Abstract: Blend compositions of ethylene inter-polymers have equal or improved processability when compared to blends of high pressure produced polyethylenes (HP-LDPE) and linear low density ethylene inter-polymers (HP-LDPE/LLDPE). Additionally, the blends of ethylene inter-polymers have superior optical and physical properties to the HP-LDPE/LLDPE blends. The ethylene inter-polymer blends include a first ethylene inter-polymer having, an nRSI greater than 26, a PDI of greater than 3, or less than 15, a CCLDI greater than 1.0, or less than 10.0, and a branching factor less than 0.7. These inter-polymer blends also include a second ethylene inter-polymer that has an nRSI of greater than 1 or less than 11, a PDI of greater than 1.5 or less than 6, a CCLDI greater than 1 or less than 20, and a branching factor greater than factor 0.70, or less than 1.

Abstract: A finishing process for a polymer containing an active catalyst residue. Starting polymer has a crystallinity of less than 10 percent by weight and is maintained in an essentially oxygen free reaction zone at a temperature less than polymer sticking temperature. The polymer is stabilized and acids neutralized by adding 2, 6-di-tert-butyl-4-alkyl phenol and/or alkyl -3-(3-5 -di-tert-butyl-4-hydroxy phenyl)- propionate and zinc oxide, hydrotalcite, or a zeolite. Resulting polymer is then treated with catalyst deactivators including water, and then mixed with photo-oxidative stabilizers.

Abstract: A multipurpose additive system comprising(a) an alkali metal zeolite, an alkaline earth metal zeolite, zinc zeolite, or mixtures thereof;(b)(i) an aliphatic compound containing at least six carbon atoms substituted with one or more polar functional groups sufficient to provide a polar group frequency factor of at least about 0.01; or(ii) a polydimethylsiloxane compound containing from 4 to about 500 siloxane units, substituted with one or more polar functional groups sufficient to provide a polar group frequency factor of at least about 0.01; or(iii) mixtures thereof in any proportion; and(c) optionally, zinc oxide.

Abstract: A process for preventing agglomeration of sticky polymers in a polymerization system which comprises adding to said polymerization system about 0.3 to about 80 weight percent based on the weight of the final product of an inert particulate material having an organo-modified polydimethylsiloxane (OM-PDMS) surface coating thereon.

Abstract: A method for preventing agglomeration of sticky polymers in a fluidized bed which comprises adding to said fluidized bed and 0.3 to about 80 weight percent based on the weight of the final product of an inert particulate material having a PDMS surface coating thereon.

Abstract: A polymer impurity deactivator comprising a metal hydroxide, a hydrotalcite, or another metal oxide compound, or mixtures thereof, each of which compounds or mixtures(i) contain at least one zinc, magnesium, or aluminum cation; and(ii) have been surface treated, or mixed, with a hydrocarbon based or siloxane based amphiphatic compound, each amphipathic compound having one or more polar groups incorporated into its molecular structure to provide a polar group frequency factor of at least about 0.01.

Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.

Abstract: The present invention relates to olefin polymers stabilized with polydialkylsiloxanes containing pendant sterically hindered phenol moieties. The compounds are represented by the general formula MD.sub.x D*.sub.y M.sub.A 2 wherein M=R"R.sub.2 SiO.sub.

Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.

Abstract: A polysiloxane having pendant, sterically-hindered heterocyclic moieties attached to a siloxane chain, and their use in stabilizing synthetic polymer compositions.

Abstract: The present invention relates to olefin polymers stabilized with polysiloxanes containing sterically hindered heterocyclic moieties, said polysiloxanes represented by the general formula M*.sub.v D.sub.x D*.sub.y T.sub.z Q.sub.w M*.sub.v.

Abstract: The present invention relates to polysiloxanes containing pendant sterically hindered phenol moieties. The compounds are represented by the general formula MD.sub.X D'.sub.y M.

Abstract: A non-volatile, anti-gel compound having a chain of at least about 5 repeat units of an alkylene oxide and which is soluble in olefin polymers, and an inorganic anti-block agent having a substantially neutral pH are added to a film grade transition metal catalyzed resin containing halide residues such as Ziegler-Natta catalyzed olefin polymer compositions to prevent: (1) gel streaking/pinstriping during film extrusion processes; (2) blocking of the extruded film; and (3) discoloration of the extruded film upon aging. The anti-gel compound has a molecular weight between about 200 and about 4,000,000 Daltons.

Abstract: Olefin polymer compositions containing silicone additives which can be extruded through relatively narrow die gaps at commercial extrusion rates to provide film material characterized by improved mechanical and optical properties. The silicone additives have the formula: ##STR1## wherein each R, which can be the same or different, are alkyl radicals, R.sup.1 is a monovalent organic radical containing at least one ethyleneoxide group, vicinal epoxy group or amino group and x and y, which can be the same or different, each have a value of at least one.

Abstract: A non-volatile, anti-gel compound having a chain of at least about 5 repeat units of an alkylene oxide and which is soluble in olefin polymers, and an inorganic anti-block agent having a substantially neutral pH are added to a film grade transition metal catalyzed resin containing halide residues such as Ziegler-Natta catalyzed olefin polymer compositions to prevent: (1) gel streaking/pinstriping during film extrusion processes; (2) blocking of the extruded film; and (3) discoloration of the extruded film upon aging. The anti-gel compound has a molecular weight between about 200 and about 4,000,000 Daltons.