Polyolefin compositions useful for making films having improved tensiometric properties and strength. The compositions comprise from 92 to 99% by weight of (1) a polyolefin having a melt index of 0.5 to 5 that is either isotactic poly-1-butene or a butene-ethylene copolymer containing less than 2% of ethylene units, and (2) from 1 to 8% of an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 5 to 35% by weight and a melt index of from 0.5 to 5.

The present invention provides a bitumen-polymer composition comprising 95 to 99% by weight of a bitumen and 1 to 5% by weight of a terpolymer having a melt index between 5 and 50 dg/min. The terpolymer comprises 88 to 98.7 mol % of units derived from ethylene; 1 to 10 mol % of units derived from at least one ester selected from the group consisting of alkyl acrylates and methacrylates, the alkyl group having from 1 to 6 carbon atoms; and 0.3 to 3 mol % of units derived from maleic anhydride. Th...

A composite film for packaging foods having at least one layer of a thermoplastic film of low density polyethylene, polypropylene, polybutene, polyamide, polystyrene or polyvinyl chloride having a thickness between 25 and 3,000 .mu.m, and another layer of a terpolymer film having a thickness between 10 and 100 .mu.m. The terpolymer film contains from 88 to 98.7 mol % of units derived from ethylene, from 1 to 10 mol % of units derived from an ester of an alkyl acrylate or an alkyl methacrylate, t...

A composition for the manufacture of hot-melt adhesives, in which the improvement comprises a terpolymer of ethylene having a melt index between 5 and 500 dg/minute and comprising from 1 to 10 mol % of units derived from an ester selected from alkyl acrylates and methacrylates, the alkyl group having from 1 to 6 carbon atoms, and from 0.3 to 3 mol % of units derived from maleic anhydride. The composition also contains at least one tackifying resin and may contain at least one compound selected f...

Metal coated with a polymer film having a thickness between 10 and 500 .mu.m. The film is a terpolymer comprising 88 to 98.7 mole % of units derived from ethylene, from 1 to 10 mol % of units derived from an alkyl (meth)-acrylate, and from 0.3 to 3 mol % of units derived from maleic anhydride, and optionally may contain up to 5 mol % of units derived from a fourth monomer selected from .alpha.-olefins having from 3 to 8 carbon atoms, monoalkyl maleates and dialkyl maleates in which the alkyl gro...

A composition for sealing products comprising from 35 to 95 weight percent of at least one distillation product selected from the group consisting of bitumens and soft pitches, and from 5 to 65 weight pecent of a terpolymer having a melt index between 1 and 10 dg/minute and comprising: (i) from 88 to 98.7 mole percent of units derived from ethylene (ii) from 1 to 10 mole percent of units derived from an ester selected from alkyl acrylates and methacrylates, wherein said alkyl group has from 1 to...

Modified copolymers which have viscosities which vary very markedly with changes in temperature are obtained by malaxating a statistical copolymer of ethylene and maleic anhydride containing between 0.5 and 20% by weight of units derived from maleic anhydride and having a melt index of between 0.1 and 500 dg/min, in the molten state with at least one chemical reagent containing at least two reactive groups which are amine or alcoholic --OH groups but at most primary or secondary amine group and ...

The dielectric spacer between the conductive electrodes of an electrical capacitor is a biaxially oriented film made from a mixture of less than 80 percent by weight of isotactic polypropylene and more than 20 percent by weight of isotactic polybutene-1.

The invention concerns a strip or sheet of ferritic stainless steel of the following composition (% by weight): (C+N)<.060; Si<0.9; Mn<1; Cr=15 to 19; Mo<1; Ni<0.5; Ti<0.1; Cu<0.4; S<0.02; P<0.045; Zr=0.10 to 0.40, and 7(C+N).ltoreq.Zr.ltoreq.7(C+N)+0.15; Nb=0.25 to 0.55, in non-combined form; Al=0.020 to 0.080; Fe=the balance, in which Al is essentially in solid solution. The process for the production of the sheet or strip comprises a final annealing operation which ...

A modified copolymer of ethylene and of at least one .alpha.-olefin having from 3 to 12 carbon atoms, comprising from 0.5 to 10 mole percent of units derived from the .alpha.-olefin, wherein the measured limiting viscosity of the copolymer is between 1.5 and 10 times the limiting viscosity of the copolymer calculated from the molecular weight distribution of the copolymer. Process for producing these copolymers employing at least one free-radical initiator.