US5686530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire tread compound
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1997-01-13
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Granted: 1997-11-11
•
Expires: 2017-01-13
Abstract
Abstract The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100° C. which is within the range of about 50 to about 140, wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order, and wherein said isoprene-butadiene diblock polymer does not contain any blocks which are derived solely from isoprene; and (b) a second rubber selected from the group consisting of high vinyl polybutadiene rubber, styrene-isoprene-butadiene rubber, solution styrene-butadiene rubber and emulsion styrene-butadiene rubber.
Inventors
- 👤 Adel Farhan Halasa
- 👤 David John Zanzig
- 👤 Wen-Liang Hsu
- 👤 Paul Harry Sandstrom
- 👤 Laurie Elizabeth Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:29
CPC Classifications
C; C08; C08L; C08L21/00; C08L53/00; B; B60; B60C; B60C1/00; B60C1/0016; C08F; C08F297/00; C08F297/02; C08F297/04; C08K; C08K3/00; C08K3/34; C08K3/36; C08L9/00; C08L9/06; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/86
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
208 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 30 to about 80 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a Mooney ML-4 viscosity at 100° C. which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 20 to about 70 parts of a second rubber selected from the group consisting of high vinyl polybutadiene rubber, medium vinyl polybutadiene rubber, and styrene-isoprene-butadiene rubber.
Claim 2
Dependent Claim
208 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 30 to about 80 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a Mooney ML-4 viscosity at 100° C. which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 20 to about 70 parts of a second rubber selected from the group consisting of high vinyl polybutadiene rubber, medium vinyl polybutadiene rubber, and styrene-isoprene-butadiene rubber.
Claim 3
Dependent Claim
228 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 30 to about 80 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has a first glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a second glass transition temperature which is within the range of about -50° C. to about 0° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 at 100° C. viscosity which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 20 to about 70 parts of a second rubber selected from the group consisting of high vinyl polybutadiene rubber and styrene-isoprene-butadiene rubber.
Claim 4
Dependent Claim
228 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 30 to about 80 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has a first glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a second glass transition temperature which is within the range of about -50° C. to about 0° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 at 100° C. viscosity which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 20 to about 70 parts of a second rubber selected from the group consisting of high vinyl polybutadiene rubber and styrene-isoprene-butadiene rubber.
Claim 5
Dependent Claim
204 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 50 to about 75 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100° C. which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 25 to about 50 parts of a second rubber selected from the group consisting of emulsion styrene-butadiene rubber and solution styrene-butadiene rubber.
Claim 6
Dependent Claim
204 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 50 to about 75 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100° C. which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 25 to about 50 parts of a second rubber selected from the group consisting of emulsion styrene-butadiene rubber and solution styrene-butadiene rubber.
Claim 7
Dependent Claim
228 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 50 to about 75 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has a first glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a second glass transition temperature which is within the range of about -50° C. to about 0° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 at 100° C. viscosity which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 25 to about 50 parts of a second rubber selected from the group consisting of emulsion styrene-butadiene rubber and solution styrene-butadiene rubber.
Claim 8
Dependent Claim
228 words
A pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of, based on 100 parts by weight of rubber, (a) from about 50 to about 75 parts of an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has a first glass transition temperature which is within the range of about -100° C. to about -70° C., wherein said isoprene-butadiene diblock rubber has a second glass transition temperature which is within the range of about -50° C. to about 0° C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 at 100° C. viscosity which is within the range of about 50 to about 140, wherein said isoprene-butadiene diblock rubber does not contain any blocks which are derived solely from isoprene, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) from about 25 to about 50 parts of a second rubber selected from the group consisting of emulsion styrene-butadiene rubber and solution styrene-butadiene rubber.
Claim 9
Dependent Claim
33 words
A pneumatic tire as specified in claim 1 wherein the second rubber is high vinyl polybutadiene having a vinyl content which is within the range of about 60 percent to about 80 percent.
Claim 10
Dependent Claim
34 words
A pneumatic tire as specified in claim 1 wherein the second rubber is a styrene-isoprene-butadiene rubber having a glass transition temperature which is within the range of about -40° C. to about -20° C.
Claim 11
Dependent Claim
45 words
A pneumatic tire as specified in claim 5 wherein said tread is comprised of about 50 weight percent to about 70 weight percent of the isoprene-butadiene diblock rubber and from about 30 weight percent to about 50 weight percent of the high vinyl polybutadiene rubber.
Claim 12
Dependent Claim
75 words
A pneumatic tire as specified in claim 7 wherein said isoprene-butadiene diblock rubber has a Mooney viscosity at 100° C. which is within the range of about 80 to about 135; and wherein the butadiene block has a number average molecular weight which is within the range of about 50,000 to about 200,000; and wherein the isoprene-butadiene block has a number average molecular weight which is within the range of about 50,000 to about 200,000.
Claim 13
Dependent Claim
88 words
A pneumatic tire as specified in claim 8 wherein the isoprene-butadiene block in the isoprene-butadiene diblock polymer is comprised of from about 10 weight percent to about 60 weight percent repeat units which are derived from isoprene, and from about 40 weight percent to about 90 weight percent repeat units which are derived from 1,3-butadiene; wherein the ratio of the number average molecular weight of the butadiene block to the number average molecular weight of the isoprene-butadiene block is within the range of about 25/75 to about 75/25.
Claim 14
Dependent Claim
61 words
A pneumatic tire as specified in claim 9 wherein the butadiene block in the isoprene-butadiene diblock polymer has a number average molecular weight which is within the range of about 70,000 to about 150,000; and wherein the isoprene-butadiene block in the isoprene-butadiene diblock polymer has a number average molecular weight which is within the range of about 70,000 to about 150,000.
Claim 15
Dependent Claim
89 words
A pneumatic tire as specified in claim 10 wherein the isoprene-butadiene block in the isoprene-butadiene diblock polymer is comprised of from about 20 weight percent to about 50 weight percent repeat units which are derived from isoprene, and from about 50 weight percent to about 80 weight percent repeat units which are derived from 1,3-butadiene; and wherein the ratio of the number average molecular weight of the butadiene block to the number average molecular weight of the isoprene-butadiene block is within the range of about 35/65 to about 65/35.
Claim 16
Dependent Claim
73 words
A pneumatic tire as specified in claim 11 wherein the isoprene-butadiene block is comprised of from about 30 weight percent to about 45 weight percent repeat units which are derived from isoprene, and from about 55 weight percent to about 70 weight percent repeat units which are derived from 1,3-butadiene; wherein said isoprene-butadiene diblock rubber has a Mooney viscosity at 100° C. which is within the range of about 100 to about 130.
Claim 17
Dependent Claim
45 words
A pneumatic tire as specified in claim 12 wherein said tread is comprised of about 55 weight percent to about 65 weight percent of the isoprene-butadiene diblock rubber and from about 35 weight percent to about 45 weight percent of the high vinyl polybutadiene rubber.
Claim 18
Dependent Claim
35 words
A pneumatic tire as specified in claim 13 wherein said tread is a sulfur-cured rubber composition which is further comprised of carbon black, at least one antidegradant, at least one processing oil and zinc oxide.
Claim 19
Dependent Claim
22 words
A pneumatic tire as specified in claim 13 wherein said tread is a sulfur-cured rubber composition which is further comprised of silica.
Claim 20
Dependent Claim
43 words
A pneumatic tire as specified in claim 6 wherein said tread is comprised of about 50 weight percent to about 70 weight percent of the isoprene-butadiene diblock rubber and from about 30 weight percent to about 50 weight percent of the styrene-isoprene-butadiene rubber.
Claim 21
Dependent Claim
16 words
A pneumatic tire as specified in claim 3 wherein the second rubber is solution styrene-butadiene rubber.
Claim 22
Dependent Claim
43 words
A pneumatic tire as specified in claim 17 wherein the tread is comprised of about 55 weight percent to about 65 weight percent of the isoprene-butadiene diblock rubber and from about 35 weight percent to about 45 weight percent of the styrene-isoprene-butadiene rubber.
Claim 23
Dependent Claim
52 words
A pneumatic tire as specified in claim 4 wherein the second rubber is solution styrene-butadiene rubber; and wherein the tread is comprised of about 55 weight percent to about 65 weight percent of the isoprene-butadiene diblock rubber and from about 35 weight percent to about 45 weight percent of the styrene-isoprene-butadiene rubber.
Claim 24
Dependent Claim
71 words
A pneumatic tire as specified in claim 2 wherein the second rubber is high vinyl polybutadiene having a vinyl content which is within the range of about 60 percent to about 80 percent; and wherein said tread is comprised of about 50 weight percent to about 70 weight percent of the isoprene-butadiene diblock rubber and from about 30 weight percent to about 50 weight percent of the high vinyl polybutadiene rubber.
Claim 25
Dependent Claim
27 words
A pneumatic tire as specified in claim 1 wherein the second rubber is medium vinyl polybutadiene rubber having a vinyl content of 40 percent to 50 percent.
Claim 26
Dependent Claim
22 words
A pneumatic tire as specified in claim 1 wherein said tread is a sulfur-cured rubber composition which is further comprised of silica.
Claim 27
Dependent Claim
29 words
A pneumatic tire as specified in claim 22 wherein the silica is present in an amount which is within the range of about 10 phr to about 250 phr.
Claim 28
Dependent Claim
29 words
A pneumatic tire as specified in claim 22 wherein the silica is present in an amount which is within the range of about 50 phr to about 120 phr.
Claim 29
Dependent Claim
20 words
A pneumatic tire as specified in claim 24 wherein the rubber composition is further comprised of a silica coupling agent.
Claim 30
Dependent Claim
18 words
A pneumatic tire as specified in claim 25 wherein the silica is added by a thermomechanical mixing step.
Claim 31
Dependent Claim
15 words
A pneumatic tire as specified in claim 26 wherein the silica coupling agent is bis-(3-triethoxysilylpropyl)tetrasulfide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-10 | 2001-05-12 | 2001-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-10 | 2005-05-12 | 2005-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-10 | 2009-05-12 | 2009-11-11 | $7700.00 | Window Closed / Lapsed |