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Home Chemistry Catalyst for Preparing Vinylidene Chloride

Catalyst for Preparing Vinylidene Chloride


Vinylidene chloride is a valuable monomer for preparation of polymers, which have an extremely high barrier resistance to the transmission of oxygen and water vapors. Copolymers produced from vinylidene chloride show excellent resistance to solvents and corrosive chemicals and have a high degree of abrasion resistance, toughness and dimensional stability.

Vinylidene chloride is commonly produced by dehydrochlorination 1,1,2-trichloroethane using inorganic bases such as calcium hydroxide or sodium hydroxide, but this reaction produce large quantities of the corresponding salts (CaCl2 or NaCl) and the waste water.

Much more economically and ecologically attractive is a catalytic preparing vinylidene chloride. However the modern catalytic processes suffer from deactivation of the catalysts due to the formation of coke on their surface and chlorination of the carriers, such as SiO2 and Al2O3. We propose a novel selective catalyst for preparing of vinylidene chloride.

Innovative Aspect and Main Advantages

Reaction with catalyst DHC proceeds with selectivity of 85 % and conversion of 75 %.

Proposed catalyst DHC for preparing vinylidene chloride exceeds of a best world patent analogs by prolonged work (250 h and more) without loss of activity and selectivity in the absence of promoters and inductors. Catalyst DHC was developed jointly by the Institute of Organic Chemistry NASU (Kiev) and PPG Industries Inc. (USA).

Areas of Application

Chlorine and Polymer Industries, Medicine and Agrocheistry.

Stage of Development

This is intellectual property which is defended by Pat. Ukraine N77876 (2007) and Intern. Appl. WO 2006/132625.

Contact Details

Institute of Organic Chemistry National Academy of Sciences of Ukraine
Contact person: Yuriy Serguchev
Address: 5, Murmanskaya str., 02660, Kiev-94, Ukraine
Tel.: (+38 044) 559 0436
Fax: (+38 044) 573 2643
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Contact person: Peter KAMARCHIK
PPG Industries Inc. Center
4325, Rosanna Drive, Alison Park, Pennsylvania, 15101, USA

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