Peroxide cured styrene butadiene for brake hose
OwnerLaDonna J. Jerrellinventor
Life of this patent
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Abstract
A multilayer brake hose is described. The hose includes an elastomeric inner layer or core tube, and a first reinforcing layer disposed around and bonded to the inner layer. The hose also includes an elastomeric intermediate layer overlying the first reinforcing layer, a second reinforcing layer overlying the elastomeric intermediate layer, and an elastomeric protective cover layer disposed over the second reinforcing layer. The inner layer includes styrene butadiene rubber (SBR) cured with a peroxide. The peroxide-cured SBR has compression set characteristics similar to sulfur-cured SBR, while exhibiting better adhesion to wound or braided fibers used in the reinforcing layers.
Claims20
A multilayer hose comprising:
- an elastomeric core tube comprised of a peroxide-cured styrene butadiene rubber, the elastomeric core tube having an outer surface;
- a first reinforcing layer bonded to the outer surface of the elastomeric core tube;
- an elastomeric intermediate layer overlying the first reinforcing layer;
- a second reinforcing layer overlying the elastomeric intermediate layer;
- and
- an elastomeric outer layer overlying the second reinforcing layer.
A multilayer hose comprising:
- an elastomeric core tube comprising a peroxide-cured styrene butadiene rubber;
- a braided reinforcing layer disposed on and bonded to the elastomeric core tube;
- and
- an elastomeric outer layer overlying the braided reinforcing layer.
10 The multilayer hose of claim 6, wherein the hose further comprises an elastomeric intermediate layer disposed on the braided reinforcing layer.
The multilayer hose of claim 10, wherein the hose further comprises a second braided reinforcing layer disposed on the elastomeric intermediate layer.
A multilayer hose comprising:
- an elastomeric core tube comprising styrene butadiene rubber, the styrene butadiene rubber comprising from about thirty to about fifty percent by weight of the core tube and being cured with a peroxide;
- a first reinforcing layer bonded to an outer surface of the elastomeric core tube;
- an elastomeric intermediate layer overlying the first reinforcing layer;
- a second reinforcing layer overlying the elastomeric intermediate layer;
- and
- an elastomeric outer layer overlying the second reinforcing layer.
13 The multilayer hose of claim 12, wherein the elastomeric core tube comprises from about thirty-five to about fifty percent by weight of one or more particulate fillers.
A multilayer hose comprising:
- an elastomeric core tube comprising a peroxide-cured styrene butadiene rubber, the elastomeric core tube having an outer surface;
- a first reinforcing layer bonded to the outer surface of the elastomeric core tube;
- an elastomeric intermediate layer overlying the first reinforcing layer;
- a second reinforcing layer overlying the elastomeric intermediate layer;
- and
- an outer layer overlying the second reinforcing layer;
- wherein the elastomeric core tube comprises from about thirty to about fifty percent by weight of styrene butadiene rubber, from about thirty-five to about fifty percent by weight of one or more particulate fillers, and from about 0.5 to about 18.5 percent by weight of one or more processing aids.
Dependencies are inferred from the claim text.