# US 4,391,318 A · Composite of rubber and metal reinforcement therefor

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- Number: US 4,391,318 A
- Document ID: US4391318A
- Status: Granted
- Kind: A
- Application number: 06/262,163
- Filed: 1981-05-11
- Granted: 1983-07-05
- Earliest claimed: 1981-05-11
- Assignees: The Goodyear Tire & Rubber Company
- Inventors: Frank S. Maxey, deceased; Syed K. Mowdood
- Web page: https://patentgrep.com/patent/US4391318A

## CPC

- C08J 5/10: characterised by the additives used in the polymer mixture
- C08K 5/3477: Six-membered rings
- B29C 66/721: {Fibre-reinforced materials (B29C66/729 takes precedence)}
- B29C 66/72141: {Fibres of continuous length}
- C08J 2321/00: Characterised by the use of unspecified rubbers
- D07B 1/0666: {the wires being characterised by an anti-corrosive or adhesion promoting coating}
- D07B 2201/2011: comprising metals
- D07B 2201/2013: comprising multiple layers
- D07B 2205/3021: Metals
- D07B 2205/3089: Brass, i.e. copper (Cu) and zinc (Zn) alloys
- D07B 2205/3092: Zinc (Zn) and tin (Sn) alloys
- Y10S 156/91: Bonding tire cord and elastomer: improved adhesive system
- Y10T 428/12562: Elastomer
- Y10T 428/294: including metal or compound thereof [excluding glass, ceramic and asbestos]
- Y10T 428/31707: Next to natural rubber
- Y10T 428/31743: Next to addition polymer from unsaturated monomer[s]
- Y10T 428/3175: Next to addition polymer from unsaturated monomer[s]
- Y10T 428/31826: Of natural rubber
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- D07B: ROPES OR CABLES IN GENERAL (joining ropes or cables to one another or to other objects B65H69/00, F16G11/00; {mountaineering ropes A63B29/02}; mechanical finishing or dressing of ropes D02J; {braiding D04C}; decorative ropes or cords D04D; suspension cables for bridges E01D19/16; specially adapted for driving, or for being driven by, pulleys or other gearing elements F16G9/00; electric cables or joints insofar as electrical aspects are essential H01B, H01R)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Composite of rubber and metal reinforcement where the rubber contains a cyanuric acid derivative and optionally a borate. Cured composite is useful as component for rubber tires, industrial belts and hose.

## Claims

### Claim 1

A composite of rubber composition containing zinc oxide, carbon black, optionally and/or mineral fillers, cure accelerator(s), fatty acid and/or metal salt thereof, and filament reinforcement therefor where said filament is selected from at least one of steel, organic and inorganic filaments, optionally as a multiple of filaments cabled together to form a cord, characterized in that (i) when said filament or cord thereof is steel, said rubber composition contains (A) about 0.05 to 8 phr of a compound selected from at least one of diallyl cyanurate, triallyl cyanurate, tris(2-hydroxyethyl) cyanurate, triphenyl cyanurate, diallyl isocyanurate, triallyl isocyanurate, and 4-ketobenz triazine and, optionally, (B) about 0.05 to about 10 phr of at least one borate as the product of (i) a metal selected from Groups IA, IIA, IIB, IVA, IVB, and VIII of the Periodic Table of the Elements, and (ii) an acid selected from the group consisting of boric, orthoboric, metaboric or polyboric acid; and when said filament or cord thereof is not steel the rubber composition contains both the (A) compound and the (B) borate.

### Claim 2 (depends on 1)

The composite of claim 1 where said reinforcement is composed of at least one steel filament or cord of cabled filaments having a microscopically porous metal coating thereon composed primarily of brass and/or zinc.

### Claim 3 (depends on 1)

The composite of claim 1 where said rubber composition contains (A) a compound selected from at least one of diallyl cyanurate, triallyl cyanurate, tris(2-hydroxyethyl) cyanurate, triphenyl cyanurate, diallyl isocyanurate, triallyl isocyanurate, and 4-ketobenz triazine and (B) a borate selected from at least one of sodium, potassium, lithium, barium and calcium salt of boric, orthoboric, metaboric or polyboric acid.

### Claim 4 (depends on 1)

The composite of claim 1 where said filament is steel and has an outer, thin, practically monomolecular microporous metal coating thereon selected from at least one of zirconium, cerium, lanthanum, nickel, cobalt, tin, titanium, zinc, copper, brass and bronze plated on the steel wire.

### Claim 5 (depends on 1)

The composite of claim 1 where the said filament reinforcement is steel and is brass coated with the brass coat itself having an outer coat of zinc.

### Claim 6 (depends on 4)

The composite of claim 4 where said filament is carbon steel and coated with brass where the major component of said brass is alpha brass.

### Claim 7 (depends on 3)

The composite of claim 3 where said wire filament has a protective overcoat of benzotriazole.

### Claim 8 (depends on 2, 3)

The composite of claim 2 or 3 where said rubber is selected from at least one of natural rubber, synthetic cis-1,4-polyisoprene, polychloroprene, cyclene rubbers, rubbery polymers derived from 1,3-butadiene, butadiene/styrene copolymers, isoprene/styrene copolymers, epichlorohydrin homo and copolymers, butadiene/acrylonitrile copolymers, EPDM rubbers, butyl rubbers, halobutyl rubbers, norbornene rubbers, thiokol rubbers, and blends thereof.

### Claim 9 (depends on 1)

A pneumatic or semi-pneumatic rubber tire having a generally toroidal shape and comprised of a general construction containing a tread, spaced inextensible beads and sidewalls connecting said beads and tread and with a supporting carcass therefor, where said carcass is a filament cord-reinforced sulfur-cured rubber composite of claim 1 where said filament is steel.

### Claim 10 (depends on 9)

The rubber tire of claim 9 where said cord is composed of about 2 to about 50 cabled metal-plated steel filaments, said filament composed of steel filament having a microscopically porous metal coating thereon composed primarily of brass and/or zinc.

### Claim 11 (depends on 9)

The tire of claim 9 where said steel filament has an outer, thin, practically monomolecular microporous metal coating thereof selected from at least one of zirconium, cerium, lanthanum, nickel, cobalt, tin, titanium, zinc, copper, brass and bronze plated on the steel wire.

### Claim 12 (depends on 9)

The tire of claim 9 where said steel filaments have an outer coating of brass and said brass itself has an outer coat of zinc.

### Claim 13 (depends on 10, 11)

The tire of claim 10 or 11 where said steel is carbon steel and the major component of said brass is alpha brass.

### Claim 14 (depends on 10, 11)

The tire of claims 10 or 11 where said wire filament has a protective overcoat of benzotriazole.

### Claim 15 (depends on 9, 10)

The tire of claim 9 or 10 where said rubber is selected from at least one of natural rubber, synthetic cis-1,4-polyisoprene, polychloroprene, cyclene rubbers, rubbery polymers derived from 1,3-butadiene, butadiene/styrene copolymers, isoprene/styrene copolymers, epichlorohydrin homo and copolymers, butadiene/acrylonitrile copolymers, EPDM rubbers, butyl rubbers, halobutyl rubbers, norbornene rubber, thiokol rubbers and blends thereof.

### Claim 16 (depends on 9, 10)

The tire of claim 9 or 10 where the borate of (B) is selected from at least one of zinc borate and sodium metaborate.

### Claim 17 (depends on 1, 2)

An industrial article of manufacture selected from at least one of industrial conveyor belt, power transmission belt and hose which are, at least in part, constructed of the metal cord-reinforced sulfur-vulcanized rubber composite of claim 1 or 2.