Patent US3928291A successfully refreshed from Google Patents.
US3928291A
Expired / Lapsed
US
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Tire treads and their production
Assignee: Bridgestone Firestone Inc
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Filing: 1974-09-12
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Granted: 1975-12-23
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Expires: 1994-09-12
Abstract
Abstract In the production of vehicle tires, a self-vulcanizing tread composition which includes a reinforcing agent is applied to the tread portion of a tire mold and a tire body is positioned in the mold against this tread. The tread is prepared from an elastomeric polymer selected from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a conjugated diene and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a conjugated diene and a vinyl nitrile monomer, (d) polyhydroxy polymers from hydrocarbon monoolefins, (e) polyhydroxy polyethers, and (f) polyhydroxy polyesters, by reacting the same with an aliphatic or aromatic di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-XC:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety. The resulting polymer may be subjected to a supplemental cure with sulfur, peroxide or polyol.
Inventors
- 👤 Jr Joseph C Sanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:38
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; B; B60; B60C; B60C1/00; B60C1/0016; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/38; C08G63/52; C08G63/56; C08G63/66
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A TREAD OF A PNEUMATIC TIRE WHICH COMPRISES THE CHAINEXTENDIDNG REACTION PRODUCT OF A CHAIN-EXTENDNG DI(CARBONYL HALIDE) OF THE FORMULA HAL-O:C-C:O-HAL OR HAL-O:CX-C:O-HAL IN WHICH HAL IS CHLORINE OR BROMINE AND X IS AN ALIPHATIC OR AROMATIC HYDROCARBON MOIETY, AND A POLYMER FROM THE CLASS CONSISTING OF (A) POLYHYDROXY HOMOPOLYMERS AND COPOLYMERS OF CONJUGATED DIENES WHICH CONTAIN 4 TO 6 CARBON ATOMS, (B) POLYHYDROXY COPOLYMERS OF SUCH A DIENE AND AN AROMATIC VINYL MONOMER, (C) POLYHYDROXY COPOLHMERS OF SUCH A DIENE AND AN ALIPHATIC VINYL NITRILE MONOMER, (D) POLYHYDROXY POLYISOBUTYLENE ETHYLENE-PROPYLENE POLYESMER, (E) POLYHYDROXY POLYETHERS AND (F) POLYHYDROXY POLYESTERS, WHICH POLYMERS CONTAIN 2 OR 3 HYDROXY GROUPS WITH SUFFICIENT REINFORCING PIGMENT FOR A TIRE TREAD.
Claim 2
Dependent Claim
115 words
A TREAD OF A PNEUMATIC TIRE WHICH COMPRISES THE CHAINEXTENDIDNG REACTION PRODUCT OF A CHAIN-EXTENDNG DI(CARBONYL HALIDE) OF THE FORMULA HAL-O:C-C:O-HAL OR HAL-O:CX-C:O-HAL IN WHICH HAL IS CHLORINE OR BROMINE AND X IS AN ALIPHATIC OR AROMATIC HYDROCARBON MOIETY, AND A POLYMER FROM THE CLASS CONSISTING OF (A) POLYHYDROXY HOMOPOLYMERS AND COPOLYMERS OF CONJUGATED DIENES WHICH CONTAIN 4 TO 6 CARBON ATOMS, (B) POLYHYDROXY COPOLYMERS OF SUCH A DIENE AND AN AROMATIC VINYL MONOMER, (C) POLYHYDROXY COPOLHMERS OF SUCH A DIENE AND AN ALIPHATIC VINYL NITRILE MONOMER, (D) POLYHYDROXY POLYISOBUTYLENE ETHYLENE-PROPYLENE POLYESMER, (E) POLYHYDROXY POLYETHERS AND (F) POLYHYDROXY POLYESTERS, WHICH POLYMERS CONTAIN 2 OR 3 HYDROXY GROUPS WITH SUFFICIENT REINFORCING PIGMENT FOR A TIRE TREAD.
Claim 3
Dependent Claim
117 words
A tread of a pneumatic tire which comprises a sulfur-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a dieNe and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 4
Dependent Claim
117 words
A tread of a pneumatic tire which comprises a sulfur-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a dieNe and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 5
Dependent Claim
117 words
A tread of a pneumatic tire which comprises a peroxide-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a diene and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 6
Dependent Claim
117 words
A tread of a pneumatic tire which comprises a peroxide-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a diene and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 7
Dependent Claim
117 words
A tread of a pneumatic tire which comprises an aliphatic-triol-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a diene and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 8
Dependent Claim
117 words
A tread of a pneumatic tire which comprises an aliphatic-triol-reacted chain-extended reaction product of a chain-extending di(carbonyl halide) of the formula Hal-O:C-C:O-Hal or Hal-O:C-X-C:O-Hal in which Hal is chlorine or bromine and X is an aliphatic or aromatic hydrocarbon moiety, and a polymer from the class consisting of (a) polyhydroxy homopolymers and copolymers of conjugated dienes which contain 4 to 6 carbon atoms, (b) polyhydroxy copolymers of such a diene and an aromatic vinyl monomer, (c) polyhydroxy copolymers of such a diene and an aliphatic vinyl nitrile monomer, (d) polyhydroxy polyisobutylene and ethylene-propylene copolymer, (e) polyhydroxy polyethers and (f) polyhydroxy polyesters, which polymers contain 2 or 3 hydroxy groups with sufficient reinforcing pigment for a tire tread.
Claim 9
Dependent Claim
12 words
The tread of claim 1 in which the polymer is polyhydroxy polybutadiene.
Claim 10
Dependent Claim
12 words
The tread of claim 1 in which the polymer is polyhydroxy butadiene-styrene.
Claim 11
Dependent Claim
13 words
The tread of claim 1 in which the polymer is a polyhydroxy ether.
Claim 12
Dependent Claim
12 words
The tread of claim 5 which has been auxiliarly cured with sulfur.
Claim 13
Dependent Claim
12 words
The tread of claim 6 which has been auxiliarly cured with perotides.
Claim 14
Dependent Claim
14 words
The tread of claim 7 which has been auxiliarly cured with an aliphatic triol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |