1,2-ethanediyl-bis-2-piperazinone esters, oligomers thereof, and

Details 1,2-ethanediyl-bis-2-piperazinone esters, oligomers thereof, and 1,2-ethanediyl-bis-2-piperazinone esters, oligomers thereof, and

1986-09-02

1987-09-08

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

544231, 544358, 544384, C08K 534

Patent

active

046924876

ABSTRACT:
A bis-polysubstituted piperazinone ("bis-PSP") in which two PSP moieties are closely coupled through an ethylene linkage, may be esterified so as to incorporate particular moieties in a macromolecule which may have only one bis-PSP unit, or may be esterified to form an oligomer having plural esterified bis-PSP repeating units. The macromolecule not only exhibits excellent UV-stabilization and antioxidant properties in synthetic resinous materials thus performing a highly effective dual function, but also is resistant to extraction with solvents, particularly polar solvents.

REFERENCES:
patent: 3899491 (1975-08-01), Ramey et al.
patent: 4097452 (1978-06-01), Mayer et al.
patent: 4190571 (1980-02-01), Lai et al.
patent: 4240961 (1980-12-01), Lai
patent: 4455401 (1984-06-01), Son et al.
patent: 4466916 (1984-08-01), Lai et al.
patent: 4477665 (1984-10-01), Lai et al.
patent: 4536564 (1985-08-01), Woo

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