Sustainable industrial hose

Patent metadata

Field	Value
Publication number	US-11565494-B2
Application number	US-202117453201-A
Country	US
Kind code	B2
Filing date	Nov 2, 2021
Priority date	Mar 9, 2020
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

Hoses include an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, where the cover layer and/or the inner tube includes a cured composition having a sustainable content and formed from a mixture including EPDM/EPR sustainable polymer and a sulfur or peroxide based curing system. In some cases, the EPDM/EPR sustainable polymer has ethylene monomer derived from one or more renewable sources, such as, ethylene monomer derived from sugar cane. The mixture may further include one or more of recovered carbon black and sustainable oils from renewable sources. The hose embodiments may also include the reinforcement layer formed of fibers from sustainable material. The hose may contain the sustainable content in an amount of up to 75% by weight based upon total hose weight, or even greater than 25% by weight based upon total hose weight.

First claim

What is claimed is:

1. A hose comprising an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, wherein the cover layer comprises a cured composition having a sustainable content and formed from a mixture comprising EPDM/EPR sustainable polymer, silica, calcium carbonate, and a sulfur or peroxide based curing system, wherein the EPDM/EPR sustainable polymer comprises ethylene monomer derived from one or more renewable sources, and wherein silica and calcium carbonate are derived from other renewable sources.

2. The hose according to claim 1 , wherein the silica is derived from waste rice husks, and wherein the calcium carbonate is derived from waste eggshells.

3. The hose according to claim 1 , wherein the EPDM/EPR sustainable polymer comprises ethylene monomer derived from sugar cane.

4. The hose according to claim 1 , wherein the mixture further comprises recovered carbon black.

5. The hose according to claim 1 , wherein the mixture further comprises sustainable oils from renewable sources.

6. The hose according to claim 1 , wherein the reinforcement layer comprises fiber from a sustainable material.

7. The hose according to claim 1 , wherein the sustainable content is an amount of up to 95% by weight based upon total hose weight.

8. The hose according to claim 1 , wherein the sustainable content is an amount of greater than 25% by weight based upon total hose weight.

9. The hose according to claim 8 , wherein the sustainable content is an amount of greater than 50% by weight based upon total hose weight.

10. A hose comprising an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, wherein the inner tube comprises a cured composition having a sustainable content and formed from a mixture comprising EPDM/EPR sustainable polymer, silica, calcium carbonate, and a sulfur based curing system, wherein the EPDM/EPR sustainable polymer comprises ethylene monomer derived from one or more renewable sources, and wherein silica and calcium carbonate are derived from other renewable sources.

11. The hose according to claim 10 , wherein the silica is derived from waste rice husks, and wherein the calcium carbonate is derived from waste eggshells.

12. The hose according to claim 10 , wherein the EPDM/EPR sustainable polymer comprises ethylene monomer derived from sugar cane.

13. The hose according to claim 10 , wherein the mixture further comprises recovered carbon black.

14. The hose according to claim 10 , wherein the mixture further comprises sustainable oils from renewable sources.

15. The hose according to claim 10 , wherein the reinforcement layer comprises fiber from a sustainable material.

16. The hose according to claim 10 , wherein the sustainable content is an amount of up to 95% by weight based upon total hose weight.

17. The hose according to claim 10 , wherein the sustainable content is an amount of greater than 25% by weight based upon total hose weight.

18. The hose according to claim 17 , wherein the sustainable content is an amount of greater than 50% by weight based upon total hose weight.

19. The hose according to claim 10 , wherein the cover layer comprises a cured composition formed from a mixture comprising EPDM/EPR sustainable polymer and a sulfur or peroxide based curing system.

20. A hose comprising an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer;
wherein the inner tube comprises a cured composition having a first sustainable content and formed from a first mixture comprising EPDM/EPR sustainable polymer, silica, calcium carbonate, and a sulfur or peroxide based curing system, wherein the EPDM/EPR sustainable polymer comprises ethylene monomer derived from one or more renewable sources, and wherein silica and calcium carbonate are derived from other renewable sources;
wherein the cover layer comprises a cured composition having a second sustainable content and formed from a second mixture comprising EPDM/EPR sustainable polymer and a sulfur based curing system;
wherein the first mixture and the second mixture each further comprise recovered carbon black and sustainable oils from renewable sources;
wherein the reinforcement layer comprises fiber from a sustainable material; and,
wherein the combined total of the first sustainable content and second sustainable content is an amount of greater than 50% by weight based upon total hose weight.

Assignees

• Contitech Usa Inc

Inventors

• Miller Lance
• Epperson Jeffrey T
• Yu Jenny Zhaoxia
• Augustine Mathew
• Dotson Jeffrey P

Classifications

• B32B2255/26

  Polymeric coating · CPC title

• B32B1/08 Primary

  Tubular products · CPC title

• B32B5/026

  Knitted fabric · CPC title

• B32B2255/02

  on fibrous or filamentary layer · CPC title

• F16L11/085

  comprising one or more braided layers (in combination with layers of a helically wound core or wire F16L11/088) · CPC title