Hindered amine light stabilizers comprising neoalkanediol...

Details Hindered amine light stabilizers comprising neoalkanediol... Hindered amine light stabilizers comprising neoalkanediol...

2005-03-29

2008-10-28

Sanders, Kriellion A (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C546S025000

Reexamination Certificate

active

07442732

ABSTRACT:
Disclosed herein are compounds of the structure:wherein R1, R2, R3, R4, R5, and R6are independently selected alkyl groups, provided that R1is different from R2. The compounds are useful as stabilizers for thermoplastic resins.

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Chmela et al., Hals-phosphite combinations as light and heat stabilizers for polypropylene Polymer Degradation and Stability, 39 (1993) pp. 367-371.

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