Patent US1810653A successfully refreshed from Google Patents.
US4124546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green strength of elastomers
Assignee: Goodyear Tire and Rubber Co
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Filing: 1976-06-03
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Granted: 1978-11-07
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Expires: 1996-06-03
Abstract
Abstract Improved green strength of elastomers made from monomers selected from the class consisting of at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 14 carbon atoms along with a diene having from 4 to 6 carbon atoms, and combinations thereof, is achieved by adding an amount of a polydimethylbutadiene compound to form a blend having a glass transition temperature of from about 0 DEG C to about -100 DEG C. The polydimethylbutadiene compound may be merely the homopolymer of dimetylbutadiene, the copolymer, the terpolymer or the tetrapolymer of dimethylbutadiene in various combinations with monomers such as butadiene, isoprene, piperylene, acrylonitrile, vinylidene chloride, vinyl pyridine, methacrylic acid and vinyl substituted aromatic compounds.
Inventors
- 👤 Diego C. Rubio, Jr.
- 👤 Richard G. Bauer
- 👤 Richard M. Scriver, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:23
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/045; C08L; C08L21/00
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
211 words
A process for improving the green strength of blends having good green strength of elastomers, comprising: providing an amount of a dimethylbutadiene compound, providing an amount of an elastomer, producing a physical and an uncured blend by mixing said dimethylbutadiene compound and said elastomer, said elastomer selected from the class consisting of natural rubber and synthetic elastomers, said synthetic elastomers made from monomers selected from the class consisting of at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 15 carbon atoms and a diene having from 4 to 10 carbon atoms; and combinations thereof, said blend having a glass transition temperature of from about 0° C. to about -100° C., the amount of said dimethylbutadiene compound ranging from about 5 parts to about 80 parts based upon 100 parts of said blend, said dimethylbutadiene compounds being an elastomer selected from the class consisting of polydimethylbutadiene, copolymers of dimethylbutadiene, terpolymers of dimethylbutadiene, and tetrapolymers of dimethylbutadiene, said polydimethylbutadiene made from monomers of dimethylbutadiene, said copolymers, said terpolymers and said tetrapolymers of dimethylbutadiene made from monomers selected from the class consisting of dienes having from 4 to 12 carbon atoms, and vinyl substituted aromatic hydrocarbons having from 8 to 12 carbon atoms, and combinations thereof.
Claim 2
Dependent Claim
211 words
A process for improving the green strength of blends having good green strength of elastomers, comprising: providing an amount of a dimethylbutadiene compound, providing an amount of an elastomer, producing a physical and an uncured blend by mixing said dimethylbutadiene compound and said elastomer, said elastomer selected from the class consisting of natural rubber and synthetic elastomers, said synthetic elastomers made from monomers selected from the class consisting of at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 15 carbon atoms and a diene having from 4 to 10 carbon atoms; and combinations thereof, said blend having a glass transition temperature of from about 0° C. to about -100° C., the amount of said dimethylbutadiene compound ranging from about 5 parts to about 80 parts based upon 100 parts of said blend, said dimethylbutadiene compounds being an elastomer selected from the class consisting of polydimethylbutadiene, copolymers of dimethylbutadiene, terpolymers of dimethylbutadiene, and tetrapolymers of dimethylbutadiene, said polydimethylbutadiene made from monomers of dimethylbutadiene, said copolymers, said terpolymers and said tetrapolymers of dimethylbutadiene made from monomers selected from the class consisting of dienes having from 4 to 12 carbon atoms, and vinyl substituted aromatic hydrocarbons having from 8 to 12 carbon atoms, and combinations thereof.
Claim 3
Dependent Claim
18 words
A process according to claim 1 including adding compounding agents and mixing said compounding agents with said blend.
Claim 4
Dependent Claim
33 words
A process according to claim 1 wherein said copolymers of dimethylbutadiene are made from monomers of dimethylbutadiene and monomers selected from the class consisting of dienes having from 4 to 12 carbon atoms.
Claim 5
Dependent Claim
47 words
A process according to claim 3, wherein said terpolymers and tetrapolymers of dimethylbutadiene are made from monomers of dimethylbutadiene, diene monomers having from 4 to 12 carbon atoms, and monomers selected from the class consisting of vinyl substituted aromatic hydrocarbons having from 8 to 12 carbon atoms.
Claim 6
Dependent Claim
18 words
A process according to claim 4, including adding compounding agents and mixing said compounding agents with said blend.
Claim 7
Dependent Claim
78 words
A process according to claim 4, wherein said diene monomers utilized in making a copolymer, a terpolymer, or a tetrapolymer of polydimethylbutadiene are selected from the class consisting of butadiene, isoprene and piperylene, said monomers forming said elastomers are selected from the class consisting of conjugated dienes having from 4 to 6 carbon atoms, vinyl substituted aromatic compounds having from 8 to 12 carbon atoms and conjugated dienes having from 4 to 6 carbon atoms, and combinations thereof.
Claim 8
Dependent Claim
27 words
A process according to claim 6, wherein said vinyl substituted aromatic hydrocarbon monomers of said dimethylbutadiene compound are selected from the class consisting of styrene and alpha-methylstyrene.
Claim 9
Dependent Claim
18 words
A process according to claim 7, including adding compounding agents and mixing said compounding agents with said blend.
Claim 10
Dependent Claim
64 words
A process according to claim 7, wherein said dimethylbutadiene compounds are selected from the class consisting of polydimethylbutadiene, a copolymer of dimethylbutadiene and butadiene, a copolymer of dimethylbutadiene and isoprene, a copolymer of dimethylbutadiene and piperylene, a terpolymer of dimethylbutadiene, butadiene and styrene, and wherein said elastomer is selected from the class consisting of natural rubber synthetic cis-1,4-polyisoprene, polybutadiene and a copolymer of styrenebutadiene.
Claim 11
Dependent Claim
23 words
A process according to claim 1, wherein the glass transition temperature of said blend ranges from about -20° C. to about -80° C.
Claim 12
Dependent Claim
52 words
A process according to claim 10, wherein said elastomer is made from monomers selected from the class consisting of conjugated dienes having from 4 to 6 carbon atoms, vinyl substituted aromatic compounds having from 8 to 12 carbon atoms and conjugated dienes having from 4 to 6 carbon atoms, and combinations thereof.
Claim 13
Dependent Claim
33 words
A process according to claim 10, wherein said copolymer of dimethylbutadiene is made from monomers of dimethylbutadiene and monomers selected from the class consisting of dienes having from 4 to 12 carbon atoms.
Claim 14
Dependent Claim
48 words
A process according to claim 12, wherein said terpolymers and said tetrapolymers of dimethylbutadiene are made from monomers of dimethylbutadiene, diene monomers having from 4 to 12 carbon atoms, and monomers selected from the class consisting of vinyl substituted aromatic hydrocarbons having from 8 to 12 carbon atoms.
Claim 15
Dependent Claim
18 words
A process according to claim 13, including adding compounding agents and mixing said compounding agents with said blend.
Claim 16
Dependent Claim
20 words
A process according to claim 13, wherein said vinyl substituted aromatic hydrocarbon monomers have from 8 to 10 carbon atoms.
Claim 17
Dependent Claim
78 words
A process according to claim 13, wherein said diene monomers utilized in making said copolymer, said terpolymer and said tetrapolymers of polydimethylbutadiene are selected from the class consisting of butadiene, isoprene and piperylene, said monomers forming said elastomers are selected from the class consisting of conjugated dienes having from 4 to 6 carbon atoms, vinyl substituted aromatic compounds having from 8 to 12 carbon atoms and conjugated dienes having from 4 to 6 carbon atoms, and combinations thereof.
Claim 18
Dependent Claim
36 words
A process according to claim 16, wherein said vinyl substituted aromatic hydrocarbon monomers forming said elastomers as well as said copolymers, terpolymers, and tetrapolymers of polydimethylbutadiene are selected from the class consisting of styrene and alpha-methylstyrene.
Claim 19
Dependent Claim
27 words
A process according to claim 15, wherein said elastomer is selected from the class consisting of natural rubber or synthetic cis-1,4-polyisoprene, polybutadiene and a copolymer of styrene-butadiene.
Claim 20
Dependent Claim
41 words
A process according to claim 16, wherein the amount of said dimethylbutadiene homopolymer, said dimethylbutadiene copolymers, said dimethylbutadiene terpolymers and said dimethylbutadiene tetrapolymers is from about 20 to about 60 percent by weight based upon the total weight of said blend.
Claim 21
Dependent Claim
43 words
A process according to claim 19, wherein said dimethylbutadiene compound is selected from the class consisting of dimethylbutadiene, a copolymer of dimethylbutadiene and butadiene, a copolymer of dimethylbutadiene and isoprene, a copolymer of dimethylbutadiene and piperylene, a terpolymer of dimethylbutadiene, butadiene and styrene.
Claim 22
Dependent Claim
18 words
A process according to claim 20, including adding compounding agents and mixing said compounding agents with said blend.
Claim 23
Dependent Claim
38 words
A process according to claim 20, wherein said dimethylbutadiene compound is selected from the class consisting of polydimethylbutadiene, a copolymer of dimethylbutadiene and butadiene, a copolymer of dimethylbutadiene and isoprene and, a terpolymer of dimethylbutadiene, butadiene and styrene.
Claim 24
Dependent Claim
25 words
A process according to claim 22, wherein said butadiene compound is selected from the class consisting of polydimethylbutadiene, and a copolymer of dimethylbutadiene and butadiene,
Claim 25
Dependent Claim
30 words
A process according to claim 23, wherein the amount of elastomer is approximately 70 percent by weight and the amount of said dimethylbutadiene compound is approximately 30 percent by weight.
Claim 26
Dependent Claim
191 words
A composition of elastomer blends having improved green strength, comprising: a physical and uncured blend of a dimethylbutadiene compound and an elastomer, the amount of said dimethylbutadiene compound ranging from about 5 parts to about 80 parts per 100 parts of said blend, said elastomer selected from the class consisting of natural rubber and synthetic elastomers, said synthetic elastomers made from monomers selected from the class consisting of at least one diene having from 4 to 10 carbon atoms, a diene having from 4 to 10 carbon atoms and an olefin having from 2 to 14 carbon atoms, and combinations thereof to form a blend having a glass transition temperature of from about 0° C. to about -100° C., said dimethylbutadiene compound being an elastomer selected from the class consisting of polydimethylbutadiene, copolymers of dimethylbutadiene, terpolymers of dimethylbutadiene, and tetrapolymers of dimethylbutadiene, said copolymers of dimethylbutadiene, said terpolymers of dimethylbutadiene and said tetrapolymers of dimethylbutadiene made from monomers of dimethylbutadiene and monomes selected from the class consisting of dienes having from 4 to 12 carbon atoms, vinyl substituted aromatic hydrocarbon monomers having from 8 to 12 carbon atoms, and combinations thereof.
Claim 27
Dependent Claim
191 words
A composition of elastomer blends having improved green strength, comprising: a physical and uncured blend of a dimethylbutadiene compound and an elastomer, the amount of said dimethylbutadiene compound ranging from about 5 parts to about 80 parts per 100 parts of said blend, said elastomer selected from the class consisting of natural rubber and synthetic elastomers, said synthetic elastomers made from monomers selected from the class consisting of at least one diene having from 4 to 10 carbon atoms, a diene having from 4 to 10 carbon atoms and an olefin having from 2 to 14 carbon atoms, and combinations thereof to form a blend having a glass transition temperature of from about 0° C. to about -100° C., said dimethylbutadiene compound being an elastomer selected from the class consisting of polydimethylbutadiene, copolymers of dimethylbutadiene, terpolymers of dimethylbutadiene, and tetrapolymers of dimethylbutadiene, said copolymers of dimethylbutadiene, said terpolymers of dimethylbutadiene and said tetrapolymers of dimethylbutadiene made from monomers of dimethylbutadiene and monomes selected from the class consisting of dienes having from 4 to 12 carbon atoms, vinyl substituted aromatic hydrocarbon monomers having from 8 to 12 carbon atoms, and combinations thereof.
Claim 28
Dependent Claim
18 words
A process according to claim 25, including adding compounding agents and mixing said compounding agents with said blend.
Claim 29
Dependent Claim
52 words
A composition according to claim 25, wherein said monomers forming said elastomer is selected from the class consisting of conjugated dienes having from 4 to 6 carbon atoms, vinyl substituted aromatic compounds having from 8 to 12 carbon atoms and conjugated dienes having from 4 to 6 carbon atoms, and combinations thereof.
Claim 30
Dependent Claim
43 words
A composition according to claim 27, wherein said dimethylbutadiene compounds are selected from the class consisting of polydimethylbutadiene, a copolymer of dimethylbutadiene and butadiene, a copolymer of dimethylbutadiene and isoprene, a copolymer of dimethylbutadiene and, and a terpolymer of dimethylbutadiene, butadiene and styrene.
Claim 31
Dependent Claim
18 words
A composition according to claim 28, including adding compounding agents and mixing said compounding agents with said blend.
Claim 32
Dependent Claim
31 words
A composition according to claim 28, wherein the amount of said elastomer is about 70 percent by weight and the amount of said dimethylbutadiene compound is about 30 percent by weight.
Claim 33
Dependent Claim
18 words
A composition according to claim 30, including adding compounding agents and mixing said compounding agents with said blend.
Claim 34
Dependent Claim
33 words
A composition according to claim 27, wherein said copolymer of dimethylbutadiene is made from monomers of dimethylbutadiene and monomers selected from the class consisting of dienes having from 4 to 12 carbon atoms.
Claim 35
Dependent Claim
48 words
A composition according to claim 27, wherein said terpolymers and said tetrapolymers of dimethylbutadiene are made from monomers of dimethylbutadiene, diene monomers having from 4 to 12 carbon atoms, and monomers selected from the class consisting of vinyl substituted aromatic hydrocarbons having from 8 to 12 carbon atoms.
Claim 36
Dependent Claim
27 words
A composition according to claim 27, wherein said vinyl substituted aromatic hydrocarbon monomers of said dimethylbutadiene compound are selected from the class consisting of styrene and alpha-methylstyrene.
Claim 37
Dependent Claim
25 words
A composition according to claim 34, wherein said diene monomers forming said dimethylbutadiene compound are selected from the class consisting of butadiene isoprene, and piperylene.
Claim 38
Dependent Claim
26 words
A composition according to claim 35, wherein said elastomers are selected from the class consisting of natural rubber, synthetic cis-1,4-polyisoprene, polybutadiene, and a copolymer of styrene-butadiene.
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) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |