This document establishes a system of designation for polyketone
(PK) moulding and extrusion materials which may be used as the
basis for specifications. Polyketone polymer chains are built up
from regularly alternating olefinic units and keto groups. The
olefinic units shall be randomly distributed ethylene and
propylene.
The types of polyketone plastics are differentiated from each
other by a classification system based on appropriate levels of the
designatory properties, melting temperature, melt mass-flow rate,
temperature of deflection under load and on information about the
intended application and/or method of processing, important
properties, additives, colour, fillers and reinforcing
materials.
The designation system is applicable to all polyketone
terpolymers and blends. It applies to materials ready for normal
use in the form of powder, granules or pellets, unmodified or
modified by colourants, fillers or other additives.
It is not intended to imply that materials having the same
designation give necessarily the same performance. This document
does not provide engineering data, performance data or data on
processing conditions which may be required to specify a material.
If such additional properties are required, they are intended to be
determined in accordance with the test methods specified in ISO� 21970-2, if
suitable.
In order to designate a polyketone to meet particular
specifications, the requirements are to be given in data block 5
(see 4.1).