Marta P Potiforova

Title: Marta P. Potiforova and a Process for Producing Shock-Proof Styrene Graft Copolymers.

Introduction

Marta P. Potiforova is an inventor associated with Saint Petersburg, Russia. Her patent work concerns a process for producing shock-proof graft copolymers of styrene with synthetic rubber.

Latest Patents

Potiforova is credited with 1 patent, titled “Process for Producing Shock-Proof Graft Copolymers of Styrene with Synthetic Rubber.” The process dissolves rubber in styrene at a temperature no higher than 75°C, then prepolymerizes the solution at 75–85°C with a plasticizer and a peroxide initiating agent. Prepolymerization continues until styrene conversion reaches 25–40 percent.

The resulting prepolymer undergoes aqueous-suspension polymerization at temperatures up to 140°C. The process specifies a prepolymer-to-water volume ratio between 5:3 and 10:3, along with peroxide polymerization initiators and a stabilizing system containing tricalcium phosphate, sodium alkylsulphates, and calcium carbonate. The patent describes a simple process flow that does not require a molecular-weight modifier and reports that the resulting copolymers have strong physical and mechanical properties.

Career Highlights

The available information identifies Potiforova’s patent contribution in polymer production. It does not specify an employer, so no company affiliation is included.

Collaborations

Her named coworkers include Ekaterina I. Egorova and Valentina G. Karmakova. The available information does not detail their specific roles in the patented process.

Conclusion

Marta P. Potiforova’s documented invention presents a staged method for producing shock-proof styrene graft copolymers, combining controlled prepolymerization with aqueous-suspension polymerization.