MANUFACTURE OF CELLULAR OR NON-CELLULAR POLYURETHANE PLASTIC BY EMPLOYING DIANHYDROHEXITE DIOL

A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of (a) organic polyisocyanates; (b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000; (c) chain extenders, and, optionally, additional...

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Bibliographische Detailangaben
Hauptverfasser:	HERUBERUTO ZARUTSUBURUKU, HORUGAA MAIBORUKU, KUUNOO BUAAGUNAA, JIEEMUSU MIHIYAERU BARUNESU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of (a) organic polyisocyanates; (b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000; (c) chain extenders, and, optionally, additional (d) short-chained compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having a molar mass of from 32 to 400, as well as, optionally, (e) catalysts, blowing agents and other known additives, is described, which is characterized in that 1,4-3,6-dianhydro-hexites, preferably 1,4-3,6-dianhydro-D-sorbitol and/or 1,4-3,6-dianhydro-D-mannitol, optionally mixed with lower molecular weight compounds, preferably with polyols having a molecular weight of from 62 to 400, particularly preferably butane diol-1,4 are used as the chain extenders. The new chain extenders produce high quality elastomers and foams.