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ISO 15038:1999

Current Revision

Plastics -- Organic-perester crosslinking agents for unsaturated-polyester thermosetting materials -- Determination of active-oxygen content

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This International Standard specifies a method of determining the total active-oxygen content of organic peresters.

It applies to those peresters used to initiate crosslinking of unsaturated-polyester thermosets.

The peresters most widely used in the crosslinking of unsaturated-polyester resins are given in Table 1.

Table 1 - Main types of organic perester
PeresterMolecular mass
tert-Butyl perbenzoate194,2
tert-Butyl 2-ethylperhexanoate216,3
iso-Propyl tert-butylperoxy carbonate176,2
tert-Amyl 2-ethylperhexanoate230,3
tert-Amyl perbenzoate208,3
tert-Butyl 3,5,5-trimethylperhexanoate230,4

Butyl peresters may contain traces of tert-butyl hydroperoxide (TBHP), the active oxygen in which can be determined separately from that in the perester itself (see annex A). The active-oxygen content of the perester alone can then be obtained by subtraction.


SDO ISO: International Organization for Standardization
Document Number ISO 15038
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 61/SC 12/WG 5
Publish Date Document Id Type View
Not Available ISO 15038:1999 Revision