Cayenne GTS (9PA) V8-4.8L (2008)
Polyester
See: Polyester resins, e.g. alkyd resins.
Polyester fibers
Acid-resistant and alkali-resistant fibers; condensation product of terephthalic acid and ethylene glycol (examples: Dacron, Dioley, Terylene, Trevira).
Polyester resins
Unsaturated polyester resins, abbreviation: UP. Plastics with ester bond (polyester) of polyvalent alcohols with aliphatic or aromatic dicarboxylic acids
that contain double bonds that cross-link the macromolecules (See: Plastics, duroplasts). Important basic substance in the paints industry as a so-called
alkyd resin or artificial resin bonding agent for air-drying (oxidative) or oven-drying paint systems and for glass fiber reinforced plastics.
Polyethylene
Abbreviation: PE. Most important polymer plastic for packaging. Polyethylene can be burned without harming the environment (results in water and
CO2).
Polymerization
A chemical procedure used in plastics technology in which many small molecules of one or more simple substances (monomers) combine to form large
molecules (macromolecules). The new combined molecule has other properties than its members. In this way, for example, a gaseous substance can be
transformed into a solid material.
Polymers
Synthetic products that result from Polymerization.
Polyphosphates
Collective term used to describe the salts of polyphosphoric acid. Sodium salts and esters are used as water softeners and washing powder additives.
Polypropylene
Abbreviation: PP. Polymer plastic for fibers, plastic bottles and plastic coatings.
Polystyrene
Abbreviation: PS. Polymerization product (See: Polymerization) made of styrene. It is one of the most important types of plastic and is characterized by
a high level of transparency and brilliant colors. The electrical properties are also remarkable. Polystyrene is resistant to chemicals. It is primarily
processed using the injection molding procedure. Most important usages: as packaging, consumer goods, device parts and in foam form as insulation for
example.
Polyvinyl chloride
Abbreviation: PVC. Polymerization product made of vinyl chloride; glass clear, resistant to acid and lye, thermoplastic and colorable. Hydrogen chloride
is split off in thermal decomposition.
ppb
Abbreviation for "parts per billion". 1 ppb = 1 billionth of the volume or weight = 1 microgram per kilogram ((mu)g/kg).
PP
See: Polypropylene.
ppm
Abbreviation for "parts per million". 1 ppm = 1 millionth of the volume or weight = 1 milligram per kilogram (mg/kg) or 1 gram per ton.
PPP
See: Polluter pays principle.