ISO 1625:1998 PDF

Scope: This International Standard specifies a method for the determination of the non-volatile matter content of polymer dispersions. The method is applicable to all polymer dispersions whose residue is chemically stable under the test conditions. The method is also applicable to formulated polymer dispersions containing fillers, pigments and other auxiliaries. NOTES 1 This method is suitable for synthetic rubber latices provided heating for a specific period of time is considered appropriate 0,5 mg). 2 The residue from unplasticized polymer dispersions and rubber latices consists essentially of the polymeric material and of small quantities of auxiliaries such as emulsifiers, protective colloids, stabilizers, solvents added as film-forming agents and — especially for rubber latex concentrate — preserving agents. For plasticized samples, the residue by definition normally includes the plasticizer. 3 In-house methods for the determination of non-volatile matter often include drying with infrared or microwave radiation. Standardization of such methods is not possible, since they are not generally applicable. Several polymer compositions tend to decompose during such treatment and therefore give incorrect results.

ISO 1625:1998 history

1998 ISO 1625:1998 Plastics - Polymer dispersions - Determination of non-volatile matter (residue) at specified temperatures
1977 ISO 1625:1977 Plastics; Aqueous dispersions of polymers and copolymers; Determination of residue at 105 degrees C