Patent US4396053A successfully refreshed from Google Patents.
US4396053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire including a curable, storage-stable and solventless single component sealant composition
Assignee: Bridgestone Firestone Inc
•
Filing: 1981-04-17
•
Granted: 1983-08-02
•
Expires: 2001-04-17
Abstract
Abstract A curable, storage-stable and solventless single component sealant for pneumatic tires having as its essential sealant functioning components a liquid low molecular weight hydroxy terminated polybutadiene diol, an antioxidant, a polymeric isocyanate, and, a polyurethane catalyst; this sealant can be blended with a sealant optimizing amount of a masterbatch.
Inventors
- 👤 James A. Davis
- 👤 Russell W. Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:55
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; B; B29; B29C; B29C73/00; B29C73/16; B29C73/163; B29D; B29D30/00; B29D30/06; B29D30/0681; B29D30/0685; B29D2030/0686; B29D2030/0697; B29D2030/0698; B29L; B29L2030/00; C08G2380/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10666; Y10T152/10675; Y10T152/10684
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
204 words
A pneumatic tire having a sealant functioning amount of a cured sealant composition contiguous to the inner surface of the inner liner of said tire, said sealant being a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant functioning components from about 60 to about 100 parts of a liquid low molecular weight hydroxy terminated polybutadiene diol, from about 1/2 to about 5 parts of an antioxidant, from about 4 to about 7 parts of an polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and, from about 0.5 to about 2.5 parts of a polyurethane catalyst blended with a sealant optimizing amount of a masterbatch having as its essential components: a. from about 100 to about 600 parts of a rubber process oil; b. from about 25 to about 200 parts of a low molecular weight rubber; c. from about 5 to about 50 parts of a tackifier; d. from about 1 to about 15 parts of a butyl rubber curing resin; e. from about 0.5 to about 5.0 parts of a nonvolatile antioxidant; and f. from about 5 to about 50 parts of finely ground bituminous coal dust.
Claim 2
Dependent Claim
204 words
A pneumatic tire having a sealant functioning amount of a cured sealant composition contiguous to the inner surface of the inner liner of said tire, said sealant being a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant functioning components from about 60 to about 100 parts of a liquid low molecular weight hydroxy terminated polybutadiene diol, from about 1/2 to about 5 parts of an antioxidant, from about 4 to about 7 parts of an polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and, from about 0.5 to about 2.5 parts of a polyurethane catalyst blended with a sealant optimizing amount of a masterbatch having as its essential components: a. from about 100 to about 600 parts of a rubber process oil; b. from about 25 to about 200 parts of a low molecular weight rubber; c. from about 5 to about 50 parts of a tackifier; d. from about 1 to about 15 parts of a butyl rubber curing resin; e. from about 0.5 to about 5.0 parts of a nonvolatile antioxidant; and f. from about 5 to about 50 parts of finely ground bituminous coal dust.
Claim 3
Dependent Claim
164 words
A pneumatic tire having a sealant functioning amount of a cured sealant position contiguous to the inner surface of the inner liner of said tire, said sealant being a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant components about 80 parts of a liquid low molecular weight diol, about 0.8 part of an antioxidant, about 5.65 parts of a polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and, about 2 parts of a polyurethane catalyst blended with a sealant optimizing amount of a masterbatch having as its essential components: a. about 345 parts of a rubber process oil; b. about 115 parts of a low molecular weight rubber; c. about 20 parts of a tackifier; d. from about 2 to about 5 parts of a butyl rubber curing resin; e. about 2.5 parts of a nonvolatile antioxidant; and f. about 10 parts of finely ground bituminous coal dust.
Claim 4
Dependent Claim
164 words
A pneumatic tire having a sealant functioning amount of a cured sealant position contiguous to the inner surface of the inner liner of said tire, said sealant being a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant components about 80 parts of a liquid low molecular weight diol, about 0.8 part of an antioxidant, about 5.65 parts of a polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and, about 2 parts of a polyurethane catalyst blended with a sealant optimizing amount of a masterbatch having as its essential components: a. about 345 parts of a rubber process oil; b. about 115 parts of a low molecular weight rubber; c. about 20 parts of a tackifier; d. from about 2 to about 5 parts of a butyl rubber curing resin; e. about 2.5 parts of a nonvolatile antioxidant; and f. about 10 parts of finely ground bituminous coal dust.
Claim 5
Dependent Claim
189 words
A sealant composition for pneumatic tires comprising a blend of; (A) a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant functioning components from about 60 to about 100 parts of a liquid low molecular weight hydroxy-terminated polybutadiene diol, from about 0.5 to about 5 parts of an non-volatile antioxidant, from about 4 to about 7 parts of an polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and from about 0.5 to about 2.5 parts of a polyurethane catalyst; and (B) a sealant amount of a masterbatch having as its essential components: a. from about 100 to about 600 parts of a rubber process oil; b. from about 25 to about 200 parts of a low molecular weight rubber; c. from about 5 to about 50 parts of a tackifier; d. from about 1 to about 15 parts of a butyl rubber curing resin; e. from about 0.5 to about 5.0 parts of a non-volatile antioxidant; and f. from about 5 to about 50 parts of carbon black bituminous coal dust and mixtures thereof.
Claim 6
Dependent Claim
189 words
A sealant composition for pneumatic tires comprising a blend of; (A) a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant functioning components from about 60 to about 100 parts of a liquid low molecular weight hydroxy-terminated polybutadiene diol, from about 0.5 to about 5 parts of an non-volatile antioxidant, from about 4 to about 7 parts of an polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and from about 0.5 to about 2.5 parts of a polyurethane catalyst; and (B) a sealant amount of a masterbatch having as its essential components: a. from about 100 to about 600 parts of a rubber process oil; b. from about 25 to about 200 parts of a low molecular weight rubber; c. from about 5 to about 50 parts of a tackifier; d. from about 1 to about 15 parts of a butyl rubber curing resin; e. from about 0.5 to about 5.0 parts of a non-volatile antioxidant; and f. from about 5 to about 50 parts of carbon black bituminous coal dust and mixtures thereof.
Claim 7
Dependent Claim
15 words
The sealant composition of claim 3 wherein component f. is finely ground, bituminous coal dust.
Claim 8
Dependent Claim
22 words
The sealant composition of claim 3 wherein the polybutadiene diol has a molecular weight within the range of 400 to about 5000.
Claim 9
Dependent Claim
17 words
The sealant composition of claim 5 wherein the isocyanate is polymeric MDI-polymethylene polyphenyl isocyanate or toluene diisocyanate.
Claim 10
Dependent Claim
150 words
A sealant composition for pneumatic tires comprising a blend of; (A) a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant components about 80 parts of a liquid low molecular weight diol, about 0.8 parts of a non-volatile antioxidant, about 5.65 parts of a polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and about 2 parts of a polyurethane catalyst; and (B) a sealant amount of a masterbatch having as its essential components: a. about 345 parts of a rubber process oil; b. about 115 parts of a low molecular weight rubber; c. about 20 parts of a tackifier; d. from about 2 to about 5 parts of a butyl rubber curing resin; e. about 2.5 parts of a nonvolatile antioxidant; and f. about 10 parts of carbon black bituminous coal dust and mixtures thereof.
Claim 11
Dependent Claim
150 words
A sealant composition for pneumatic tires comprising a blend of; (A) a curable, storage-stable and solventless one-shot component sealant for pneumatic tires having as its essential sealant components about 80 parts of a liquid low molecular weight diol, about 0.8 parts of a non-volatile antioxidant, about 5.65 parts of a polymeric isocyanate, the ratio of NCO/OH being within the range of from about 0.65 to about 1.0, and about 2 parts of a polyurethane catalyst; and (B) a sealant amount of a masterbatch having as its essential components: a. about 345 parts of a rubber process oil; b. about 115 parts of a low molecular weight rubber; c. about 20 parts of a tackifier; d. from about 2 to about 5 parts of a butyl rubber curing resin; e. about 2.5 parts of a nonvolatile antioxidant; and f. about 10 parts of carbon black bituminous coal dust and mixtures thereof.
Claim 12
Dependent Claim
15 words
The sealant composition of claim 7 wherein component f. is finely ground, bituminous coal dust.
Claim 13
Dependent Claim
22 words
The sealant composition of claim 7 wherein the polybutadiene diol has a molecular weight within the range of 400 to about 5000.
Claim 14
Dependent Claim
17 words
The sealant composition of claim 9 wherein the isocyanate is polymeric MDI-polymethylene polyphenyl isocyanate or toluene diisocyanate.
References Cited (Backward Citations)
US3714110A
Cited
US3427366A
Cited
US4163467A
Cited
US4161202A
Cited
US3935893A
Cited
US3981342A
Cited
GB1540638A
Cited
US4109695A
Cited
US4152309A
Cited
US4109696A
Cited
US4032500A
Cited
ZA765304B
Cited
US4116895A
Cited
US4102567A
Cited
ZA777707B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |