Organophosphonate coester stabilizers

Details Organophosphonate coester stabilizers Organophosphonate coester stabilizers

1978-02-02

1980-09-30

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4595R, 260 4595C, 260463, 252404, C07C 6996, C08K 552

Patent

active

042254744

ABSTRACT:
New polyhydric phenol coesters are disclosed of polyhydric phenols, having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, with carbonic acid and an organophosphonic acid having linked to phosphorus as alkyl, aryl, aralkyl or alkaryl group optionally substituted with a phenolic hydroxyl group. The new coesters have molecular weights up to a maximum of about 10,000, preferably from 1000 to 9000, and are highly effective stabilizers for a variety of synthetic resins.
Stabilizer compositions comprising a polyhydric phenol coester and a known polymer stabilizer, as well as synthetic resins stabilized with such stabilizer compositions, are also disclosed.

REFERENCES:
patent: 2999841 (1961-09-01), Csendes
patent: 3026264 (1962-03-01), Rocklin
patent: 3239484 (1966-03-01), Stark
patent: 3244650 (1966-04-01), Hecker
patent: 3404122 (1968-10-01), Fritz
patent: 3433225 (1969-07-01), Pollock
patent: 3544514 (1970-12-01), Schnell et al.
patent: 3737486 (1973-06-01), Schutze et al.
patent: 3869423 (1975-03-01), Minagawa et al.
Polymer Engineering and Science, Jul. 1966, pp. 231 to 239, Article by Gordon et al.

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