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Topic: Polypropylene


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In the News (Wed 22 May 19)

  
  Polypropylene
Polypropylene can be made from the monomer propylene by Ziegler-Natta polymerization and by metallocene catalysis polymerization.
Research is being conducted on using metallocene catalysis polymerization to synthesize polypropylene.
Elastomeric polypropylene, as this copolymer is called, is a kind of thermoplastic elastomer.
www.pslc.ws /macrog/pp.htm   (439 words)

  
  Allegheny Process Equipment - FAQ - Polypropylene
Polypropylene is an inexpensive, tough, plastic material that has excellent corrosion resistance.
For batch tanks we often use solid polypropylene cradles to support the load and to keep the load away from the tank walls and bottom.
Since polypropylene is weldable, thermoplastic equipment made from it is readily repaired or modified.
www.allegheny.com /process/faq.htm   (1044 words)

  
 polypropylene - HighBeam Encyclopedia
polypropylene, plastic noted for its light weight, being less dense than water; it is a polymer of propylene.
Surface characteristics of hydrosilylated polypropylenes: effect of co-catalyst and reaction temperature.
Effects of melt temperature and hold pressure on the tensile and fatigue properties of an injection molded talc-filled polypropylene.
www.encyclopedia.com /doc/1E1-polyprop.html   (451 words)

  
 plastics materials polypropylene PP
Polypropylene PP Polypropylene (PP) is a linear hydrocarbon polymer, expressed as CnH2n.
Polypropylene 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.
Additives are applied to all commercially produced polypropylene resins to protect the polymer during processing and to enhance end-use performance.
www.bpf.co.uk /bpfindustry/plastics_materials_polypropylene_PP.cfm   (947 words)

  
 Corrosion Polypropylene
Polypropylene is produced by the polymerization of propylene, a relatively inexpensive olefin derived from petroleum.
The use of polypropylene has expanded through the years due to its high strength to weight ratio, excellent resistance to corrosion, ease of fabrication, and low cost.
Although polypropylene belongs to the olefin family, it is quite different in properties to other polyolefins.
www.polymerplastics.com /corrosion_polyprop.shtml   (228 words)

  
 Polypropylene (PP) Properties and Technical Information - Dynalab Corp
Polypropylene (PP), a polymer prepared catalytically from propylene which differs from HDPE by having an isostatic replacement of a hydrogen atom by a methyl group on alternate carbon atoms in the main chain.
A major advantage is Polypropylene's higher temperature resistance, this makes PP particularly suitable for items such as trays, funnels, pails, bottles, carboys and instrument jars that have to be sterilized frequently for use in a clinical environment.
Polypropylene is a translucent material with excellent mechanical properties and it has gradually replaced the polyethylenes for many purposes.
www.dynalabcorp.com /technical_info_polypropylene.asp   (318 words)

  
 Polypropylene
Polypropylene is a versatile thermoplastic resin available in a wide range of formulations from general purpose homopolymer, random copolymer, and impact copolymer grades to highly specialized resins for engineering applications.
Grades of polypropylene are available to meet the needs of various fabrication processes such as extrusion, injection molding, thermoforming, blow molding, biaxially oriented film (BOPP), fiber spinning, slit tape, extrusion coating, and laminating.
The wide range of physical properties and relative ease of processing make polypropylene an extremely attractive material capable of competing with more expensive resins in a number of demanding applications.
www.huntsman.com /polymers/index.cfm?PageID=996   (107 words)

  
 Polypropylene fibers - polypropylene fibers in carpet & upholstery
Polypropylene fibers - polypropylene fibers in carpet and upholstery
Putting color and visual appeal into the pile of carpets or into upholstery fibers made of polypropylene (PP) is realized by pigments (colors) and effect additives that are added to the fiber or yarn during the melt-spinning process.
Our light stabilizers and antioxidants improve the quality of polypropylene carpet by protecting the fibers from degradation by UV light or heat, which helps retain the bright colors of the yarn and extends the lifetime of the carpets.
www.cibasc.com /ind-pla-tex-app-car-polypropylene   (326 words)

  
 Dr. F. Parodi - web paper #1 (fiber-reinforced polypropylene...)
Sizing compositions for glass fibers for polypropylene reinforcement were typically based for years on a hydrolyzed aminoalkyltrialkoxysilane as the coupling agent, and an aqueous, colloidal dispersion of the alkali metal salt (namely, the potassium salt) of a carboxylated, low-molecular-weight crystalline polypropylene.
These polypropylene dispersions are typically attainable by dissolving at about 160°C under pressure a maleic anhydride-grafted polypropylene (of average Mn = 3500-4000) in water, containing a stoichiometric amount of caustic potash, and an appropriate polyoxyethylene isooctylphenyl ether as the emulsifying agent.
Such bases were selected in order to leave crystalline, weakly acidic polypropylene films to coat the fiber surfaces after their drying at 130-160°C, in place of the corresponding potassium carboxylate ionomer given by the previous, conventional sizing compositions.
www.fpchem.com /fap_5a-en.html   (803 words)

  
 Polypropylene
Polypropylene, The Definitive User's Guide and Databook presents in a single volume a panoramic and up-to-the-minute user's guide for today's most important thermoplastic.
Polypropylene is the most popular thermoplastic in use today, and still one of the fastest growing.
Polypropylene, The Definitive User's Guide and Databook is the complete workbook and reference resource for all those who work with the material.
www.chemtec.org /books/pdl/pdl31.html   (211 words)

  
 Sterlitech Polypropylene Membrane Filters
Sterlitech polypropylene membrane filters are composed of pure polypropylene with absolute pore size ratings.
The polypropylene filter has extremely low extractable levels designed to provide accurate, consistent analysis results for sensitive ion chromatography applications while prolonging column life.
Sterlitech polypropylene filter is the preferred filter membrane for HPLC applications where the detection levels are below 230 nm.
www.sterlitech.com /products/membranes/polypropylene/polypropylene.htm   (137 words)

  
 Woven Polypropylene Bags
Woven polypropylene bags offer the best packaging for a large variety of products in industries such as agriculture, chemical, mining, building materials, pet food, and construction.
Our woven polypropylene bags are the finest available bags in the world, in particular our glossy graphics bags.
If you are interested in becoming a distributor, please contact us at info@usthaico.com.
www.polypropylene-bags.com   (183 words)

  
 Polypropylene Microplates-Thermo Scientific
Microtiter polypropylene deep well microplates’ special design is ideal for use with the KingFisher® 96 enabling efficient processing and mixing of magnetic particles, further enhancing the sample preparation and purification process.
Made from a virgin grade, biologically inert and highly chemically resistant material these polypropylene plates are perfect for sample collection, storage, combinatorial chemistry and library applications.
Polypropylene plates have a specially designed V-shape bottom and well volume of 0.5 ml with standard height plate or well volume of 2 ml with deep well plate.
www.thermo.com /com/cda/product/detail/1,,10122961,00.html   (169 words)

  
 Polypropylene Tanks
Polypropylene tanks are normally desired when the application involves temperatures up to 200 degrees farenheit on the stored material.
Polypropylene is resistant to a great many chemicals.
The downside of polypropylene tanks is that they are more brittle than polyethylene.
www.plasticstoragetanks.com /polypropylene_tanks.htm   (803 words)

  
 Corrosion proof stainless steel tanks or process polypropylene tank as plating tanks
100% polypropylene is a high-strength, monolithic material that will not corrode, become brittle, or de-laminate, even when exposed to the most aggressive chemicals, over very long periods of time.
Polypropylene is very resilient, and is well-suited to manufacturing and process environments where impact can occur from parts handling devices, fork trucks and hoists and other material handling.
Polypropylene is easy to fabricate, economical, and has a long track record of success for the manufacture of tanks, tank hoods, ducting and workstations, for industrial and laboratory environments.
www.tri-mer.com /polypropylene_tanks.html   (479 words)

  
 Polypropylene Handbook, 2nd Ed.
The focus of interest in polypropylene has shifted over a half century from the first catalysts to the growing applications, then accelerating interest in the manufacturing process, leading to new rounds of catalysts, processes, polymers, and applications.
The second edition of Polypropylene Handbook presents, in one volume, the current state of the PP industry.
From the Preface: “...This book is an attempt to present the new state of the PP industry, to record and explain those fast-moving technological and business events that have resulted from that recent revolution, all in the light of five decades of PP experience...”
www.polysurfacesbookstore.com /pages/3190.html   (189 words)

  
 Highbeam Encyclopedia - Search Results for polypropylene
polypropylene The Oxford Pocket Dictionary of Current English...
a length of strong cord made by twisting together strands of natural fibers such as hemp or artificial fibers such as polypropylene.
For example, propene (propylene) is the monomer from which polypropene (polypropylene) is made.
www.encyclopedia.com /SearchResults.aspx?Q=polypropylene   (778 words)

  
 Polypropylene, materials from Sunrise Industries, America's source for limited wear protective apparel and industrial ...   (Site not responding. Last check: 2007-10-03)
Polypropylene, materials from Sunrise Industries, America's source for limited wear protective apparel and industrial clothing
Spunbonded polypropylene is a lightweight, breathable fabric that provides economical protection against non-hazardous, grimy-work environment applications.
Spunbonded polypropylene is appropriate for wear in the non-toxic workplace and is a low-cost solution for protecting workers in dirty environments.
www.sunriseind.com /materials/polypropylene.asp   (52 words)

  
 PP78 Polypropylene Geomembrane Page
The high performance of the Cooley polypropylene liners is a combination of a high strength polyester scrim, tough polypropylene polymer and a unique and proprietary manufacturing process.
Cooley polypropylene is available in five standard thicknesses from 20 mils (0.508 mm) to 60 mils (1.50 mm).
Cooley polypropylene provides the end-user with a liner product that can be supplied in panels up to half acre in size to expedite installation and minimize the amount of field seaming.
www.geomembrane.com /PP/PP78.htm   (445 words)

  
 Woven Polypropylene Bags - ABC Packaging
Woven polypropylene bags can be made with a hemmed top and a single fold stitched bottom, along with various features such as UV protection, double sewn seams, and in coated and uncoated versions.
Our woven polypropylene bags are used to package feed and grain, fertilizer, sugar, beans, chemicals, and even coal.
One of the main uses of woven polypropylene bags is for flood control and levee construction because of the tight flat weave of the material, but many industrial firms are realizing the incredible strength and durability for shipping pallet loads of product as well.
www.abc-packaging.com /products/woven-polypropylene-bags.htm   (413 words)

  
 Polypropylene
Polypropylene is an economical material that offers a combination of outstanding physical, chemical, mechanical, thermal and electrical properties not found in any other thermoplastic.
Polypropylene provides excellent resistance to organic solvents, degreasing agents and electrolytic attack.
It has a lower impact strength, but its working temperatures and tensile strength are superior to low or high density polyethylene.
www.lehighvalleyplastics.com /polyprop.htm   (156 words)

  
 cartridge filter polypropylene information.
Ll polypropylene cage holds 15 Hytrex cartridges; 30 filter seals reduced to one; available in 8 different micron ratings; integral eyehook for handling by..
He high efficiency of the all-polypropylene filter makes it an ideal membrane prefilter or cost-effective alternative to membrane cartridges in a wide..
The filter bags can be of nylon, polypropylene, polyester or of nylon monofilament mesh, with a wide range..
www.lawnet.com.au /c/cartridge_filter_polypropylene.html   (193 words)

  
 Custom Plastic Fabrication; Polypropylene Fabrications
A polypropylene fabrication is well-suited to most chemicals and conditions.
Is a polypropylene fabrication suitable for a clinical environment?
A polypropylene fabrication is resilient, not brittle, with a high tensile strength.
www.tri-mer.com /q&a/custom-fabrications.htm   (278 words)

  
 ADDITIONAL PROTECTIVE PAGE INFO - BCW Supplies
Protective pages come in 2 different materials which are distinctly different (Polypropylene & Vinyl).
Polypropylene is the most popular choice by collectors because of the archival properties of the material.
Note: Polypropylene is considered an archival safe material by the Library of Congress.
www.bcwsupplies.com /page-PPAGE.htm   (100 words)

  
 Handbook of Polypropylene and Polypropylene Composites, 2nd Ed.
Handbook of Polypropylene and Polypropylene Composites, 2nd Ed.
It introduces the possibilities of new catalyst systems for producing more durable thermoplastics, while detailing the use of additives that promote impact resistance, controlled rheology, thermal stability, and other desirable characteristics of the polymer matrix.
I have identified interphsae design as the foundation on which additives are the individual building blocks needed to develop a suitable material.
www.polysurfacesbookstore.com /pages/3395.html   (286 words)

  
 Polypropylene (PP)
Additives are used in Polypropylene to prevent polymer degradation, resulting from exposure to heat, shear and light.
With Polypropylene applications, the requirements for organic pigments broaden and demand excellent processing properties like heat resistance or dispersibility and durable end-use properties like heat and weather fastness.
Ultraviolet light, the same type that causes skin to sunburn, can initiate chemical reactions polypropylene, resulting in polymer chain scission and loss of chemical and physical properties.
www.cibasc.com /index/ind-index/ind-pla/ind-pla-polymersandpolymerprocessing/ind-pla-pol-polypropylene.htm   (377 words)

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