US 11,686,410 B2
Rubber composition for a cover layer of a hydraulic hose, hydraulic hose, and method for producing the hydraulic hose
Recep Muco, Corlu (TR); Muslum Eren, Cerkezkoy (TR); Volkan Karayazi, Cerkezkoy (TR); Tekin Coskun, Cerkezkoy (TR); and Ozgur Caliskan, Cerkezkoy (TR)
Assigned to DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S, Nordborg (DK)
Appl. No. 16/955,807
Filed by Eaton Intelligent Power Limited, Dublin (IE)
PCT Filed Dec. 20, 2018, PCT No. PCT/EP2018/086435
§ 371(c)(1), (2) Date Jun. 19, 2020,
PCT Pub. No. WO2019/122264, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 1721787 (GB), filed on Dec. 22, 2017.
Prior Publication US 2020/0340603 A1, Oct. 29, 2020
Int. Cl. F16L 11/08 (2006.01); B61C 17/00 (2006.01); C08L 31/04 (2006.01); F16L 11/12 (2006.01); F16L 59/14 (2006.01); F16L 59/153 (2006.01)
CPC F16L 11/088 (2013.01) [B61C 17/00 (2013.01); C08L 31/04 (2013.01); F16L 11/081 (2013.01); F16L 11/12 (2013.01); F16L 59/143 (2013.01); F16L 59/153 (2013.01); C08L 2201/08 (2013.01); C08L 2205/025 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rubber composition for a cover layer of a hydraulic hose, comprising:
ethylene vinyl acetate copolymer (EVA); and
ethylene-propylene-diene terpolymer (EPDM) and additives;
wherein the EPDM comprises a content of ethylene of 51 wt %, a content of propylene of 44.7 wt %, and a content of diene of 4.3 wt %, and
wherein the additives comprise carbon black with a content of around 15 phr, silica with a content of around 20 phr, di-octyl adipate with a content of around 18 phr, aluminium hydroxide with a content of around 124 phr, magnesium hydroxide with a content of around 30 phr, and other chemicals with a content of around 20 phr, and
wherein the other chemicals comprise zinc oxide, peroxide curative, antioxidant, coagents and processing aids.