Chemical and gas-resistant, high-pressure, large-bore bonded flexible rubber pipe and method for producing the same
First Claim
1. A high-pressure, large-bore bonded flexible rubber pipe resistant to aggressive chemicals and gases, the flexible pipe comprising a liner made of poly(vinylidene-fluoride) homopolymer or copolymer, with at least 80 mole % of the monomeric units being vinylidene-fluoride for the copolymer and a hydrogenated nitrile rubber-based rubber compound vulcanized with peroxide, the compound having a Mooney 05, 150°
- C. scorch time of at least 10 minutes, and the compound directly bonded to the poly(vinylidene-fluoride) liner.
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Accused Products
Abstract
A high-pressure, large-bore bonded flexible rubber pipe resistant to aggressive chemicals and gases, particularly for conveying gas or oil, the flexible pipe having a liner made of poly(vinylidene-fluoride) homopolymer or copolymer wherein a hydrogenated nitrile rubber-based, peroxide-vulcanized rubber compound 2 is bonded to the poly(vinylidene-fluoride) liner, which has a Mooney 05, 150° C. scorch time of at least 10 minutes. Further, a method for manufacturing such hoses, the method including vulcanization performed at a temperature of at least 160° C.
6 Citations
9 Claims
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1. A high-pressure, large-bore bonded flexible rubber pipe resistant to aggressive chemicals and gases, the flexible pipe comprising a liner made of poly(vinylidene-fluoride) homopolymer or copolymer, with at least 80 mole % of the monomeric units being vinylidene-fluoride for the copolymer and a hydrogenated nitrile rubber-based rubber compound vulcanized with peroxide, the compound having a Mooney 05, 150°
- C. scorch time of at least 10 minutes, and the compound directly bonded to the poly(vinylidene-fluoride) liner.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification