STYRENE-BUTADIENE BLOCK COPOLYMERS FOR FILM APPLICATIONS

PROBLEM TO BE SOLVED: To provide monovinylarene-conjugated diene copolymers useful in shrink film applications, especially in blends with polystyrene.SOLUTION: A monovinylarene-conjugated diene block copolymer comprises the following: a proximal conjugated diene block comprising from about 5 phm con...

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Bibliographische Detailangaben
Hauptverfasser:	STOUFFER CARLETON E, BROWN JOHN M, SMITH MICHAEL A, STACY NATHAN E, WILKEY JOHN D
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide monovinylarene-conjugated diene copolymers useful in shrink film applications, especially in blends with polystyrene.SOLUTION: A monovinylarene-conjugated diene block copolymer comprises the following: a proximal conjugated diene block comprising from about 5 phm conjugated diene units to about 50 phm conjugated diene units; and a plurality of monovinylarene-conjugated diene mixed blocks, wherein each monovinylarene-conjugated diene mixed block contains conjugated diene units and monovinylarene units with a weight ratio of conjugated diene units to monovinylarene units of about 0.05 to about 0.33.