Granted Patent B2

US 10,371,292 · App. 15/322,816 · Granted Aug 6, 2019

Abstract

Claims (41)

1. A hose comprising an outermost layer formed from a composition comprising:

(A) at least one of a silane-grafted ethylene-propylene-diene terpolymer polyolefin and a silicone-modified ethylene-propylene-diene terpolymer; and

(B) an ultra high molecular weight polyethylene powder.

2. The hose of claim 1 , wherein component (A) is a silane-grafted ethylene-propylene-diene terpolymer.

3. The hose of claim 1 , wherein component (A) is a silicone-modified ethylene-propylene-diene terpolymer.

4. The hose of claim 1 , further comprising a tube and a reinforcement layer circumferentially surrounding the tube; wherein the outermost layer is a cover layer circumferentially surrounding the reinforcement layer.

5. The hose of claim 4 , wherein the hose consists of the tube, the reinforcement layer, and the cover layer.

6. The hose of claim 5 , wherein the cover layer has a thickness of from about 0.5 mm to about 6.0 mm.

7. The hose of claim 1 , further comprising a tube, a reinforcement layer circumferentially surrounding the tube, and a cover layer circumferentially surrounding the reinforcement layer; wherein the outermost layer is an overcoat layer circumferentially surrounding the cover layer.

8. The hose of claim 7 , wherein the hose consists of the tube, the reinforcement layer, the cover layer, and the overcoat layer.

9. The hose of claim 7 , wherein the overcoat layer has a thickness of from about 0.2 mm to about 2.0 mm.

10. The hose of claim 7 , wherein the overcoat layer circumferentially surrounds the entirety of the cover layer.

11. The hose of claim 1 , wherein the composition comprises from about 5 to about 95 phr of component (A) and from about 5 to about 60 phr of component (B).

12. The hose of claim 1 , wherein component (A) has an average particle size in the range of from about 10 μm to about 100 μm.

13. The hose of claim 1 , further comprising a textile reinforcement layer.

14. The hose of claim 13 , wherein the textile reinforcement layer is a yarn.

15. The hose of claim 12 , wherein the yarn comprises a polyamide, a polyester, or a polyaramid.

16. An automotive heating and cooling system comprising: a hose; and a rigid component in contact with the hose;

wherein the hose comprises an outermost layer in contact with the rigid component;

and

wherein the outermost layer is formed from a composition that comprises (A) at least one of a silane-grafted ethylene-propylene-diene terpolymer and a silicone-modified ethylene-propylene-diene terpolymer and (B) an ultra high molecular weight polyethylene powder.

17. An automotive transmission system comprising: a hose; and

a rigid component in contact with the hose;

wherein the hose comprises an outermost layer in contact with the rigid component;

and

wherein the outermost layer is formed from a composition that comprises (A) at least one of a silane-grafted ethylene-propylene-diene terpolymer and a silicone-modified ethylene-propylene-diene terpolymer and (B) at least one of treated short aramid fibers, a polyamide powder, and an ultra high molecular weight polyethylene powder.

18. The hose of claim 1 , wherein the fibers are selected from the group consisting of aramid fibers, nylon fibers, glass fibers, and carbon fibers.

19. The hose of claim 1 , wherein, the composition further comprises:

(C) at least one heat-resistant polymer.

20. The hose of claim 1 , wherein component (A) comprises a silane-grafted polyolefin and a silicone-modified polyolefin.

21. A hose comprising an outermost layer formed from a composition comprising:

(A) at least one of EPR, EPDM, a silane-grafted polyolefin and a silicone-modified polyolefin; and

(B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers;

wherein the composition comprises from about 5 to about 95 phr of component (A) and from about 5 to about 60 phr of component (B).

22. A hose comprising an outermost layer formed from a composition comprising:

(A) at least one of a silane-grafted polyolefin and a silicone-modified polyolefin;

(B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers; and

(C) at least one heat-resistant polymer selected from the group consisting of EPM and EPD.

23. A hose comprising an outermost layer formed from a composition comprising:

(A) a silane-grafted polyolefin and a silicone-modified polyolefin; and

(B) at least one of an ultra high molecular weight polyethylene powder, a polyamide powder, and fibers.

Assignments (10)