THERMOSETTING COMPOSITION CONTAINING STYRENE-BUTADIENE-STYRENE BLOCK POLYMER, AND METHOD FOR CURING SAME

When a thermosetting composition containing a styrene-butadiene-styrene block copolymer is cured under a conventionally known curing condition, the curing reaction does not proceed sufficiently in some cases. Thus, required is a curing method that may efficiently cure the thermosetting composition w...

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Bibliographische Detailangaben
Hauptverfasser: OSUMI, Shota, TANDO, Izumi
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:When a thermosetting composition containing a styrene-butadiene-styrene block copolymer is cured under a conventionally known curing condition, the curing reaction does not proceed sufficiently in some cases. Thus, required is a curing method that may efficiently cure the thermosetting composition within a certain time.A method for producing a cured product of the present invention includes:(I) heating a thermosetting composition containing a styrene-butadiene-styrene block copolymer (SBS) (A) and a thermal radical generator (B) within a temperature range of 120°C to 180°C until 30% or more of double bonds derived from 1,2-bond structure in a butadiene block react; and(II) then heating the thermosetting composition within a temperature range of 181°C to 300°C until 50% or more of the double bonds derived from 1,2-bond structure in a butadiene block react.