Laminate
US-11780212-B2 · Oct 10, 2023 · US
Layered body and extrusion-molded article
US12459181B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12459181-B2 |
| Application number | US-202217849530-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 24, 2022 |
| Priority date | Nov 5, 2019 |
| Publication date | Nov 4, 2025 |
| Grant date | Nov 4, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A tube or a hose including a fluoroelastomer and a polytetrafluoroethylene, the tube or the hose being an extruded article. The polytetrafluoroethylene is dispersed in a state of single particles in the extruded article, or the polytetrafluoroethylene has a specific surface area of less than 8 m 2 /g. Also disclosed is an extruded laminate including a fluoroelastomer layer formed form the tube or hose and a polymer layer.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A tube or a hose comprising a fluoroelastomer and a polytetrafluoroethylene, the tube or the hose being an extruded article obtained by extruding a fluoroelastomer composition to provide an extrudate and crosslinking the extrudate, wherein the polytetrafluoroethylene is dispersed in a state of single particles in the extruded article, and a content of the polytetrafluoroethylene in the extruded article is 10 to 45 parts by mass based on 100 parts by mass of the fluoroelastomer, the fluoroelastomer composition containing the fluoroelastomer, the polytetrafluoroethylene, a basic polyfunctional compound, a peroxide crosslinking agent, and a crosslinking aid. 2 . The tube or the hose according to claim 1 , wherein the polytetrafluoroethylene has a melt viscosity at 380° C. of 1× 10 1 to 7× 10 5 Pa·s. 3 . An extruded laminate comprising a fluoroelastomer layer formed from the tube or the hose according to claim 1 and a polymer layer. 4 . The tube or the hose according to claim 1 , wherein the fluoroelastomer composition further contains at least one selected from the group consisting of a phosphorus compound and silica. 5 . The tube or the hose according to claim 1 , wherein the fluoroelastomer composition further contains carbon black. 6 . A tube or a hose comprising a fluoroelastomer and a polytetrafluoroethylene, the tube or the hose being an extruded article obtained by extruding a fluoroelastomer composition to provide an extrudate and crosslinking the extrudate, wherein the polytetrafluoroethylene has a specific surface area of less than 8 m 2 /g, and a content of the polytetrafluoroethylene in the extruded article is 10 to 45 parts by mass based on 100 parts by mass of the fluoroelastomer, the fluoroelastomer composition containing the fluoroelastomer, the polytetrafluoroethylene, a basic polyfunctional compound, a peroxide crosslinking agent, and a crosslinking aid. 7 . The tube or the hose according to claim 6 , wherein the polytetrafluoroethylene has a melt viscosity at 380° C. of 1× 10 1 to 7× 10 5 Pa·s. 8 . An extruded laminate comprising a fluoroelastomer layer formed from the tube or the hose according to claim 6 and a polymer layer. 9 . The tube or the hose according to claim 6 , wherein the fluoroelastomer composition further contains at least one selected from the group consisting of a phosphorus compound and silica. 10 . The tube or the hose according to claim 6 , wherein the fluoroelastomer composition further contains carbon black.
Assignees
Inventors
Classifications
PTFE, i.e. polytetrafluoroethylene · CPC title
of synthetic resin · CPC title
PTFE, i.e. polytetrafluoroethylene {, e.g. ePTFE, i.e. expanded polytetrafluoroethylene} · CPC title
characterised by the choice of material · CPC title
Vinyl halide, e.g. PVC, PVDC, PVF or PVDF (co)polymers · CPC title
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Frequently asked questions
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- What does patent US12459181B2 cover?
- A tube or a hose including a fluoroelastomer and a polytetrafluoroethylene, the tube or the hose being an extruded article. The polytetrafluoroethylene is dispersed in a state of single particles in the extruded article, or the polytetrafluoroethylene has a specific surface area of less than 8 m 2 /g. Also disclosed is an extruded laminate including a fluoroelastomer layer formed form the tube …
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B32B25/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 04 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).