2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabili

Details 2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabili 2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabili

1980-10-08

1983-03-29

Hayes, Lorenzo B.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524291, 524343, 546 19, C07D491113, C08K 534

Patent

active

043784437

ABSTRACT:
2,2,6,6-Tetraalkyl-4-piperidyl-bis-spiro-ethers are provided, useful as stabilizers for lessening deterioration due to exposure to light of organic polymeric materials, and having the general formula: ##STR1##

REFERENCES:
patent: 4105626 (1978-08-01), Brunetti et al.
patent: 4128608 (1978-12-01), Minagawa et al.
patent: 4212974 (1980-07-01), Murayama et al.
patent: 4222931 (1980-09-01), Minagawa et al.
patent: 4323684 (1982-04-01), Kubota et al.

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