Described herein is a polyamide composition and a tubular or pipe multilayer structure including the same.

Provided is a primer composition and the preparation and use thereof. The primer composition comprises a silicone polyether, a reinforcing filler, one or more polydiorganosiloxane polymer(s), and a carrier. The primer composition is particularly designed for use with silicone elastomers, especially for addition (hydrosilylation) curing silicone elastomers. Also provided is a process for improving the adhesion of silicone elastomeric compositions to pre-cured silicone elastomer material substrates via the primer composition.

The invention relates to use of a pipe for transporting chlorinated water, wherein the pipe is a biaxially oriented pipe made by a process comprising the steps of: a) forming a polymer composition comprising a polyolefin into a tube and b) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe.

Provided are a plasticizer composition and a resin composition, and a preparation method thereof. The plasticizer includes a terephthalate-based material and a citrate-based material, which improves physical properties, such as plasticizing efficiency, migration, tensile strength, elongation rate, stress resistance and light resistance, required for a sheet formulation when used as a plasticizer of a resin composition.

The present disclosure provides formulation. The formulation contains a high density polyethylene composition containing (i) a high molecular weight component including an ethylene/a-olefin copolymer, the high molecular weight component having a density from 0.924 to 0.930 g/cc and a high load melt index (121) from 0.3 to 0.9 g/10 min; and (ii) a low molecular weight component including an ethylene-based polymer selected from the group consisting of an ethylene homopolymer and an ethylene/a-olefin copolymer. The high density polyethylene composition has (a) a density from 0.950 to 0.956 g/cc; (b) a high load melt index (121) from 15 to 28 g/10 min; (c) an 121/12 of at least 85; (d) a notched constant tensile load failure time at 35% yield stress of greater than 90 hours; and (e) an environmental stress crack resistance (ESCR) F0 value, according to ASTM D1693—condition B (100% IGEPAL), of greater than 2,000 hours.

A tie layer composition comprising from 60 wt. to 95 wt. % of a first polyethylene composition comprising a first molecular weight ethylene-based polymer component and a second molecular weight ethylene-based polymer component, wherein the polyethylene resin has a density from 0.940 to 0.960 g/cc and a melt index (I2) from 0.01 to 5 g/10 min; and from 5 wt. % to 40 wt. % of a second polyethylene composition comprising: (i) a high density polyethylene having a density greater than or equal to 0.940 g/cc; and (ii) a maleic-anhydride grafted polyethylene.

Composition comprising a heterophasic propylene copolymer with low melt flow rate and rather low amount of xylene cold solubles and a recycled polymer composition being rich in polypropylene.

The present invention relates to a composition comprising an oxidized polyethylene wax, wherein, the composition has an acid value of 11 to 15 mgKOH/g, preferably 12 to 15 mgKOH/g, even more preferred 12 to 14 mgKOH/g according to ASTM D1386 with respect to the total weight of the oxidized polyethylene wax, a weight average molecular weight from 2,000 to 12,000 g/mol, preferably 4,000 to 9,000 g/mol, even more preferred 5,000 to 8,000 g/mol determined according to gel permeation chromatography; and a density from 0.92 to 0.99 g/cm.sup.3, preferably 0.93 to 0.97 g/cm.sup.3, even more preferred 0.93 to 0.95 g/cm.sup.3 according to ASTM D1505, a masterbatch comprising the same, products comprising the masterbatch and the use of the masterbatch and the composition.

Polyolefin compositions comprising i) a polyolefin, ii) one or more phosphorus-containing benzofuranone compounds and iii) one or more hindered phenolic antioxidants are provided excellent protection against discoloration and enhanced thermal stability during melt processing as exhibited by improved retention of molecular weight and maintenance of polymer molecular architecture.

A polypropylene composition made from or containing:

(a) 65 to 85 weight % of a crystalline propylene polymer having an amount of isotactic pentads (mmmm), measured by 13C-MNR on the fraction insoluble in xylene at 25° C. higher than 97.0 molar % and a polydispersity index ranging from 3 to 15;
(b) 5 to 25 weight % of an elastomeric copolymer of ethylene and propylene, having an amount of recurring units deriving from ethylene ranging from 30 to 70 weight % and being partially soluble in xylene at ambient temperature; wherein the fraction soluble in xylene at ambient temperature having an intrinsic viscosity value from 2 to 8 dl/g; and
(c) 5 to 25 weight % of recycled polyethylene (r-PE) having a melt flow rate (190° C./2.16 Kg) from 0.1 to 10 g/10 min,
wherein the polypropylene composition having a melt flow rate (230° C./2.16 kg) ranging from 0.1 to 3.0 g/10 min.