2006-09-22 11:19:39 · 5 answers · asked by greju2001 1 in Education & Reference ➔ Other - Education
Polyolefins is the collective name for polyethylene (PE) and polypropylene (PP) - among the most widely used plastics today. They account for more than half of total plastics consumption in the developed world.
Polyolefins are extremely versatile. They posess a successful combination of properties, including
flexibility
strength
lightness
stability
impermeability, and
easy processability.
PE and PP are also well-suited to recycling and re-use.
Cracking
The production chain begins with oil and gas. "Cracking" refinery-derived petroleum products at high temperature produces ethylene and propylene, collectively called olefins. These gases are the building blocks for a large number of chemical products including polyolefin plastics.
Polymerisation
The next stage, polymerisation, converts ethylene and propylene molecules into long chains known as polymers. Thus, ethylene is polymerised into polyethylene and propylene into polypropylene. Modifying this process yields an extremely broad range of PE and PP products with differing properties.
2006-09-22 11:31:11 · answer #1 · answered by DKP 2 · 0⤊ 0⤋
Polyolefins is the collective name for polyethylene (PE) and polypropylene (PP) - among the most widely used plastics today. They account for more than half of total plastics consumption in the developed world.
Polyolefins are extremely versatile. They posess a successful combination of properties, including
* flexibility
* strength
* lightness
* stability
* impermeability, and
* easy processability.
PE and PP are also well-suited to recycling and re-use.
For more info go to http://www.borealisgroup.com/public/about/what/polyolefins.html
2006-09-22 18:24:40 · answer #2 · answered by klay 3 · 1⤊ 0⤋
Polyolefins are some kind of a plastics that are
extremely strong,light,flexible and is very easy to work with.
2006-09-22 18:30:42 · answer #3 · answered by massimo 6 · 0⤊ 0⤋
Polyoleofins are a type of plastics (polyethylene and polypropylene are the most common ones)
2006-09-22 18:25:09 · answer #4 · answered by tony b 2 · 1⤊ 0⤋
fibers, made out of polymeranalysis, petrochemicals.
2006-09-22 18:30:21 · answer #5 · answered by alfonso 5 · 0⤊ 0⤋