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US 2006/0185750 A1Published application
Polymeric pipes and liners suitable for transporting oil and gas materials and made from blends of polyolefins and polyamides
OwnerSteven Mestemacherinventor
Life of this patent
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Abstract
A pipe or liner for use in the oil and gas industry that comprises a melt-mixed bend of polyamide and incompatible polyolefin and a compatibilizing agent where the polyamide exists as a discontinuous phase that is dispersed in a polyolefin matrix. The pipe or liner has enhanced resistance to the permeation of hydrocarbons relative to polyethylene.
Claims19
A pipe or liner suitable for use in transporting substances in oil and gas applications, comprising a melt-mixed blend of:
- (a) at least one polyolefin;
- (b) at least one polyamide incompatible with said at least one polyolefin (a);
- and
- (c) at least one alkylcarboxyl-substituted polyolefinic compatibilizer;
- wherein said polyolefins (a) are in a continuous matrix phase and said polyamides (b) are present in a discontinuous distributed phase in the form of a multitude of thin, substantially parallel, and overlapping layers of material embedded in the continuous phase, and further wherein at least a portion of said compatibilizer (c) is present between said layers and promotes adhesion therebetween.
2 more elements
Dependencies are inferred from the claim text.