Abstract:
A pipe or comprising a melt-mixed blend of polyamide and incompatible polyolefin and a compatibilizing agent where the polyamide exists as a discontinuous phase that is dispersed in a polyolefin matrix and wherein nanoclay is exfoliated in the polyamide phase. The pipe has enhanced resistance to the permeation of hydrocarbons relative to polyethylene. A method for making a pipe having enhanced resistance to the permeation of hydrocarbons.
Abstract:
A pipe or comprising a melt-mixed blend of polyamide and incompatible polyolefin and a compatibilizing agent where the polyamide exists as a discontinuous phase that is dispersed in a polyolefin matrix and wherein nanoclay is exfoliated in the polyamide phase. The pipe has enhanced resistance to the permeation of hydrocarbons relative to polyethylene. A method for making a pipe having enhanced resistance to the permeation of hydrocarbons.
Abstract:
Packaging materials made from water-soluble nylons are disclosed, that readily contain materials such as caustic chemicals and upon exposure to water dissolve to provide for the release of the chemical into an aqueous environment. The materials are made from select polyether diamines and select aliphatic dicarboxylic acids.
Abstract:
Incorporation of certain phosphorus compounds in conjunction with certain bases into a polyamide melt or a polyamide manufacturing polymerization process results in a polyamide having improved color properties.
Abstract:
Lubricant-containing pellets of thermoplastic resins which have a continuous lubricant film firmly adhering to the surface of the pellets are created by a process which mixes and combines uncoated pellets of thermoplastic resins with a metal salt of a fatty acid lubricant at a temperature of from 20.degree. C. to 50.degree. C.
Abstract:
A process is disclosed for preparing a polyamide by polymerizing a diacid and a diamine, aminocarboxylic acid or lactam in the presence of excess of either acid or amine such that the ratio of acid to amine end groups or the ratio of amine end groups to acidend groups in the polymer is at least 2.0:1.0.
Abstract:
A terpolyamide resin having components of nylon 612 or 610, nylon 6I or 6T (wherein I is an isophthalic acid moiety and T is a terephthalic acid moiety) and nylon 69, 610, 636, or 612 is provided; the terpolyamide is especially resistant to zinc chloride and is useful for making molded articles and extruded shapes such as flexible tubing.
Abstract:
Marine umbilicals are provided comprising polyamide compositions having good hydrolysis resistance and that may optionally contain plasticizer.
Abstract:
Novel coating solutions are disclosed that promote desirable adhesion to substrates formed from nylon, polyester, or a combination thereof. These coating solutions include nylons having specific solubility together with select formaldehyde resins and resin mixtures. The solutions provide superior adhesion and are therefore attractive to thread applications as well as formed structures.
Abstract:
Incorporation of certain phosphorus compounds in conjunction with certain multivalent metal compounds into a polyamide melt or a polyamide manufacturing polymerization process results in a polyamide having improved color properties.