所述 组合物包含至少一种是包括由丙烯衍生的单元的聚合物的组分，和至少 一种是苯乙烯类嵌段共聚物的组分。
The compositions incorporate at least one component that is a polymer including propylene-derived units and at least one component that is a styrenic block copolymer.
热施工密封胶的主体材料主要是异丁烯类聚合物、三元乙丙橡胶和热塑性的苯乙烯嵌段共聚物。
Heat of the main construction material sealant mainly isobutene polymer, EPDM rubber and thermoplastic styrene block copolymer.
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