Larisa F Maladzyanova

Title: Larisa F. Maladzyanova and a Process for Producing Shock-Resistant Styrene Graft Copolymers.

Introduction

Larisa F. Maladzyanova is an inventor associated with Saint Petersburg, Russia. Her listed patent concerns a process for producing shock-resistant graft copolymers of styrene with synthetic rubber.

Latest Patents

Maladzyanova 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 mixture at 75–85°C with a plasticizer and a peroxide initiator. Prepolymerization continues until 25–40 percent of the styrene has converted.

The resulting prepolymer undergoes aqueous-suspension polymerization at temperatures up to 140°C. The method specifies a prepolymer-to-water volume ratio between 5:3 and 10:3, along with peroxide 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 Maladzyanova’s work through this patent and its contribution to styrene graft-copolymer production. No additional career details or employer are provided.

Collaborations

Valentina G. Karmakova and Galina Ballova are listed as Maladzyanova’s coworkers. The supplied information does not specify their roles in the patent or the process.

Conclusion

Larisa F. Maladzyanova’s listed invention presents a defined method for producing shock-resistant styrene graft copolymers, emphasizing a straightforward process and strong material properties.