Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-11-06
2007-11-06
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S147000, C558S155000, C558S218000
Reexamination Certificate
active
11087267
ABSTRACT:
The present invention discloses mono-, bis- and tris-nonylcyclohexylphosphite esters, polyolefin compositions stabilized against the deleterious effects of melt processing, heat aging and exposure to combustion products of natural gas which comprise the nonylcyclohexylphosphite esters as stabilizers, and a process towards stabilizing polyolefin compositions by incorporating in or applying thereto the nonylcyclohexylphosphite esters.
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patent: 3756906 (1973-09-01), Leyland et al.
patent: 6541549 (2003-04-01), Archibald et al.
patent: 2003/0096890 (2003-05-01), Archibald et al.
patent: 2007/0105992 (2007-05-01), Zahalka et al.
R. Gächter et al., Plastics Additives Handbook, 4thEd., (1993), pp. 40-71.
Babiarz Joseph E.
Evans Samuel
King Roswell E.
Shum Sai P.
Ciba Specialty Chemicals Corporation
Stevenson Tyler A.
Szekely Peter
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