Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizer

Details Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizer Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizer

1987-10-26

1989-01-17

Morgan, Kriellion

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 83, 524 84, 524 99, 524100, 524102, 524111, 524118, 524119, 524120, 524141, 524148, 524151, 524153, 524157, 524171, 524316, 524321, 524324, 524326, 524330, 524334, 524335, 524336, 524337, 546 81, 546 87, C08K 534, C07D40104

Patent

active

047988363

ABSTRACT:
Bis-(2,2,6,6-tetramethyl-piperidyl)diimides are provided, having the formula: ##STR1## in which R is selected from the group consisting of hydrogen; oxyl; alkyl and alkenyl having from one to about eighteen carbon atoms; epoxy and hydroxyalkyl having from two to about eight carbon atoms; acyl having from two to about eight carbon atoms; and phenalkyl having from seven to about twelve carbon atoms; and Z is a tetravalent aliphatic or cycloaliphatic hydrocarbon group having from two to about eighteen carbon atoms; and stabilizer and synthetic polymer compositions containing such diimides having improved resistance to deterioration when exposed to light.

REFERENCES:
patent: 3781237 (1973-12-01), Alvino et al.
patent: 4001181 (1977-01-01), Ramey et al.
patent: 4191683 (1980-03-01), Brunetti et al.
patent: 4198334 (1980-04-01), Rasberger
patent: 4356307 (1982-10-01), Kelkenberg et al.
patent: 4396735 (1983-08-01), Minagawa et al.
patent: 4594375 (1986-06-01), Krishnan et al.
patent: 4609699 (1986-09-01), Meyer et al.
patent: 4721736 (1988-01-01), Rei et al.

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