Abstract: A laminate film comprising a polyolefin polymer layer having a surface treated by a flame or corona discharge treatment method and biaxially oriented at about 5.5-10.0 stretch ratio in the machine direction and about 7.0-12.0 stretch ratio in the transverse direction which imparts superior machine direction tensile properties such as Young's modulus of about 350,000 to about 400,000 psi or greater, elongation of 120% or less, and tensile strength of about 27,000 to about 30,000 psi or greater; and a metal layer having an optical density of at least about 1.8 deposited on said treated surface of said polyolefin-based resin layer.

Abstract: A laminate film comprising a polyolefin polymer layer having a surface treated by a flame or corona discharge treatment method and biaxially oriented at about 5.5-10.0 stretch ratio in the machine direction and about 7.0-12.0 stretch ratio in the transverse direction which imparts superior machine direction tensile properties such as Young's modulus of about 350,000 to about 400,000 psi or greater, elongation of 120% or less, and tensile strength of about 27,000 to about 30,000 psi or greater; and a metal layer having an optical density of at least about 1.8 deposited on said treated surface of said polyolefin-based resin layer.

Abstract: Thin-walled biodegradable starch-based articles, particularly sheets of film including at least one first layer of polymeric material including starch and at least one second layer of hydrophobic material, are characterized in that the second layer includes a natural or synthetic wax or mixture of waxes.

Abstract: Difunctional perfluoropolyetheral compounds having polar or non-polar hydrogenated end groups, suitable for being used as inner lubricants in the chemical formulation of the active layer of magnetic recording media, characterized by a solubility in methylethylketone at 20.degree. C. ranging from 0.05% to 2% by weight.

Abstract: Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L, whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or =zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably =CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or =zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is preferably F, and R"=LL=group Y-Z, where:Y=--CH.sub.2 O--, --CH.sub.2 --OCH.sub.2, --CF.sub.2, --CF.sub.

Abstract: Process for the protection and lubrication of surfaces subjected to friction and wear in magnetic recording media, by application of a coating of a polyurethane containing polyoxyfluoroalkylene blocks.

Abstract: Compounds suitable for being used as lubricants, having general formula:RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, (I)orR"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z--CFX--L, (II)whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably=CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or=zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.05 and y+z ranges from 5 to 200 n while X is preferably F, and R"=LL=group A--Y, whereA=--CH.sub.2 O--, --CH.sub.2 --O--CH.sub.2, --CF.sub.2, --CF.sub.2 O,Y=an organic radical covered by one of the following formulas: ##STR1## R.sub.1, R.sub.2 =alkyls C.sub.1 -C.sub.3, E=CHR.sub.

Abstract: Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L,or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L,whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably=CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or=zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is is preferably F, and R"=LL=group Y-Z,where:Y=--CH.sub.2 O--, --CH.sub.2 --OCH.sub.2, --CF.sub.2, --CF.sub.

Abstract: Process for protecting magnetic tapes, during their operation, from the friction and wear caused by the contact with accessories, either or not metallic, forming the cassette which contains said tapes, characterized in that said accessories are lubricated with a neutral perfluoropolyethereal fluid or with a perfluoropolyethereal fluid having functional groups at one or both ends of the polymeric chain.

Abstract: Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --(CFX--L, whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 ro 20 and R is preferably=CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or=zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while x+z/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is preferably F, and R"=LL=group A--Y, whereA=--CH.sub.2 O--, --CH.sub.2 --O--CH.sub.2, --CF.sub.2, CF.sub.2 O--,Y=an organic radical covered by one of the following formulas: ##STR1## where R.sub.1, R.sub.2 =alkyls C.sub.1 -C.sub.3,E=CHR.

Abstract: Lubricating compositions having improved film-forming properties comprising:(A) a perfluoropolyether having a viscosity ranging from 150 to 2,000 cSt (at 20.degree. C.);(B) a perfluoropolyether having a viscosity.ltoreq.50 cSt (at 20.degree. C.);and in which compound (B) is utilized in amounts ranging from 2 to 20% by weight with respect to the sum of (A) and (B).