Abstract: The invention relates to nucleation agents for polyethylenes wherein the nucleating agent is composed of one or more finely divided inorganic materials of halloysite that are dispersed throughout the polyethylene to increase the crystallization rate such that the polyethylenes can be more easily extruded, molded with a much shorter cycle time or thermoformed into intricate parts. The most preferred agent is halloysite nanotubular clay.

Abstract: Disclosed herein are compositions comprising polymers and at least one lubricant comprising at least one silicone oil and at least one oxidized polyethylene. Also disclosed are filled polymer products comprising the compositions disclosed herein as well as mineral fillers, as well as methods of extruding such polymers and the products of the extrusion.

Abstract: Super-miscible blends of nylon copolymers are provided as well as multilayered film structures made therefrom. A nylon composition is a substantially uniform blend of at least one semi-crystalline copolymer I and at least one semi-crystalline copolymer II, wherein the proportion by weight of each of copolymer I and copolymer II. The nylon compositions are extremely uniform, and have only a single melting point rather than individual melting points of the component nylon copolymer parts. Coextruded films of a layer of this nylon composition with an olefin containing polymer are suitable for use as barrier films, such as aroma barrier films, which have reduced curl.

Abstract: This invention relates to a process of forming a polyamide composition having increased crystallization rate which comprises the steps of reducing the oligomeric polyamide content of said composition to less than 8% by weight of the composition, preferably with prior melt shearing, use of 1-2% nucleating filler e.g. talc and a mold release agent.

Abstract: New process for blowing molding polyamide compositions, employing a composition comprising a polyamide and one or more cyanate components, specifically cross-linking cyanates which form a triazine upon curing.

Abstract: This invention relates to a process for improving the optical, thermal and/or mechanical properties of a polymer by subjecting a melt of the polymer to a shearing action at an effective shear rate, as for example a shear rate of greater than about 100 sec.sup.-1, for a time sufficient to improve said properties.

Abstract: This invention relates to a composition comprising (a) at least one polymer selected from the group consisting of poly(chlorotrifluoroethylene) and copolymers of chlorotrifluoroethylene and one or more ethylenic comonomers; wherein said copolymers comprise at least about 50% by weight of chlorotrifluoroethylene and (b) effective amount of one or more nucleating agents selected from the group of compounds consisting of silver octonate, calcium carbonate, potassium benzoate, talc and lays bentonite, montmorillonite, hectorite and derivatives thereof.

Abstract: The invention relates to novel tri-acetal polyol compounds and to a crystalline polyolefin composition having dispersed therein a nucleating agent composed of one or more of said polyol acetals.

Abstract: The invention relates to a crystalline polyolefin composition having dispersed therein a nucleating agent composed of one or more polyesters.

Abstract: This invention relates to a process of preparing polytetrafluoroethylene comprising one or more fractions of polyethylene having a melting point of greater than about 340.degree. C. by subjecting a polytetrafluoroethylene to a shear at elevated temperature.

Abstract: This invention relates to a process of modifying the crystallization temperature (T.sub.cc) of polymers, such as polyesters or polyamides, the polymers produced by this process and the molding compositions containing these polymers. The process comprises cooling a polymer to a temperature sufficient to allow grinding of the polymer to an effective particle and then grinding said polymer to the effective particle size in order that the polymer exhibits an increased T.sub.cc.

Abstract: A process for forming random copolymers which comprises forming a polymer melt containing one or more polyamides and one or more aryl phosphoryl azide compounds, such as diphenyl phosphoryl azide; and heating said melt for a period of time sufficient to form the desired amount of the copolymer.

Abstract: A process for decreasing the melt index and increasing the melt viscosity and melt elasticity of polyamide by adding thereto an effective amount of an aryl phosphoryl azide compound as for example diphenyl phosphoryl azide, and thereafter heating the composition until the desired changes in melt index, melt viscosity and melt elasticity are attained.

Abstract: This invention relates to a process for blow molding polyamide compositions where the molten polyamide includes an effective amount of one or more aryl phosphoryl azide compounds.

Abstract: A process for forming random copolymers which comprises forming a polymer melt containing one or more polyamides and one or more acidic or basic inorganic materials, such as ammonium bisulfate, ammonium biphosphate and sodium biphosphate; and heating said melt for a period of time sufficient to form the desired amount of the copolymer. The random copolymers may be fabricated into films or other products which have desirable properties, and can be useful in making injection molded or extruded products of improved properties.

Abstract: This invention relates to a crystalline polyamide corporation having dispersed therein a nucleating agent composed of one or more finely divided inorganic materials, one or more fatty acid amides and one or more low molecular weight polymers selected from the group consisting of polyolefins, polyoxides and polsulfides.

Abstract: A process for preparing quasi-random copolymers is described which involves heating a mixture of polyamides in the presence of one or more phosphite promotor(s). The process is conducted at temperatures between about 265.degree. C. and 315.degree. C. with the process time generally ranging from about 2 to about 20 minutes. The process is especially useful for preparing copolymers from a mixture of poly(caproamide) and poly(hexamethylene adipamide). The copolymer products prepared in accordance with the process are particularly suitable for the production of plastic films which have improved properties as compared to either of the homopolymers.