Stabilization of polyether polyol, polyester polyol or...

Details Stabilization of polyether polyol, polyester polyol or... Stabilization of polyether polyol, polyester polyol or...

2011-03-22

2011-03-22

Sanders, Kriellion A (Department: 1761)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S099000, C524S100000, C524S227000, C524S291000

Reexamination Certificate

active

07910642

ABSTRACT:
The present invention pertains to compositions comprising(a) a polyether polyol, a polyester polyol or a polyurethane,(b) a UV-absorber of formula (I) and/or a hindered amine light stabilizer of formula (II)wherein R1and R2are each independently C1-C4alkyl or C1-C4alkyoxy,and(c) at least one further UV-absorber and/or hindered amine light stabilizer if only one of the components (I) and (II) is presentwith the proviso that component (c) is not a compound of formula (A)-(D) as defined in claim 1.

REFERENCES:
patent: 4935275 (1990-06-01), Ushida et al.
patent: 6881774 (2005-04-01), Schrinner et al.
patent: 7148278 (2006-12-01), Bulpett et al.
patent: 1407005 (2003-04-01), None
patent: 10148702 (2003-04-01), None
patent: 0714931 (1996-06-01), None
patent: 03/078148 (2003-09-01), None
patent: 03/095543 (2003-11-01), None
patent: 2004/068217 (2004-08-01), None
Derwent Abstract 2003-470465/45 for DE 10148702, Apr. 10, 2003.
English language abstract for EP 0714931, Jun. 5, 1996.

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