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ASTM D7252-06
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
5 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
19.020 Test conditions and procedures in general / Условия и методика испытаний в целом, 83.040.01 Raw materials for rubber and plastics in general / Сырье для производства резины и пластмасс в целом, 83.100 Cellular materials / Поропласты
Сборник (ASTM):
08.03 Plastics (III): D5117 – latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products / Пластмасса (III): D5117 – и далее; Армированные пластиковые трубопроводные системы и химическое оборудование; Пластмассовые строительные изделия
Тематика:
Plastics
Описание
Область применения

1.1 This test method determines the percent by weight of monomeric isomers and total monomer in crude or modified isocyanates. The test method is applicable to methylene-bis-(4-phenylisocyanate) (MDI) and polymethylene polyphenylisocyanates (PMDI). (See Note 1.)

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Note 1

There is no known ISO equivalent to this standard.

Ключевые слова:
chromatography; diisocyanate; HPLC; isocyanate; isomers; monomer; polymeric MDI; polyurethane raw materials; pure MDI