic polyurethane elastomers obtainable by inaction of a) unmodified and/or modified organic polyisocyanates, preferably 4,4'- diisocyanatodiphenylmethane, with b) polyoxybutylene glycols and/or polyoxybutylene/polyoxyalkylene glycols with a molecular weight of from 150 to 1800 and a content of crown ethers, preferably those of the formula (-CH2CH2CH2CH2O-)m, where m is from 3 to 6, not exceeding 0.06% of the total weight and c) chain extenders with a molecular weight of from 60 to 400, preferably 1,4-butanediol, to a process for the preparation thereof and to the use thereof for producing molded articles and sheets for use in the medical or hygiene sector and in the foodstuffs sector.
Groll Peter
Mueller Herbert
Straehle Wolfgang
Basf Aktiengesellschaft
Groll Peter
Mueller Herbert
Robic
Straehle Wolfgang
LandOfFree
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