(POLY)OL BLOCK COPOLYMER

(Poly)ol block copolymers having a polycarbonate or polyether carbonate, polyester and polyether or ethercarbonate blocks of structureC-B-A′-Z′-Z-(Z′-A′-B-C)nwherein n=t−1 and wherein t=the number of terminal OH group residues on the block A; andwherein each A′ is independently a polycarbonate chain...

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Bibliographische Detailangaben
Hauptverfasser:	KEMBER, Michael, RILEY, Kerry, LEELAND, James
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON 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:	(Poly)ol block copolymers having a polycarbonate or polyether carbonate, polyester and polyether or ethercarbonate blocks of structureC-B-A′-Z′-Z-(Z′-A′-B-C)nwherein n=t−1 and wherein t=the number of terminal OH group residues on the block A; andwherein each A′ is independently a polycarbonate chain having at least 70% carbonate linkages, or a polyethercarbonate chain having at least 30% ether linkages, wherein each B is a (poly)ester block formed by epoxide and cyclic anhydride reaction/copolymerisation and/or cyclic ester ring-opening reaction % polymerisation, and each C is independently a (poly)ethercarbonate or (poly)ether block having 50-100% ether linkages; and wherein Z′-Z-(Z′)n is a starter residue. Block B may have one of the following structureswherein n2 is 1 or more and n3/n4 is 1 or more, which extends to higher polymers such as polyurethanes produced from copolymers, compositions and processes of production of such polyols.