Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-01-18
1994-04-19
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524179, 524180, 525149, 525194, 525290, 525297, C08K 557, C08K 558, C08F 800, C08F27902
Patent
active
053045890
ABSTRACT:
Oxidatively stabilized polyolefin polymers containing an antioxidant are made more resistant to loss of antioxidant by converting at least some of the antioxidant comprising a polymer of dicyclopentadiene and a phenolic compound into a form non extractable with cyclohexane. The conversion is preferably by reaction in the melt phase in the presence of a radical initiator. Addition of organotin esters, sulphides, oxides or thioethers reduces the color.
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"Development in Polymer Stabilization" Ed. by Scott Applied Science Pub. 1981, pp. 181-221.
"Rubber Chemistry and Technology", Kuczkowski et al. 1984, 57, pp. 620-651.
Davidson Neil S.
Di Murro Colette A. A.
Leiper Hilda A.
Wilkinson Kenneth
BP Chemicals Limited
Michl Paul R.
Yoon Tae H.
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