The present invention relates to a process for the production of copolymers comprising: (i) forming a reaction mixture comprising an elastomer and a vinyl aromatic compound; (ii) introducing the reaction mixture to a reaction vessel; and (iii) performing a polymerisation reaction wherein steps (i)-(iii) are performed in that order to obtain a copolymer comprising: (a) a phase comprising a reaction product of the elastomer with the vinyl aromatic compound; and (b) a phase comprising a reaction product of the vinyl aromatic compound wherein a sample of the reactor contents is obtained during step (iii) to determine of the formed copolymer: the content of phase (b); and/or ● the molecular weight of phase (b) wherein the determination of the content of phase (b) in the formed copolymer and the molecular weight of phase (b) is performed by a method comprising isolation of phase (b) from the sample of the formed copolymer and subjecting the obtained phase (b) to molecular analysis. Such process allows for the determination of the content of the phase (b) and of the molecular weight thereof in a quick and efficient manner, allowing for adjustment of process parameters such that the production of products that not correspond to the desired product quality is minimised.
本发明涉及一种生产共聚物的工艺,包括:(i) 形成由弹性体和
乙烯基芳香族化合物组成的反应混合物;(ii) 将反应混合物引入反应容器;以及(iii) 进行聚合反应,其中步骤(i)-(iii)依次进行,以获得共聚物,共聚物包括:(a) 由弹性体与
乙烯基芳香族化合物的反应产物组成的相;以及(b) 由
乙烯基芳香族化合物的反应产物组成的相:(a) 一相包括弹性体与
乙烯基芳香族化合物的反应产物;和 (b) 一相包括
乙烯基芳香族化合物的反应产物:相(b)的含量;和/或 ● 相(b)的分子量,其中确定所形成的共聚物中相(b)的含量和相(b)的分子量的方法包括从所形成的共聚物样品中分离相(b),并对所获得的相(b)进行分子分析。通过这种方法可以快速有效地确定相(b)的含量及其分子量,从而可以调整工艺参数,最大限度地减少不符合所需产品质量的产品的生产。