Process Economics Program Report 57A
Published: Sep-76
This report is a supplement to Process Economics Program
Report No. 57, "Polyvinyl Acetate and Polyvinyl Alcohol," issued in November
1970. The present report covers patents and other technical information received
at SRI since the issuance of the previous report. The processes revised in this
report are those for manufacturing polyvinyl acetate (PVAc) emulsion and ethylene-vinyl
acetate (EVA) emulsion, the latter having a vinyl acetate content greater than
50wt%; PVAc resin by suspension polymerization and by solution polymerization;
and polyvinyl alcohol (PVAL) resin by solution polymerization and alcoholysis.
The revisions are largely in the area of polymerization; for example, the reactors
are larger and the reactions are faster than they were in our previous design.
Also evaluated is a process producing polyvinyl butyral (PVB) by solution polymerization
of vinyl acetate followed by alcoholysis of the PVAc to PVAL and condensation
of the PVAL with n-butyraldehyde. Supplemental information is included in Appendices
A through D.
Other PEP Related Reports
The PEP report abstracts shown above are provided as a complete historical reference of related PEP reports. The production cost estimates are updated in the PEP Yearbook. Lists of all PEP reports and reviews are available here.
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