Arkema의 특허인 Luperstop® GH1096 및 TermNator® P PVC shortstoppers 는 PVC 현탁 중합에서 수지의 색상과 품질을 향상시키기 위해 설계되었습니다. 또한 두 제품은 비상시 고농도에서 반응 킬러로 사용 될 수 있습니다.
Arkema's patented Luperstop® GH1096 hydroxy-tempo PVC shortstopper is designed for suspension PVC applications and is more active than conventional stoppers for quenching damaging radicals during polymerization. Arkema's studies have revealed a shortstopper to residual peroxide molar ratio < 1 when used with peroxydicarbonates. Clearly GH1096 provides outstanding stopping performance. This novel chemistry is water soluble and does not require solvent dilution. PVC resins protected by Luperstop® shortstoppers exhibit improved whiteness. Luperstop® GH1096 is approved for food contact PVC resin applications in Europe.
Arkema's application patented TermNator® P diethyl hydroxylamine shortstopper offers a safer and less toxic solution for polymerization control than other products in the market today. Processes involving both peroxyester and peroxydicarbonates to produce PVC function well with TermNator® P from 50ppm-150ppm. In this concentration, TermNator® P can improve whiteness of finished resins. At much higher concentrations, TermNator® P is an outstanding reaction killer, even in circumstances where continuous reactor stirring or agitation has failed. At 5000-6000 ppm, a runaway PVC reaction can be stopped in 30 seconds. As a shortstopper, the concentrations needed are similar for TermNator® P and Luperstop®. TermNator® P has the added benefit of unique reaction killing performance.