Polycarbonate compositions comprising hindered amine light stabi

Details Polycarbonate compositions comprising hindered amine light stabi Polycarbonate compositions comprising hindered amine light stabi

1997-08-27

1999-01-05

Mosley, Terressa

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544349, 544357, C07D24104

Patent

active

058564861

ABSTRACT:
The instant invention relates to weatherable polycarbonate compositions (formulations or blends) comprising piperazinone or piperazine dione based HALS. These piperazinone or piperazine dione based HALS impart photostability to the polycarbonate formulations, thereby reducing yellowing or other forms of light induced degradation.

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patent: 4480092 (1984-10-01), Lai et al.
patent: 4525504 (1985-06-01), Morris et al.
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