DIN Standards Committee Plastics
Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 2: Poly(vinyl chloride) resins (ISO/DIS 1628-2:2026); German and English version prEN ISO 1628-2:2026
Abstract
This document specifies conditions for the determination of the reduced viscosity (also known as viscosity number) and K-value of PVC resins. It is applicable to resins in powder form which consist of homopolymers of the monomer vinyl chloride and copolymers, terpolymers, etc., of vinyl chloride with one or more other monomers, but where vinyl chloride is the main constituent. The resins can contain small amounts of unpolymerized substances (e.g. emulsifying or suspending agents, catalyst residues, etc.) and other substances added during the course of the polymerization. This document is not applicable, however, to resins having a volatile-matter content in excess of 0,5 % ± 0,1 %, when determined in accordance with ISO 1269:2006. In addition to this, it is not applicable to resins which are not entirely soluble in cyclohexanone.
Begin
2024-12-19
WI
00249A74
Planned document number
DIN EN ISO 1628-2
Project number
05402372
Responsible national committee
NA 054-02-10 AA - Thermoplastic materials
Responsible european committee
Responsible international committee
ISO/TC 61/SC 9/WG 20 - Poly(vinyl chloride)
