Polyethylene formulations and articles produced therefrom, comprise a multimodal high density polyethylene (HDPE) composition, and 0.1 ppm to 300 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cm.sup.3 to 0.970 g/cm.sup.3 when measured according to ASTM D792, and a melt index (I.sub.2) of 0.1 g/10 min. to 10.0 g/10 min. when measured according to ASTM D1238 at 190° C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDF.sub.IR) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDF.sub.IR/CDF.sub.LS) from 0.7 to 2.0.

A resin composition contains: a resin including one or more among a norbornene-based polymer, a monocyclic cycloolefin-based polymer, a cyclic conjugated diene-based polymer, a vinyl alicyclic hydrocarbon polymer, and hydrogenated products thereof; and a conductive fibrous filler having an aspect ratio of not less than 5 and not more than 500.

Thermoplastic compositions include from about 40 wt % to about 90 wt % of a crystalline polymer, from about 5 wt % to about 50 wt % basalt fibers, and from about 1 wt % to about 20 wt % of an impact modifier. In some aspects the crystalline polymer includes polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), copolymers thereof, or a combination thereof. The thermoplastic compositions are suitable for use in nano molding technology (NMT) applications, and in particular for consumer electronics applications.

The disclosure relates to a crystal nucleating agent composition including a compound represented by formula (1) and a compound represented by formula (2).

##STR00001##

R.sup.1 is a C.sub.1-C.sub.4 alkyl group, R.sup.1 binds to the carbon at position 3 or 4 of a cyclohexane ring. When M.sub.1 is a calcium ion or a hydroxyaluminum ion, a is 2, and b is 1, and when M.sub.1 is a sodium ion or a lithiumion, a is 1, and b is 2.

##STR00002##

R.sup.2 to R.sup.5 are the same or different, and each represents a hydrogen atom or a C.sub.1-C.sub.9 alkyl group, R.sup.6 is a hydrogen atom or a C.sub.1-C.sub.3 alkyl group. When M.sub.2 is an alkali metal ion, c is 1, and d is 1, and when M.sub.2 is an alkaline earth metal ion, a zinc ion, or ahydroxyaluminum ion, c is 2, and d is 2.

The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR.sub.2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.

Provided is a water dispersion of a vinyl halide copolymer having favorable film formation property after long-term storage while maintaining high water vapor barrier property of a film after coating. A water dispersion of a vinyl halide copolymer comprises a vinyl halide copolymer containing a structural unit derived from a vinyl halide monomer and a structural unit derived from a copolymerization monomer whose reactivity ratio r1 is less than 0.7, wherein a mass ratio of the structural unit derived from the copolymerization monomer is 1 part by mass or more with respect to 100 parts by mass in total of the structural unit derived from the vinyl halide monomer, the structural unit derived from the copolymerization monomer, and a structural unit derived from a copolymerization monomer whose reactivity ratio r1 is 0.7 or more, and S1/(S1+S2) is 0 or more and 0.33 or less.

Linear low density polyethylene (LLDPE) that is prepared with a single site catalyst has relatively low modulus in comparison to a polyethylene of similar melt index and density made with a conventional Zeigler Natta catalyst. Films that are prepared from polyethylene having a low modulus have a soft and flexible “feel”, which is undesirable for some packaging applications. The present invention provides a method to increase the modulus of single site catalyzed polyethylene.

A polyolefin composition is foamed by a process in which a nucleator is used, and the nucleator comprises 80% or more of unagglomerated fluororesin particles and/or agglomerates of fluororesin particles in which both the unagglomerated particles and the agglomerates are less than 1 μm in size.

A polyolefin composition is foamed by a process in which a nucleator is used, and the nucleator comprises 80% or more of unagglomerated fluororesin particles and/or agglomerates of fluororesin particles in which both the unagglomerated particles and the agglomerates are less than 1 μm in size.

Heterophasic polypropylene composition with an advantageous, respectively stiffness/impact balance and its use.