Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethy

Details Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethy Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethy

1976-11-22

1978-08-29

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 457PH, 260 458R, 260 458NT, 260 4575W, 26029364, 26029366, C08K 534

Patent

active

041103068

ABSTRACT:
Stabilizers for organic polymeric materials are provided, comprising a triphosphite, an acid phosphite, and a 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester having the general formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## Y is selected from the group consisting of hydrogen and O; R.sub.6 is lower alkyl having from one to six carbon atoms;

REFERENCES:
patent: 3640928 (1972-02-01), Murayama et al.
patent: 3840494 (1974-10-01), Murayama et al.
patent: 3899464 (1975-08-01), Murayama et al.
patent: 3960809 (1976-06-01), Ramey et al.
patent: 4021432 (1977-05-01), Holt

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