Process for the stabilization of polyacetal reins

Details Process for the stabilization of polyacetal reins Process for the stabilization of polyacetal reins

1975-08-19

1976-12-21

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 67FP, C08G 234, C08G 232

Patent

active

039987914

ABSTRACT:
Process for the stabilization of polyacetal resins having terminal hydroxyl groups, which comprises reacting a reagent capable of etherifying the hydroxyl groups with the polyacetal resins suspended in a reaction medium that is liquid under the conditions used, the said reaction medium consisting of at least one substance that is a solvent for the polymer and at least one substance that is a non-solvent for the polymer, the said solvent and non-solvent substances being completely miscible at the reaction temperatures but immiscible or partly miscible at temperature substantially lower than the reaction temperatures, and carrying out the operation in the presence of catalytic quantities of one or more compounds selected from the groups consisting of

REFERENCES:
patent: 3161616 (1964-12-01), Brown et al.
patent: 3207727 (1965-09-01), Matsubayashi et al.
patent: 3236810 (1966-02-01), Leverett et al.
patent: 3393179 (1968-07-01), Leverett
patent: 3875117 (1975-04-01), Ackermann et al.

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