Polypropylene resins production

Patent Number EP 1075933 A2 20010214 MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN, PRODUCTION PROCESS THEREOF, AND CONTAINER, SHOCK-ABSORBING MATERIAL FOR AUTOMOBILE AND AUTOMOTIVE MEMBER FORMED OF THE MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN Kogure N Gokuraku H JSPCorp. 

The process has been demonstrated on a pilot scale by Lurgi and Statoil. Sufficient propylene has been produced to make polypropylene resin product by Borealis. This process appears to use an oxide doped ZSM-5 zeolite catalyst in fixed bed reactors. The oxide doping promotes the methanol conversion to olefins. All olefins, other than propylene, are recycled to extinction or purged as fuel gas or produced as naphtha. The flow sheet is illustrated in the Figure 11.8. 

ActivCat Not a process but a range of additives for single-site catalysts for making polyolefins that double the capacity of the catalysts. ActivCats can be used for both polyethylene and polypropylene resin production and standard MAO-/silica-type catalysts production. ActivCats do no alter the properties of MAO/sUica catalysts during production. Introduced and trademarked by Albemarle in 2008. 

Tzoganakis, C., Vlachopoulos, J., and Hamielec, A.E., Production of Controlled-Rheol-ogy Polypropylene Resins hy Peroxide Promoted Degradation During Extrusion, Polym. Eng. Set, 28, 170 (1988)... 

Patent Number US 6077878 A1 20000620 FOAM MADE FROM MODIFIED POLYPROPYLENE RESIN AND PROCESS FOR THE PRODUCTION THEREOF... 

Industry estimates indicate that up to 5% of the total resin production finds its way into prototype or mill shape plastic products. By mill shapes is meant those primary uniform configuration subject to established cross-sectional and length tolerances. While this estimate is necessarily conjectural, the best available information indicates that this range is accurate. Modem Plastics magazine estimated mill shape production for 1968 in acrylics, cellulose, nylon, acetal, polycarbonate, high density polyethylene, polypropylene, poly(vinyl chloride), and copolymers to approach 336.4 million pounds. Total United States resin production for 1968 slightly exceeded 16 billion pounds. 

C. Tzoganakis, J. Vlachopoulos, and A. E. Hamielec, Production of Controlled-rheology Polypropylene Resins by Peroxide Promoted Degradation during Extrusion, Polym. Eng. Sci., 28, 170-180 (1988). 

To make impact copolymers, the polypropylene resin formed in the first reactor (1) is transferred into the second reactor (5). Gaseous propylene and ethylene, with no additional catalyst, are fed into the second reactor to produce the polymeric rubber phase within the existing polypropylene particles. The second reactor operates in the same manner as the initial reactor, but at approximately half the pressure, with a centrifugal compressor (6) circulating gas through a heat exchanger (7) and back to the fluid-bed reactor. Polypropylene product is removed by product discharge tanks (8) and unreacted gas is returned to the reactor. 

PP known as polypropene, is one of those most versatile polymers available with applications, both as a plastic and as a fibre, in virtually all of the plastics end-use markets. Professor Giulio Natta produced the first polypropylene resin in Spain in 1954. Natta utilised catalysts developed for the polyethylene industry and applied the technology to propylene gas. Commercial production began in 1957 and polypropylene usage has displayed strong growth from this date. PP is a linear hydrocarbon polymer, expressed as... 

Inspire, Polypropylene resins, Dow Plastics Insta-Pro Foam System, One-component polyurethane foam, Insta-Foam Products Inc. Insta-Seal, One-component polyurethane foam, Insta-Foam Products Inc. 

Plastics in MSW The Americas, in the United States, plastic resin sales and captive use reached 46.2 million tons in 2001, a 4% decrease from 2000, according to the American Plastics Council (1). Resin production rose to 45.9 milUon tons in 2001, up 4.8% from the previous year. The U.S. plastics industry continues to expand into new markets as plastic products come to replace ones made of wood and metal (Fig. 1). In the United States, some 232 million tons of MSW were generated in 2000, an increase of 0.9 million tons over 1999 (Fig. 2). Of this stream, plastics constitute about 10.7 wt%. Plastic containers and packaging dominate, followed by materials in goods such as automobiles, appliances, electronics, furniture, and carpeting. Plastic resins used in containers and packaging include poly(ethylene terephthalate) (PET in soft drink bottles with polypropylene [PP] caps), high density polyethylene (HDPE in milk and water bottles), poly(vinyl... 

Syndiotactic polypropylene resins allow the production of small flexible containers with very good y-radiation resistance and a degree of transparency never achieved before with any polypropylene. Moreover, the final objects transmit a feeling by contact that has been qualified as soft and warm. Only some highly expensive specialty and engineered polymers can achieve the same combination of properties, but require a significantly longer cycle time. 

BurnEx 2000 polypropylene flame retardant concentrates are made from nano-dispersible antimony pentoxide and an organic bromine compound. Polypropylene resins of different Melt Flow Index (MFI) are used for different applications. Nyacol Nano Technologies, Inc. can design other concentrates or work with your compounder to formulate a custom product for you. They have a fully equipped compounding laboratory at their Ashland, MA facility. 

This plastics plant produces a number of resins, including high-density polyethylenes, which are used in the stiff material for Ariel bleach bottles and, indeed, coatings for industrial pipelines. Another product manufactured by LyondellBasell is the polypropylene resin Clyrell EC340R, marketed as ideal for high-impact, low temperature-resistant food containers. It is materials such as this that are ideal for moulding into Carte D Or ice cream boxes. 

PPL piping products lined with polypropylene resin. 

Atactic polypropylene (APP) is tacky as produced and is not easily formulated. It is used essentially as a neat resin or extended with a small amount of wax or a polymer to add hot tack. Atactic polypropylene used to be a byproduct in the production of crystalline polypropylene, but with the development of new, more efficient catalysts, less atactic polypropylene is produced. As a result, at least two companies are now producing APP directly. This means that a greater number of precise products are available however, pricewise they will have to bear the full cost of production. It is therefore anticipated that atactic polypropylene resins will be developed mainly for specific applications having higher value-added performance. 

Fiber crystallinity data for fibers spun from two polypropylene resins was obtained, on a commercial fiber line, using on-line Raman spectroscopy. The experimental data presented here will be used to validate fundamental fiber spinning models. Results from the model validation/refinement will be are presented in a separate paper. The validated models and experimental observations can be used to guide fiber spinning of hPP polymers for rapid product development. Some key results obtained from the online Raman measurements can be summarized as follows... 

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