HIPS
High Impact Polystyrene
Proprietary
process technology
Polimeri Europa
Polimeri Europa – the petrochemical
company of Eni – manages the production and marketing of Basic Chemicals,
Polyethylene, Elastomers and Styrenics. With its 17 production sites throughout Europe and a widespread sales network,Polimeri Europa can present itself
to the intermediates, thermoplastic resins and elastomers market as a sound and
comprehensive supplier whose key strength is its integration. From raw materials to
production plants, from research laboratories to technology, through to the interface with the market which can turn to a single source with the certainty of finding solutions to its requirements not only in terms of products,but also in terms of assistance and service. Thanks to the definition of the e-commerce and the logistic portal express, Polimeri Europa can offer to its customers the opportunity to use their tailored made e-shopping and logistics.
Saving time and money.
On the basis of its first hand experience,Polimeri Europa can also license its proprietary production technologies aiming to satisfy the even more specific customers needs. Polimeri Europa’s commitment to quality,improvement and innovation continues, as does its pledge to promote sustainable growth with regard to the community and the environment.
POLIMERI EUROPA PRODUCTION TECHNOLOGIES
FOR LICENSING
Licensing
Proprietary process technologies
Phenol and derivatives
PBE-1 Zeolite catalyst based Cumene *Phenol, Acetone, Alphamethylstyrene *Isopropyl Alcohol Acetone hydrogenation *Isopropyl Alcohol to Cumene *PBE-1 Zeolite catalyst
TS-1 Titanium silicalite catalyst based Ammoximation DMC and derivatives Dimethylcarbonate
via Carbon Monoxide and Methanol *Dimethylcarbonate / Diphenylcarbonate *Polyethylene LDPE HDPE EVA
Styrenics
PBE-1 and PBE-2 Zeolite catalyst based Ethylbenzene Styrene monomer GPPS HIPS EPS
ABS continuous mass polymerization SAN
Elastomers e-SBR s-SBR
SBS / SB / LCBR Polybutadiene
Proprietary catalyst technologies
Titanium silicalite PBE-1 Zeolite PBE-2 Zeolite
* Co-licensing in cooperation with Lummus Technology
Introduction to Polimeri Europa High Impact Polystyrene process
At the end of the 1970s, Polimeri Europa (at that time Montedison and then EniChem) started the production of high impact polystyrene (HIPS), via a continuous mass process, in two plants located in Italy and Belgium. During the following decade, the Italian plant was modified by the introduction of new equipment, designed by its R&D
at the Mantova Research Centre.
Within a few years, two new units, acknowledging the improved proprietary technology developed meanwhile by Polimeri Europa R&D, were started up
in Italy.
The main features of Polimeri Europa
HIPS process technology are as follows:•proprietary, accurate process and mechanical design of key equipment (reactor, devolatilizer);
•simple process scheme and easy process control;
•flexible technology allowing tailor-made solutions for specific needs, in terms of plant capacity and products portfolio range;•minimum quantity of different external materials introduced in the process.Even though HIPS production technology can be considered to be well established, especially in the last decades the market requirements in terms of quality and environmental impact of HIPS pushed Polimeri Europa R&D to continuously update its technology and product portfolio, by improving its key proprietary equipment and optimizing the process cycle.
The results of this effort make Edistir®HIPS, with its wide products portfolio, a benchmark within the European scenario.
NOW AVAILABLE
Material balance and process economics  for typical HIPS unit
Raw materials Electricity
Fuel gas (104kcal)Steam
TECHNICAL DATA
Process performance and economics
For all the reasons mentioned earlier, the Polimeri Europa HIPS technology minimizes the effects of raw materials and chemical impurities on the process and product structural parameters.
Assuming 99.9% styrene purity, the typical raw materials and utilities consumption per metric ton of polymer is reported in table above.
The versatility of Polimeri Europa HIPS
technology makes easily possible to provide convenient solution in a broad range of capacities, from 50 to 200 kt/y.
The plant arrangement can be tuned to fit required targets, such as special grades and/or peculiar product range.
1,005-1,008 kg
120 kWh
15-20 kg
0-30 kg The Edistir®HIPS product portfolio Polimeri Europa HIPS products are characterized by a unique balance between key properties:
•very low residual monomer and oligomer content;
•very high rubber phase efficiency (reduced rubber consumption);•minimized rubber cross-linking and polymer degradation.
The flexibility of Polimeri Europa HIPS technology allows to manufacture all
main HIPS grades, suitable for the most challenging fields of application. Refrigeration Industry •environmental stress cracking resistant (ESCR) grades for highly chemical-resistant inner liners;
•very high gloss grades to enhance the aesthetic properties of the internal cabinet;•medium-impact grades combining high flowability and stiffness for injection-molded internal parts.
Telectronic
•a wide range of grades having a very good balance among toughness, stiffness, gloss, and flowability for injection molding of technical parts, housings, and covers;•high impact grades with good flowability and high stiffness;
•high impact grades, with good stiffness and high thermal resistance.
Packaging
•high-performance grades for extrusion and thermoforming of disposable tumblers, flatware, cups, lids, and containers for diary products and frozen food.
Other Applications
•high-flowability grades for very fast
injection molding of toys and housewares.
Industrial applications
Polimeri Europa HIPS units, based
on proprietary technology, are on-stream in Italy (1981, 75 kt/y; 1992, 40 kt/y),reaction mass
in Hungary (1991, 75 kt/y), and in Belgium (1979, 80 kt/y), making Polimeri Europa one of the major European producers
of high impact polystyrene.
One HIPS unit (80 kt/y) licensed by Polimeri Europa is on-stream in Hong Kong since the early 1990s. A second one
(70 kt/y) was started up in Brazil in 2000.

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