ASTM D2222 – Standard Test Method for Methanol Extract of Vinyl Chloride Resins
Description:
Significance and Use
5.1 The methanol extract test is most commonly employed with paste- or dispersion-type vinyl resins intended for organosol or plastisol applications. The test result is a quantitative measure of the methanol-soluble, nonvolatile, essentially nonpolymeric content of the virgin, unmodified resin. The major ingredient removed is the soap system employed in the polymerization reaction; methanol extract provides a measure of lot-to-lot uniformity of the resin in this respect.
Scope
1.1 This test method covers the determination of the methanol extract, or nonvolatile methanol-soluble portion, of vinyl chloride resins.
1.2 The methanol extract test is most commonly employed with paste- or dispersion-type vinyl resins intended for organosol or plastisol applications. The major ingredient removed is the soap system employed in the polymerization reaction.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
ASTM D2216