Polyamide compositions and articles made therefrom

Abstract

The present disclosure relates to compositions and compounded compositions including polyamide and a maleated polyolefin, articles formed from the same such as extruded or molded articles, and methods of making the compositions and articles. A composition includes a condensation polyamide that is at least 30 wt % of the composition and that is the predominant polyamide in the composition. The composition also includes from ≥10 wt % to ≤50 wt % of a maleic anhydride grafted polyolefin having a grafted maleic anhydride incorporation of ≥0.05 to ≤1.5 wt % based on total weight of the maleated polyolefin.

What is claimed is: 
     
         1 . A reinforced conduit comprising:
 an extruded conduit comprising
 a condensation polyamide composition, 
 a reacted composition that is a reaction product of the condensation polyamide composition, 
 a compounded polyamide composition that comprises
 the condensation polyamide composition, the reacted composition, or a combination thereof, and 
 one or more other components, or 
 
 a combination thereof; and 
   a metal reinforcement;   wherein the condensation polyamide composition comprises
 a condensation polyamide, wherein the condensation polyamide is at least 30 wt % of the composition, wherein the condensation polyamide is the predominant polyamide in the composition, and 
 from ≥10 wt % to ≤50 wt % of a maleated polyolefin, wherein the maleated polyolefin comprises maleic anhydride grafted onto a polyolefin backbone, the maleated polyolefin having a grafted maleic anhydride incorporation of ≥0.05 to ≤1.5 wt % based on total weight of the maleated polyolefin. 
   
     
     
         2 . The reinforced conduit of  claim 1 , wherein the extruded conduit comprises the compounded polyamide composition, wherein the one or more other components comprise a chain extender that is ≥0.05 to ≤5 wt % of the compounded polyamide composition, and wherein the chain extender comprises a maleic anhydride-polyolefin. 
     
     
         3 . The reinforced conduit of  claim 1 , wherein the condensation polyamide has an amine end group (AEG) number of ≥65 milliequivalents per kg (meq/kg) and ≤130 meq/kg, wherein the condensation polyamide is chosen from nylon 66, nylon 66/6T, nylon 66/DI, and a combination thereof. 
     
     
         4 . The reinforced conduit of  claim 1 , wherein:
 the maleated polyolefin, or domains thereof, is/are uniformly distributed in the condensation polyamide or in the composition; or   the condensation polyamide has an RV of at least 35, as determined by the formic acid method of ASTM D789; or   a combination thereof.   
     
     
         5 . The reinforced conduit of  claim 1 , wherein the extruded conduit comprises the reacted polyamide composition, and wherein the reacted composition comprises a polyamide-polyolefin copolymer formed from at least partial reaction of the condensation polyamide and the maleated polyolefin. 
     
     
         6 . The reinforced conduit of  claim 1 , wherein the extruded conduit comprises ≥1 wt % to ≤50 wt % glass fibers. 
     
     
         7 . The reinforced conduit of  claim 1 , wherein the extruded conduit is substantially free of glass fibers. 
     
     
         8 . The reinforced conduit of  claim 1 , wherein the metal reinforcement comprises steel, aluminum, beryllium, copper, an alloy thereof, or a combination thereof, and wherein the metal reinforcement including any protective coating thereon comprising a hydrophobic and/or water-resistant material has a thickness of 0.01 microns to 100 mm. 
     
     
         9 . The reinforced conduit of  claim 1 , wherein the metal reinforcement comprises steel comprising carbon steel, stainless steel, austenitic steel, 304, 304L, 316, 316L, or a combination thereof. 
     
     
         10 . The reinforced conduit of  claim 1 , wherein the metal reinforcement comprises a protective coating that reduces and/or prevents corrosion to the metal reinforcement, and wherein the protective coating comprises a hydrophobic and/or water-resistant material. 
     
     
         11 . The reinforced conduit of  claim 1 , wherein
 the extruded conduit has a wall thickness of 0.1 mm to 100 mm;   the extruded conduit has an inside diameter of 1 mm to 1000 mm;   the reinforced conduit has an inside diameter of 10 mm to 1000 mm; and   the reinforced conduit has a total conduit wall thickness of 1 mm to 200 mm.   
     
     
         12 . The reinforced conduit of  claim 1 , wherein the extruded conduit contacts the metal reinforcement on an exterior of the extruded conduit, an interior of the extruded conduit, or a combination thereof. 
     
     
         13 . The reinforced conduit of  claim 1 , wherein the metal reinforcement is partially or fully embedded within the extruded conduit. 
     
     
         14 . The reinforced conduit of  claim 1 , wherein the metal reinforcement comprises a sleeve, an unperforated solid sleeve, a perforated sleeve, a mesh sleeve, a braided sleeve, a pipe, a ring, a mesh, a braid, a fiber strand, or a combination thereof. 
     
     
         15 . The reinforced conduit of  claim 1 , wherein
 the reinforced conduit comprises more than one of the metal reinforcements; or   the reinforced conduit comprises more than one of the extruded conduits, wherein each extruded conduit has a composition that is independently selected, wherein each extruded conduit is a different layer in the reinforced conduit; or   a combination thereof.   
     
     
         16 . The reinforced conduit of  claim 1 , wherein the reinforced conduit comprises two or more of the extruded conduits, and wherein two or more of the extruded conduits contact one another along their length. 
     
     
         17 . The reinforced conduit of  claim 1 , wherein
 the reinforced conduit comprises two or more of the extruded conduits;   the reinforced conduit is substantially free of contact between two of the extruded conduits along their length; and   the metal reinforcement is present between and contacts the two extruded conduits along their length.   
     
     
         18 . The reinforced conduit of  claim 1 , comprising:
 an inner layer comprising the extruded conduit;   a middle layer contacting the inner layer, the middle layer comprising the metal reinforcement, wherein the metal reinforcement comprises a metal sleeve or pipe, a wound layer of metal fibers, a metal tape, or a combination thereof; and   an outer layer contacting the middle layer, the outer layer comprising another one of the extruded conduit.   
     
     
         19 . The reinforced conduit of  claim 1 , comprising:
 an inner layer comprising the extruded conduit; and   an outer layer contacting the inner layer, the outer layer comprising the metal reinforcement, the metal reinforcement comprising a metal pipe or metal sleeve.   
     
     
         20 . The reinforced conduit of  claim 1 , comprising:
 an inner layer comprising the metal reinforcement, the metal reinforcement comprising a metal pipe or metal sleeve; and   an outer layer contacting the inner layer, the outer layer comprising the extruded conduit.