BS 3412:1992

Committees responsible
Foreword
Methods of specifying
Section 1. General
1.1 Scope
1.2 Definition
1.3 Preparation of test specimens
1.4 Conditioning of test specimens
1.5 Reporting of test data
Section 2. Ethylene homopolymer and copolymer materials
having a maximum content of 1-olefin monomers of less
than 50% (m/m) and non-olefinic monomers with functional
groups up to a maximum of 3% (m/m)
2.1 Designation
2.2 Properties
2.3 Carbon black content
2.4 Dispersion of carbon black and pigment
2.5 Antioxidants
Section 3. Polyethylene materials for British Government
Service contracts
3.1 Classification
3.2 Properties
3.3 Antioxidants
3.4 Marking
Appendices
A. Preparation of test specimens
B. Method of determining conventional density
Tables
1. Codes for the intended application and method of
     processing
2. Codes for additives and other supplementary
     information
3. Designatory properties: codes for conventional
     density
4. Designatory properties: codes for melt flow rate
     (MFR)
5. Melt flow rate tolerances
6. Additional properties
7. Antioxidants for use with polyethylene compositions
Figure
1. Example of a complete designation

This revision changes the specification to a method of specifying to incorporate the basic designation system used in ISO 1872-1 and aligns the test methods within those used in ISO 1872-2.

This British Standard gives a method for specifying the composition and property requirements of ethylene homopolymers and ethylene copolymers having a maximum content of other 1-olefin monomers of less than 50 % (m/m). In addition, those with a content of non-olefinic monomers with functional groups up to a maximum of 3 % (m/m) are specified in section 2 whilst those particularly for British Government Service contracts having in addition a content of non-olefinic monomers with functional groups up to a maximum of 30 % (m/m) are specified in section 3. This British Standard applies to materials ready for normal use in the form of powder, granules and to materials unmodified by colourants, additives, fillers, etc.

It does not apply to masterbatches or to ethylene-propylene copolymer (EPM rubber).

NOTE The titles of the publications referred to in this standard are listed on page 15.