BS ISO 15038:1999
Current
The latest, up-to-date edition.
Plastics. Organic-perester crosslinking agents for unsaturated-polyester thermosetting materials. Determination of active-oxygen content
Hardcopy , PDF
English
15-09-1999
Defines a procedure of determining the total active-oxygen content of organic peresters. Applicable to those peresters used to initiate crosslinking of unsaturated-polyester thermosets.
| Committee |
PRI/42
|
| DevelopmentNote |
Supersedes 96/125464 DC. (07/2005)
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
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 Table1. Table1 Main types of organic perester Perester Molecular mass tert-Butyl perbenzoate 194,2 tert-Butyl 2-ethylperhexanoate 216,3 iso-Propyl tert-butylperoxy carbonate 176,2 tert-Amyl 2-ethylperhexanoate 230,3 tert-Amyl perbenzoate 208,3 tert-Butyl 3,5,5-trimethylperhexanoate 230,4 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 annexA). The active-oxygen content of the perester alone can then be obtained by subtraction.
| Standards | Relationship |
| ISO 15038:1999 | Identical |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 385-1:1984 | Laboratory glassware — Burettes — Part 1: General requirements |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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