Sealant material

Patent metadata

Field	Value
Publication number	US-11066587-B2
Application number	US-201715643796-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Jan 16, 2015
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

Use of a sealing material which is a multifilament or spun yarn coated with a joint sealing composition to seal a joint in a pipe system in which system a fluid having corrosion inhibitors such as diammonium dimolybdate or benzotriazole; and/or sludge removers; and/or an alcohol such as propane diol, or ethylene glycol; and/or a hydrocarbon such as diesel, including biodiesel, fuel oil, or hydraulic oil; and/or steam at a temperature of at least 180° C. and a pressure of at least 10 bar (1000 kPa); is to be passed through the sealed joint. It is surprising that the sealing materials of the invention can maintain a sealed joint despite exposure to such materials.

First claim

The invention claimed is:

1. A process for using a sealing material consisting of a plurality of yarns coated with a non-curable joint sealing composition to seal a joint in a pipe system, comprising the steps of:
applying the sealing material to a surface of the joint and mating the sealing material-applied surface of the joint with another part to form the pipe system, and thereafter passing through the pipe system a fluid, wherein the fluid comprises at least two of:
(a) corrosion inhibitor selected from the group consisting of diammonium dimolybdate and benzotriazole;
(b) sludge remover;
(c) alcohol selected from the group consisting of propane diol and ethylene glycol;
(d) hydrocarbon selected from the group consisting of diesel, fuel oil and hydraulic oil; or
(e) steam at a temperature of at least 180° C. and a pressure of at least 10 bar (1000 kPa),

wherein the plurality of yarns is constructed from polyamide, and
wherein the non-curable joint sealing composition comprises silicone oil and a filler selected from the group consisting of a mineral filler, a powdered polymer filler and chopped fibre filler material.

2. The process according to claim 1 wherein the fluid is at an elevated temperature.

3. The process according to claim 2 wherein the elevated temperature is at least about 150° C.

4. The process of claim 1 wherein the yarn is a multifilament yarn or a spun yarn.

5. A process for using a plurality of yarns together with a non-curable joint sealing composition in the manufacture of a sealing material for sealing a joint in a pipe system, comprising the steps of:
applying the sealing material to a joint and mating the sealing material-applied joint with another part to form a pipe system, and thereafter passing through the pipe system a fluid, wherein the fluid comprises at least two of:
(a) corrosion inhibitor selected from the group consisting of diammonium dimolybdate and benzotriazole;
(b) sludge remover;
(c) alcohol selected from the group consisting of propane diol and ethylene glycol;
(d) hydrocarbon selected from the group consisting of diesel, fuel oil and hydraulic oil; or
(e) steam at a temperature of at least 180° C. and a pressure of at least 10 bar (1000 kPa),

wherein the plurality of yarns are constructed from polyamide, and
wherein the non-curable joint sealing composition comprises silicone oil and a filler selected from the group consisting of a mineral filler, a powdered polymer filler and chopped fibre filler material.

6. A system through which a fluid passes, wherein the system comprises a pipe system in which there is at least one joint, the joint being sealed with a sealing material comprising a plurality of yarns coated with a non-curable joint sealing composition, and a fluid passing through the sealed joint, the fluid comprising at least two of:
(a) corrosion inhibitor selected from the group consisting of diammonium dimolybdate and benzotriazole;
(b) sludge remover;
(c) alcohol selected from the group consisting of propane diol and ethylene glycol;
(d) hydrocarbon selected from the group consisting of diesel, fuel oil and hydraulic oil; or
(e) steam at a temperature of at least 180° C. and a pressure of at least 10 bar (1000 kPa),
wherein the yarn is constructed from polyamide, and
wherein the non-curable joint sealing composition comprises silicone oil and a filler selected from the group consisting of a mineral filler, a powdered polymer filler and chopped fibre filler material.

Assignees

• Henkel IP & Holding GmbH

Inventors

• Prell Anna
• Ledwidge Eadaoin

Classifications

• C09K3/1028 Primary

  Fibres · CPC title

• D06M13/144

  Alcohols; Metal alcoholates (D06M13/11 takes precedence) · CPC title

• C09K3/10

  {Materials in mouldable or extrudable form} for sealing or packing joints or covers (filling pastes C09D5/34) · CPC title

• C09D5/34

  Filling pastes (materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12) · CPC title

• F16L15/04

  with additional sealings · CPC title