Pentaplast

Pentaplast

 

the trade name in the USSR for the polyether poly-3,3-bis(chloromethyl)oxetane, whose repeating unit is [—OCH2C(CH2Cl)2CH2—]n. Pentaplast is a thermoplastic linear polymer with a 30-percent degree of crystallization and a molecular weight that ranges from 70,000 to 200,000. A hard, colorless substance, it is self-extinguishing and dissolves only in cyclohexanone and chlorobenzene at elevated temperatures. It resists the action of concentrated mineral acids at 100°C and is destroyed only by the action of strong oxidizing agents, for example, nitric acid and fuming sulfuric acid. Pentaplast is more stable than polyvinyl chloride and less so than fluoroplastics. Its strength indexes are similar to those of polypropylene.

Pentaplast is commercially prepared by the cationic or anionic polymerization of 3,3-bis(chloromethyl)oxetane in blocks or suspensions in organic solvents. It is suitable for injection molding and extrusion and has good adhesive properties. Pentaplast is used as an anticorrosive coating for chemical equipment and pipes, as cable insulation, and to make high-precision parts in mechanical engineering. In the United States, it is manufactured under the trade name Penton.

REFERENCE

Entsiklopediia polimerov, vol. 2. Moscow, 1974.
References in periodicals archive ?
Other processors that have developed floatable solutions meeting APR's guidelines include Klockner Pentaplast, Gordonsville, Va.
Most recently, Widden has served as the chief commercial officer for Klockner Pentaplast as well as vice president/general manager of Avery Dennison.
Widden served as the chief commercial officer for Klockner Pentaplast and vice
5 July 2017 - Germany based packaging materials manufacturer KlA[pilcrow sign]ckner Pentaplast Group has closed the acquisition of UK-based food container manufacturer Linpac Senior Holdings Ltd.
The Klockner Pentaplast Group ('kp'), has announced it has successfully completed its deal to acquire LINPAC Senior Holdings Limited and its direct and indirect subsidiaries.
The Klockner Pentaplast Group (KP), a leader in rigid plastic film and packaging solutions, has announced it is to acquire the LINPAC Group and subsidiaries for an undisclosed sum.
Its principal Klckner Pentaplast is a global leader in packaging solutions for the food, beverage, pharmaceutical, medical device and card markets, among others.
The Klockner Pentaplast Group recently announced the launch of new production capacity in Europe and South America.
The European Commission approved, on 14 January, the takeover by Strategic Value Partners LLC (SVP) of Kloeckner Holdings GP SA (KH, Luxembourg), the parent company of Germany's Klockner Pentaplast Group.