The London Metal Exchange (LME) provides a total of eight futures for the plastics polypropylene (PP), polyethylene (PE-LLD). One global and three regional contracts for Europe, Asia and North America.
Here plasticker publishes the respective daily closing prices for the previous day.
The data are provided by vwd Vereinigte Wirtschaftsdienste AG.

For basic explanations on the LME and futures trading as well as additional information on materials specifications, details of price formation etc. please refer to the FAQ of the LME.

Here you will find a commentary on the LME prices quoted on 2010-09-01 here: MFGlobal Daily Commentary

The LME regularly runs introductory seminars on the futures trade in plastics:

  "Introduction to the LME"
  "Introduction to Hedging with Futures"

The prices of PP and PE-LLD quoted on the LME on 2010-09-01
(change compared to the previous day in brackets)

Quote prices in:  US$/to    EUR/to¹

1. Polypropylen (PP)²

US$/to	Europe	Asia	North- America	Global
Cash & Settlement	1.290 (0)	1.240 (0)	1.480 (0)	1.240 (0)
September	1.240 (0)	1.290 (+50)	1.485 (+245)	1.240 (0)
Oktober	1.290 (0)	1.240 (0)	1.475 (0)	1.240 (0)

2. Polyethylen (PE-LLD)²

US$/to	Europe	Asia	North- America	Global
Cash & Settlement	1.400 (0)	1.350 (0)	1.130 (0)	1.130 (0)
September	1.130 (0)
Oktober	1.400 (0)	1.360 (0)	1.100 (0)	1.100 (0)