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EN ISO 1599:1999

Current

Current

The latest, up-to-date edition.

Plastics - Cellulose acetate - Determination of viscosity loss on moulding (ISO 1599:1990)

Published date

19-05-1999

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This method is suitable for cellulose acetate which does not contain additives, fillers, etc. which may interfere with the determination of viscosity. It is suitable for cellulose acetate having an acetic acid yield above 50 %. Cellulose acetate plasticized with dimethyl phthalate is moulded under specified conditions of temperature, pressure and time. After cooling, the moulding is ground up. The viscosity ratio of the ground material from the moulding and also that of the original cellulose acetate material are determined in accordance with ISO 1157. The percentage viscosity loss is calculated from the values of viscosity before and after moulding. This second edition cancels and replaces the first edition ISO 1599:1975.

Committee
CEN/TC 249
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

ISO 565:1990 Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
ISO 1157:1990 Plastics Cellulose acetate in dilute solution Determination of viscosity number and viscosity ratio
ISO 585:1990 Plastics Unplasticized cellulose acetate Determination of moisture content

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