Process for the manufacture of polylactones derived from poly-.a

Details Process for the manufacture of polylactones derived from poly-.a Process for the manufacture of polylactones derived from poly-.a

1974-07-18

1976-10-05

Myers, Jane S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 783UA, 260539R, 526227, 526229, 526232, 526292, C07D30732

Patent

active

039844390

ABSTRACT:
Process for the manufacture of polylactones derived from poly-.alpha.-hydroxyacrylic acids comprises heating a liquid aqueous solution of .alpha., .beta.-dichloropropionic acid to a temperature above 100.degree.C to convert the .alpha.,.beta.-dichloropropionic acid to the corresponding .alpha.-chloroacrylic acid and polymerizing the .alpha.-chloroacrylic acid in the aqueous solution in the presence of a polymerization catalyst to polymerize, hydrolyze and lactonize the .alpha.-chloroacrylic acid.
The products obtained can be used as intermediates for the synthesis of salts of poly-.alpha.-hydroxyacrylic acids.

REFERENCES:
patent: 2338967 (1944-01-01), Pollack
patent: 3890288 (1975-06-01), Vogt et al.
Minsk et al., J.A.C.S. 72, 2650-2654 (1950).
Marvel et al., J.A.C.S. 62, 3495-3498 (1940).

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