Process of (co) polymerization of alpha-olefins in the presence

Details Process of (co) polymerization of alpha-olefins in the presence Process of (co) polymerization of alpha-olefins in the presence

1987-07-06

1989-04-25

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524117, 524121, 524126, 524128, 524133, 524135, 524147, 524151, 524153, 526139, 526193, C08K 552, C08K 553

Patent

active

048248851

ABSTRACT:
Stabilizers for organic polymers, consisting of one or more phosphorus-containing compounds of the family of alkyl- and/or phenyl-phosphites, alkyl- and/or phenyl-phosphonites, alkyl- and/or phenyl-diphosphonites, are directly added to the reaction mixture during the (co)polymerization of .alpha.-olefins or of mixtures thereof with other unsaturated monomers.
The so-obtained polymeric compositions result perfectly stabilized, and show a thermo-oxidative resistance higher than that of the same polymeric compositions to which the same antioxidants have been added by a traditional route.

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Williams, J. L. et al-J. Applied Polymer Science, vol. 27, 951-955 (1982).
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Encyclopedia of Polymer Sci. and Eng.-vol. 6, p. 441.
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Polyolefin Plastics-ed. Theordore Kresser (1970) pp. 72,73,78 to 81.
CA 102 (1985) 46425 v; 46426 w; 46427 x; 46428 y.

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