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ASTM D4875-18 PDF Download

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Standard Test Methods of Polyurethane Raw Materials: Determination of the Polymerized Ethylene Oxide Content of Polyether Polyols
standard by ASTM International, 04/01/2018

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Description

1.1 Test Method A-Proton Nuclear Magnetic Resonance Spectroscopy (1H NMR) measures polymerized ethylene oxide (EO) content of ethylene oxide (EO) propylene oxide (PO) polyether polyols used in flexible polyurethane foams and non-foams. It is suitable for diols initiated from glycols of EO or PO containing EO percentages >5. For triols initiated with glycerol (glycerin) and trimethylolpropane, an uncorrected EO value is obtained since both initiators have protons that contribute to the EO measurement.

Product Details

Published:
04/01/2018
Number of Pages:
7
File Size:
1 file , 240 KB
Redline File Size:
2 files , 840 KB