Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2006-02-21
2006-02-21
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
active
07001940
ABSTRACT:
The present invention relates to the use of a stabilising composition free of derivatives of 6-aminouracyl or 6-aminothiouracyl type, and comprising at least one β-diketone bearing two aromatic nuclei, at least one of which bears at least one substituent on one of the two orthopositions or on the paraposition; the said substituent being chosen from —R, —OR, —SR, —COOH, —O—CF3and —S—CF3radicals, in which formulae R is an alkyl radical. The invention also relates to halogenated polymers comprising such a stabilising composition.
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patent: 4221687 (1980-09-01), Minagawa
patent: 5102933 (1992-04-01), Bae et al.
patent: 5147917 (1992-09-01), Sugawara et al.
patent: 5244949 (1993-09-01), Wirth et al.
patent: 5283273 (1994-02-01), Sander
patent: 0 446 685 (1991-09-01), None
International Search Report.
Dury Michel
Prud'Homme Christian
Rhodia Chimie
Szekely Peter
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